94-36-0

94-36-0 - Names and Identifiers

Name	benzoyl Peroxide
Synonyms	BPO Perkadox L benzoyl Peroxide Dibenzoyl peroxide DiluteBenzoyl Peroxide Benzoyl peroxide paste Luperox A98, Benzoyl peroxide Benzoyl peroxide Manufacturer
CAS	94-36-0
EINECS	202-327-6
InChI	InChI=1/C14H10O4/c15-13(11-7-3-1-4-8-11)17-18-14(16)12-9-5-2-6-10-12/h1-10H
InChIKey	OMPJBNCRMGITSC-UHFFFAOYSA-N

94-36-0 - Physico-chemical Properties

Molecular Formula	C14H10O4
Molar Mass	242.23
Density	1.16g/mLat 25°C(lit.)
Melting Point	105°C(lit.)
Boling Point	176°F
Flash Point	>230°F
Water Solubility	Insoluble
Solubility	0.35mg/l
Vapor Presure	0.009Pa at 25℃
Appearance	powder
Color	White
Odor	odorless
Exposure Limit	TLV-TWA 5 mg/m3; IDLH 7000 mg/m3.
Merck	14,1116
BRN	984320
Storage Condition	2-8°C
Stability	Strong oxidizer. Highly flammable. Do not grind or subject to shock or friction. Incompatible with reducing agents, acids, bases, alcohols, metals, organic materials.
Refractive Index	1.5430 (estimate)
Physical and Chemical Properties	White crystalline powder with slight odor. Melting point 103~106 ℃ (decomposition),t1/2=2.4h(85 ℃), 4.3h(80 ℃), 8.4h(75 ℃), decomposition temperature [0.2m benzene] 73 deg C. Soluble in ether, acetone, chloroform, benzene. Slightly soluble in ethanol, vegetable oil, insoluble in water. Dry product is extremely unstable, friction, impact, heat or reducing agent can cause explosion. Flammable, non-toxic. tert-butyl benzoate peroxide
Use	Benzoyl peroxide is the most widely used initiator in the adhesive industry. It is used for the polymerization of acrylate and vinyl acetate, Chloroprene Rubber, natural rubber, SBS and methyl methacrylate. Initiator for curing of Unsaturated Polyester Resin, organic glass adhesive, etc. It can also be used as a curing agent and a crosslinking agent for silicone rubber and fluorine rubber. It can also be used as a bleaching agent and an oxidizing agent.

94-36-0 - Risk and Safety

Risk Codes	R8 - Contact with combustible material may cause fire R36/37/38 - Irritating to eyes, respiratory system and skin. R43 - May cause sensitization by skin contact R36 - Irritating to the eyes R2 - Risk of explosion by shock, friction, fire or other sources of ignition R7 - May cause fire R1 - Explosive when dry R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R21/22 - Harmful in contact with skin and if swallowed. R62 - Possible risk of impaired fertility R50 - Very Toxic to aquatic organisms R61 - May cause harm to the unborn child R3 - Extreme risk of explosion by shock, friction, fire or other sources of ignition R39/23/24/25 - R40 - Limited evidence of a carcinogenic effect
Safety Description	S53 - Avoid exposure - obtain special instructions before use. S17 - Keep away from combustible material. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S3/7 - S14A - S14 - Keep away from ... (a list of incompatible materials will follow). S47 - Keep at temperature not exceeding... S35 - This material and its container must be disposed of in a safe way. S7 - Keep container tightly closed. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S37/39 - Wear suitable gloves and eye/face protection S24 - Avoid contact with skin.
UN IDs	UN 3108 5.2
WGK Germany	2
RTECS	DM8575000
TSCA	Yes
HS Code	29163200
Hazard Class	5.2
Packing Group	II
Toxicity	LD50 orally in Rabbit: 7710 mg/kg

94-36-0 - Nature

Open Data Verified Data

The content of

was 98% or more as white crystals, and 50% as a paste. Soluble in benzene, chloroform, ether, acetone, carbon disulfide, water-soluble and methanol. The theoretical active oxygen content was 6. 62%. The activation energy was 125 kJ] mol. The half-life was 10h at 72~73. Flammable in the dry state, when heat, friction, vibration or impurity pollution can cause explosive decomposition. Explosion can occur when heated sharply. Contact with strong acids, strong bases, sulfides, reducing agents, poly-and co-catalysts and promoters such as dimethylaniline, amines, amines or metal naphthenates can react vigorously.

Last Update：2024-01-02 23:10:35

94-36-0 - Hair-making

Open Data Verified Data

The 30% caustic soda solution was cooled to 10 ° C. With stirring, and 30% hydrogen peroxide was added dropwise. After the dropwise addition, the temperature of the material is lowered to about 0 ° C., benzoyl chloride is added dropwise, and then the mixture is left to stand and layered, and benzoyl peroxide in the lower layer is separated and dried at low temperature, the water content in the finished product was maintained at 25% to 30% for storage.

Last Update：2022-01-01 09:31:51

94-36-0 - Standard

Authoritative Data Verified Data

This product is aqueous benzoyl peroxide. The content of C14H10O4 shall be 70.0% to 77.0%, and the water content shall not be less than 20.0%.

Last Update：2024-01-02 23:10:35

94-36-0 - Trait

Authoritative Data Verified Data

This product is white crystalline powder; Special odor.
This product is soluble in acetone or chloroform, slightly soluble in methanol or ethanol, and slightly soluble in water.

Last Update：2022-01-01 11:44:40

94-36-0 - Use

Open Data Verified Data

powder type (purity 98.0%) products are mainly used as polymerization initiators for acrylic resins, vinyl acetate resins, Methacrylate resins, and the like. Paste type (this product so% and thickener 50%) products used as polyester resin molding curing catalyst. Liquid type (75% of this product and 25% of water) products are used as Polymerization Catalysts for the preparation of polystyrene resin. It can also be used as a crosslinking agent for unsaturated resins, silicone rubber, fluorine rubber, and a bleaching agent and an oxidizing agent.

Last Update：2022-01-01 09:31:52

94-36-0 - Differential diagnosis

Authoritative Data Verified Data

take this product, add anhydrous ethanol to dissolve and dilute to make a solution containing about 5ug per 1ml, and measure by UV-Vis spectrophotometry (General rule 0401), there is an absorption maximum at a wavelength of 235Nm.
The infrared absorption spectrum of this product should be consistent with that of the control (Spectrum set 602).

Last Update：2022-01-01 11:44:41

94-36-0 - Safety

Open Data Verified Data

rat oral LD50:7710mg/kg. It is irritating to the upper respiratory tract. It has a strong, stimulating and sensitizing effect on the skin. Into the eye can cause damage. Flammable, explosive, with strong irritation, with sensitization. Full protection should be provided. If you accidentally inhale or contact the skin, apply a large amount of flowing water or saline to thoroughly rinse and see a doctor. It is strictly prohibited to mix with acids, flammable substances, organic substances, reducing agents, spontaneous combustion substances and wet flammable substances.

Last Update：2022-01-01 10:06:25

94-36-0 - Exam

Authoritative Data Verified Data

chloride

take 0.5g of this product, add 15ml of acetone to dissolve it, slowly add 50ml of 0.05mol/L nitric acid solution while shaking, place it for 10 minutes, then filter it, and place the filtrate in a measuring flask, wash the filter residue with 0.05mol/L nitric acid solution for 2 times, 10ml each time, dilute with 0.05mol/L nitric acid solution to the mark, shake, take 10ml, diluted with water to 30ml, according to the law to check (General rule 0801), compared with the standard sodium chloride solution made of 0.07% of the control solution, not more concentrated ().

Related substances

take an appropriate amount of this product, accurately weigh, add acetonitrile to dissolve and quantitatively dilute to prepare a solution containing about 2mg of benzoyl peroxide per 1ml, as a test solution; Take an appropriate amount of precision, the solution containing 2ug per 1ml was prepared by quantitative dilution with acetonitrile as the control solution; The appropriate amount of benzoic acid reference substance, benzaldehyde reference substance and ethyl benzoate reference substance were separately taken and accurately weighed, the mobile phase was added to dissolve and quantitatively dilute to prepare a mixed solution containing 0.15mg, 0.025mg and 0.025mg respectively per 1ml, and the appropriate amount was accurately measured and quantitatively diluted with acetonitrile to prepare 30ug and 0.025mg respectively per 1ml, 5ug and 5ug solution, as a control solution. According to the test of high performance liquid chromatography (General rule 0512), silica gel bonded with eighteen alkyl silane was used as filler; Acetonitrile-water-glacial acetic acid (500:500:1) was used as mobile phase; The detection wavelength was 235nm. Take 20ul of the reference solution, inject the human liquid chromatograph, record the chromatogram, the separation degree of the benzaldehyde peak and the benzoic acid peak should be greater than 6.0; Take 20ul of the sample solution, the control solution and the reference solution, human liquid chromatograph was injected respectively, and the chromatogram was recorded to 2 times of the retention time of the main component peak. If there are chromatographic peaks in the chromatogram of the test solution that are consistent with the peak retention time of benzoic acid, benzaldehyde and ethyl benzoate, the peak area shall be calculated according to the external standard method, and shall not pass 1. 5%,0. 25%,0. 25%, the sum of the peak areas of other impurities shall not be greater than 10 times (1.0%) of the main peak area of the control solution, and the total amount of impurities shall not exceed 2.0%. The chromatogram of the test solution is 0.2 times smaller than the main peak area of the control solution.

Last Update：2022-01-01 11:44:42

94-36-0 - Content determination

Authoritative Data Verified Data

perchlorobenzoyl anhydrous

take 0.25g of this product, accurately weigh, put it in a 250ml iodine bottle, add 30ml acetone, shake to dissolve, add 5ml potassium iodide test solution, pack, shake, set in the dark for 15 minutes, with sodium thiosulfate titration solution (0.1 mol/L) was titrated to colourless, and the results of the titration were corrected with a blank test. Each 1 ml of sodium thiosulfate titration solution (0.1 mol/L) corresponds to 12.11 mg of C14H10O4.

Water

take 0.12g of this product, precision weighing, add 5ml of dimethylformamide to dissolve, add 20ml of anhydrous methanol and 3ml of N,N-dimethylformamide solution of 10% potassium iodide, stir for 5 minutes, determined according to the moisture determination method (General rule 0832 first method 1). The measured result was added with the product of the content of anhydrous benzoyl peroxide and 0.0744 to obtain the water content of the test article.

Last Update：2022-01-01 11:44:42

94-36-0 - Category

Authoritative Data Verified Data

Disinfection antiseptic.

Last Update：2022-01-01 11:44:43

94-36-0 - Storage

Authoritative Data Verified Data

shading, sealed storage, storage must be preserved in a certain amount of water.

Last Update：2022-01-01 11:44:43

94-36-0 - Benzoyl peroxide cream

Authoritative Data Verified Data

This product contains benzoyl peroxide (C14H1004) should be labeled the amount of 90.0% ~ 110.0%.

trait

This product is of white milk origin.

identification

take an appropriate amount of this product (about equivalent to benzoyl peroxide 100mg), add acetone 10ml, shake, disperse evenly, filter, filtrate as a test solution. Another benzoyl peroxide control was taken, dissolved with acetone and diluted to prepare a solution containing about 10 mg per 1 ml as a control solution. According to the thin layer chromatography (General 0502) test, absorb the above two solutions each 5 u1, respectively, on the same silica gel GF254 thin layer plate, with toluene-two gas methane-glacial acetic acid (50:2:1) for the development of the agent, expand, dry, set the UV light (365nm) under the view. The position and color of the main spot displayed by the test solution should be the same as that of the reference solution.

examination

the pH value should be 2.8 to 7.0 (General 0631).
others should be in accordance with the relevant provisions under the term milk origin (General rule 0109).

Content determination

take an appropriate amount of this product (about 250mg of benzoyl peroxide), put it in a 100ml iodine bottle, add 30ml of acetone, shake to disperse evenly, add 5ml of potassium iodide test solution, pack, after shaking for 1 min, with sodium thiosulfate titration solution (0.lmol/L) titration to colorless. Each 1 ml of sodium thiosulfate titration solution (0.1 mol/ L corresponds to 12.11 mg of C14H1004.

specification

(1)5% (2)10%

storage

shade, seal, and store in a cool place.

Last Update：2022-01-01 11:44:44

94-36-0 - Benzoyl Peroxide Gel

Authoritative Data Verified Data

This product contains benzoyl peroxide (C14H1004) should be labeled the amount of 90.0% ~ 110.0%.

trait

This product is a white milky thick liquid.

identification

take an appropriate amount of this product (about 50mg of benzoyl peroxide), add 5ml of acetone, dissolve benzoyl peroxide with a glass rod, add 2ml of potassium iodide test solution, red-brown solution, add 5ml of sodium thiosulfate test solution, red-brown color should disappear.
take an appropriate amount of this product (about equivalent to benzoyl peroxide lOOmg), add 10ml of acetone, squeeze with a glass rod to dissolve benzoyl peroxide, filter, and use the filtrate as a test solution, acetone was added to dissolve and dilute to prepare a solution containing about 10mg per 1ml as a control solution. According to the thin layer chromatography (General 0502) test, absorb the above two solutions each 5 u1, respectively, on the same silica gel GF254 thin layer plate, with toluene-two gas methane-glacial acetic acid (50:2:1) for the development of the agent, expand, dry, set the UV light (254mn) under the inspection. The position and color of the main spot displayed by the test solution should be the same as that of the reference solution.

examination

the pH value should be 4.5 to 7.0 (General 0631).
Related substances precision weighing appropriate amount of this product (about equivalent to benzoyl peroxide lOOmg), put it in a 50ml measuring flask, add appropriate amount of acetonitrile-water (70:30), ultrasonic to dissolve benzoyl peroxide, cool, dilute to the scale with acetonitrile-water (70:30), shake, filter, and take the continued filtrate as the test solution; Take appropriate amount with precision, A solution containing 40ug of benzoyl peroxide in 1ml was prepared by quantitative dilution with acetonitrile-water (70:30) and used as a control solution. In addition, appropriate amounts of benzoic acid control, benzaldehyde control and ethyl benzoate control were taken, precision weighing, adding acetonitrile-water (70:30) to dissolve and quantitatively dilute to make a mixed solution containing about 200ug, 20ug and 20ug per 1ml, respectively, as a reference solution; An appropriate amount of ethylparaben was additionally taken, dissolved and diluted with ethanol to prepare a solution containing 15ug per 1ml as a blank solution. According to the method of benzoyl peroxide related substances, the sample solution, the control solution, the reference solution and the blank solution were accurately measured, and the human liquid chromatograph was injected respectively, the chromatogram was recorded to 2 times of the retention time of the main component peak. If there are chromatographic peaks in the chromatogram of the test solution that are consistent with the peak retention time of benzoic acid, benzaldehyde and ethyl benzoate, the peak area shall be calculated according to the external standard method, and 10%, 1.0% and 1.0% of the labeled amount shall not be allowed respectively, the Peak area of other single impurities shall not be greater than 0.5 times (1.0%) of the main peak area of the control solution, and the sum of the peak areas of other impurities shall not be greater than the main peak area of the control solution (2.0%). The chromatographic peaks of the test solution chromatogram which are 0.2 times smaller than the main peak area of the control solution and the chromatographic peaks which are consistent with the retention of ethylparaben are ignored.
others should comply with the relevant provisions under the gel (General rule Ol14).

Content determination

take an appropriate amount of this product (about 200mg of benzoyl peroxide), put it in a 100ml iodine bottle for a moment, and lay the sample on the bottom of the iodine bottle, add acetone 30ml and squeeze with glass rod to dissolve benzoyl peroxide completely, rinse the glass rod with a small amount of propylene, wash with human solution, add potassium iodide solution 5ml, plug, shake, and place in the dark for 10 minutes, with sodium thiosulfate titration solution (0.lmol/L) titration to colorless, with Force shaking for 30 seconds, placed for 2 minutes, if still colorless, that is the end point. Each 1 ml of sodium thiosulfate titration solution (0.1 mol/L) corresponds to 12.11 mg of Cl4H10O4.

specification

(l)10g:0.5g (2)15g:0.75g (3)18g:0.9g

storage

sealed and stored in a cool place.

Last Update：2022-01-01 11:44:45

94-36-0 - Reference Information

, there should be white insoluble residue at the bottom. Add 2ml of 4, 4-diaminodiphenylamine saturated with ethanol, and the liquid and insoluble matter should be blue-green in color.
take a sample of 500mg, add 50ml of 0.5mol/L potassium hydroxide ethanol solution, gradually heat to boiling, and continue boiling for 15min. After cooling, the solution was diluted to 0.5 ml with water and rendered strongly acidic with mol/L hydrochloric acid. After extraction with ether, the extract was dried over anhydrous sodium sulfate and evaporated to dryness on a steam bath. The melting range of the obtained benzoic acid was 121-123 °c. The melting range was determined by a conventional method.

LogP	3.2 at 20℃
(IARC) carcinogen classification	3 (Vol. 36, Sup 7, 71) 1999
NIST chemical information	information provided by: webbook.nist.gov (external link)
EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
strong oxidant	benzoyl peroxide is a strong oxidant that can be used to bleach organic matter, such as flour, vegetable oils, etc, however, it has strong destructive effect on β-carotene, vitamin A, vitamin E and vitamin B1 in flour, and the maximum dosage is 0.25~0.3g/kg flour; it is easily decomposed into free radicals when heated to 70~90 ℃, and is widely used as an initiator for polymerization and photochemical reaction of vinyl monomers (vinyl chloride, acrylonitrile, etc.). Excessive dosage will cause polymer discoloration and yellowing, at the same time, it has a reducing effect on some pigments. Benzoyl peroxide heated to about 100 ° C, can rapidly decompose, in a sealed container can cause an explosion, should be treated as dangerous goods. Benzoyl peroxide is sensitive to impact and friction, and the risk of explosion is very high. Contact with metallic powder, activated carbon and reducing agent should be avoided, and the safety matters on the container label must be observed. To prevent fire, explosion and other hazards, usually with calcium carbonate, calcium phosphate, calcium sulfate, magnesium carbonate, alum, starch and other 3 or more than 2 kinds of substances diluted to about 20% after use (diluted benzoyl peroxide).
benzoyl peroxide gel	benzoyl peroxide gel is an oxidizing agent for external use on skin, with concentrations of 2.5%, 5% and 10%, it may be sterilized by the slow release of the protein of the new ecological oxygen oxidizing bacteria, which has an antibacterial effect on Propionibacterium acnes and is also effective against anaerobic infections. At the same time, it has the effect of mild keratolysis, Desquamation and reducing free fatty acid in hair follicle sebaceous gland. In addition the drug in the treatment of decubitus ulcers and stasis ulcers, can stimulate epidermal hyperplasia and granulation tissue formation. Benzoyl peroxide is absorbed through the skin and metabolized to benzoic acid, which is then excreted in the urine as benzoate. [Indications and Usage]: ① topical treatment of acne vulgaris, starting with a concentration of 2.5% or 5% of the gel evenly applied to the skin, qd. 3~4 weeks after the concentration can be increased to 10%, morning and evening every day 1 times, before the drug should be lesions with soap and water wash, dry. In severe cases, it can be combined with antibiotics, tretinoin preparations or sulfur-salicylic acid preparations. ② treatment of swelling, prickly heat, etc. ③ for chronic skin ulcers such as decubitus ulcers, stasis ulcers, etc. First, apply a layer of protective ointment around the ulcer, and then apply the gauze soaked with 10% of the lotion or ointment to the surface of the ulcer. The ulcer with a larger area is separated by 8 hours, the dressing was changed once every 12 hours for the smaller ulcer. Severe ulcers may be clogged with gauze impregnated with 20% benzoyl peroxide lotion or ointment to provide good contact with the cavity wall. Excessive granulation tissue should be cauterized with a silver nitrate rod to promote Epidermal growth. [adverse reactions and precautions] Topical Benzoyl peroxide may appear allergic dermatitis and dry skin phenomenon. If there is a large amount of desquamation, erythema and edema, the drug should be discontinued immediately. Such symptoms are caused by excessive medication, can continue to use the drug after the symptoms subsided, pay attention to reduce the dose of medication. Benzoyl peroxide gel should not be used around the eye or at the mucous membrane. In case of inadvertent contact, clean with water. Contact with colored objects may lead to bleaching or discoloration. There is no data on the safety of pregnant women, lactating women and children.
Protection Measure	the production site should be ventilated, and the operation should wear protective clothing and safety goggles, to reduce skin contact and eye irritation. Wear a protective mask or mask in places where powdered or granular benzoyl peroxide may be airborne, or where liquid or pasty benzoyl peroxide may splash or spill. protective clothing shall be fire-resistant. It is not recommended to use any fabric that generates static electricity. In order to prevent the accumulation of static electricity, appropriate conductive shoes should be worn. Workers should wear gloves made of rubber, leather or other suitable materials when packing or handling pure benzoyl peroxide. When loading and unloading benzoyl peroxide and its components, it is recommended to use rubber or other appropriate materials to make aprons to enhance protection. Plastic aprons that may generate static electricity are not used. workers such as skin pollution, should be quickly washed with water, and wash with soap; Work clothes may be contaminated, should be replaced daily; Permeable work clothes if contaminated, quickly take off.
determination method	determination in air: sample collection with filter material, ether treatment, high performance liquid chromatography (HPLC) analysis; Colorimetric analysis can also be used.
storage	dry goods are packed in polyethylene-lined paper bags or fiber barrels or in polyethylene-lined metal barrels. Store in a cool, well-ventilated, independent warehouse composed of non-combustible materials, and set explosion-proof ventilators (explosion-proof holes) in the direction of safety. No installation of electrical equipment or heating facilities is allowed in the room. It must be stored and used in the original packaging container, and must not be modified to avoid danger. 30% water should be added during storage to ensure safety.
transportation requirements	benzoyl peroxide is a Class I Organic oxidant. Crisis#: 22004. Containers must be marked with an "organic peroxide" mark during transport, and no passengers are allowed.
fire extinguishing measures	in case of fire, the fire shall be put out by using water at the explosion suppression site. In the event of a fire around this chemical, the container must be kept cool with water. In a large-scale fire, the fire zone must be evacuated immediately. Clean-up and rescue work after fire shall not be carried out before the peroxide is not completely cooled. In the event of a leak due to fire or use, the leak must be mixed with vermiculite moistened with water, cleaned (no metal or fiber tools are allowed to be used), placed in a plastic container and disposed of immediately.
proposed waste treatment method	Pretreatment includes decomposition with sodium hydroxide. Finally, the biodegradable sodium benzene (methyl) solution is poured into a sewer. A large amount of solution treatment needs to adjust the pH before discharge into the sewer, or after mixing with the incombustible, control incineration. The empty container of peroxide should be placed at a distance to burn off, or washed with 10% NaOH solution.
identification test
content analysis	(benzoyl peroxide content) accurately weigh about 1g(w) of the sample and move it into a 250ml triangular beaker, add 30ml of acetone to dissolve it, add 2ml of potassium iodide solution (g/L), shake the cap plug, place it in the dark for 15min, and titrate with 0.1mol/L sodium thiosulfate standard solution [c] until Brown color disappeared. A blank test was also performed. accurately weigh about 50% mg of the sample, put it in a mL vial, add 15ml of acetone to dissolve it, and add 3ml of potassium iodide solution. Immediately after shaking for 1min, titrate with 0.1mol/L sodium thiosulfate (without adding starch indicator solution), 0.1mol/L sodium thiosulfate equivalent to 12.11mg benzoyl peroxide (G14H10O4) per mL.
toxicity	ADI 0~40mg/kg, 40~75mg/k in special cases; FAO/WHO,2001). LD50 7710mg/kg (rat, oral). GRAS(FDA,§ 184.1157,2000). ADl 0~40mg/kg (based on benzoyl peroxide, can be increased to 40~70mg/kg in special cases; FAO/WHO,1994).
usage limit	GB 2760-96: flour improver, 0.06g/kg. Calcium phosphate can be used as a diluent for this product. According to the regulation of the maximum use of Japan: flour 0.3g/kg. 0.3g/kg of the amount of wheat flour in terms of benzoyl peroxide.
Application	used as monomer polymerization initiator of polyvinyl chloride, unsaturated polyester, polyacrylate, etc, can also be used as rubber vulcanizing agent used as analytical reagent, oxidant, bleach and plastic polymerization initiator used as curing agent for Unsaturated Polyester Resin benzoyl peroxide produced in Japan, in addition to the purity of 98.0% powder type, there are a variety of commercial specifications, such as paste type (50% of this product and plasticizer 50%), liquid type (75% of this product and water 25%), flour aging bleaching type (the product of 19% ~ 22% with alum, calcium phosphate, calcium sulfate, calcium carbonate, carbonic acid or flour in one or more diluted). Powder-type products are mainly used as polymerization initiation catalysts for acrylic resins, MMA resins, etc. In recent years is being promoted as a rapid adhesive used in highway engineering and other aspects, paste products used as polyester resin molding process curing catalyst. The liquid type is used as a polymerization catalyst for the preparation of polystyrene resins. This product is a strong oxidant, sensitive to impact and friction, the risk of explosion is very large, should avoid contact with metal powder, activated carbon and reducing agent. Storage must be water as a stabilizer, water content of 30%, storage temperature of 30 degrees Celsius. Zhengzhou city food additives factory on June 26, 1993 explosion occurred, 27 people were killed and 33 injured. This product is toxic, will make the skin, mucous membrane inflammation. Mice oral LD50 was 3.949mg/kg. wheat flour whitening agent; Oxidant; Bleaching agent. It is mainly used as a polymerization initiator for PVC and polyacrylonitrile, and a crosslinking agent for unsaturated polyester and acrylate. It is used as a cross-linking agent for silicone rubber and fluorine rubber in the rubber industry. Can also be used as a bleaching agent, oxidant, used in chemical production. as a flour improver, It has bactericidal effect and strong oxidation effect, and can bleach flour. China provides only for wheat flour, the maximum use of 0.06g/kg. benzoyl peroxide is the most widely used initiator in the adhesive industry. It is used for the polymerization of acrylate and vinyl acetate, and the graft polymerization of chloroprene rubber, natural rubber, SBS and methyl methacrylate. Initiator for curing of Unsaturated Polyester Resin, organic glass adhesive, etc. It can also be used as a curing agent and a crosslinking agent for silicone rubber and fluorine rubber. It can also be used as a bleaching agent and an oxidizing agent. formaldehyde and cholesterol were assayed. Characterization of aromatic amines. Preparation of embedding media for electron microscopy. Oxidant. Catalysts for the polymerization of plastics. Curing Agent, crosslinking agent. Bleach of fats, oils and waxes.
production method	Under cooling condition, 30% hydrogen peroxide is added into 30% sodium hydroxide solution to generate sodium peroxide solution; then, benzoyl chloride is added dropwise with stirring at 0~10 ℃. If the temperature is too high, it will cause decomposition of hydrogen peroxide and hydrolysis of benzoyl chloride: 1 methanol/chloroform recrystallization, drying (50~70 C) to obtain the product, the yield of more than 85%. 2NaOH → H2O2 +2H2ONa2O2 + 2C6H5COCl → c6h5coooc6h5 + 2NaCl hydrogen peroxide was reacted with 30% liquid base to generate sodium peroxide solution, which was then reacted with benzoyl chloride. The reaction is carried out at about 0 ° C., the temperature is too high, the decomposition of hydrogen peroxide is caused, and benzoyl chloride is also easy to hydrolyze to generate benzoic acid, which affects the yield. The resultant precipitated benzoyl peroxide was filtered, washed and dried to obtain a finished product. Industrial benzoyl peroxide content of up to 99% (secondary products), the melting point of 102-106 ℃ raw material consumption quota: benzoyl chloride (more than 95%) 1000kg/t, hydrogen peroxide (30%)800kg/t. If purification is desired, recrystallization may be performed using alcohols, acetone, benzene and other suitable solvents. The hydrogen peroxide reacts with 30% liquid alkali to generate sodium peroxide solution, And then reacted with benzoyl chloride. The reaction is carried out at about 0 ° C., the decomposition of hydrogen peroxide is caused by too high temperature, and benzoyl chloride is also easy to decompose to generate benzoic acid, which affects the yield. The precipitated benzoyl peroxide is filtered, polyester, and dried to obtain a finished product. Industrial benzoyl peroxide content of up to 99% (two products), the melting point of 102~106. If purification is desired, recrystallization may be performed using alcohols, acetone, benzene and other suitable solvents.
category	oxidant
toxicity grade	low toxicity
Acute toxicity	oral-rat LD50: 7710 mg/kg; Oral-mouse LD50: 5700 mg/kg
stimulation data	eyes-rabbits 500 mg/24 h mild
explosive hazard characteristics	can be mixed with reducing agent, sulfur, phosphorus, etc, impact exploitable
flammability hazard characteristics	flammable materials such as organic matter, reducing agent, sulfur, phosphorus and other flammable materials, as well as open flame, light, impact and high heat; combustion-induced smoke
storage and transportation characteristics	warehouse ventilation and low temperature drying
extinguishing agent	water mist
Occupational Standard	TWA 5 mg/m3
spontaneous combustion temperature	176 ° F.
toxic substance data	information provided by: pubchem.ncbi.nlm.nih.gov (external link)
immediate life-threatening and health concentrations	1,500 mg/m3

Last Update：2024-04-10 22:29:15

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benzoyl Peroxide

CAS: 94-36-0

Molecular Formula: C14H10O4

94-36-0 - Names and Identifiers

94-36-0 - Physico-chemical Properties

94-36-0 - Risk and Safety

94-36-0 - Nature

Open Data Verified Data

94-36-0 - Hair-making

Open Data Verified Data

94-36-0 - Standard

Authoritative Data Verified Data

94-36-0 - Trait

Authoritative Data Verified Data

94-36-0 - Use

Open Data Verified Data

94-36-0 - Differential diagnosis

Authoritative Data Verified Data

94-36-0 - Safety

Open Data Verified Data

94-36-0 - Exam

Authoritative Data Verified Data

chloride

Related substances

94-36-0 - Content determination

Authoritative Data Verified Data

perchlorobenzoyl anhydrous

Water

94-36-0 - Category

Authoritative Data Verified Data

94-36-0 - Storage

Authoritative Data Verified Data

94-36-0 - Benzoyl peroxide cream

Authoritative Data Verified Data

trait

identification

examination

Content determination

category

specification

storage

94-36-0 - Benzoyl Peroxide Gel

Authoritative Data Verified Data

trait

identification

examination

Content determination

category

specification

storage

94-36-0 - Reference Information

Supplier List

94-36-0