Pyroxylin
Collodion
CAS: 9004-70-0
Molecular Formula: C24H36N8O38
Pyroxylin - Names and Identifiers
Pyroxylin - Physico-chemical Properties
| Molecular Formula | C24H36N8O38 |
| Molar Mass | 1044.57344 |
| Density | 1.23g/mLat 25°C(lit.) |
| Melting Point | 100 °C |
| Boling Point | 83°C(lit.) |
| Flash Point | 53°F |
| Solubility | esters, ketones, ether-alcohol mixtures (collodion) and glycol ethers: soluble |
| Appearance | Viscous Liquid |
| Specific Gravity | 0.765～0.775 |
| Color | Clear colorless to light yellow |
| PH | pH(25℃):4.0～8.0 |
| Storage Condition | 0-6°C |
| Stability | Stable. Extremely flammable - presents a serious fire risk. Note the very low flash point and extremely wide explosive limits. Readily forms an explosive mixture with air. Incompatible with oxidizing |
| Refractive Index | 1.6081 (estimate) |
| Physical and Chemical Properties | Boiling point 83°C(lit.) density 1.23g/mL at 25°C(lit.) flash point 53 ° F. storage conditions 0-6°C solubility esters, ketones, ether-alcohol mixtures (collagen) and glycol ethers: soluble |
| Use | For the production of cultural and educational supplies, daily necessities, instrument signs, etcUsed for ink, leather, all kinds of Nitro paint, rubber cap, typing wax paper, etcUsed in the manufacturing of pharmaceutical industry, photographic film, photographic film and leather |
Pyroxylin - Risk and Safety
| Risk Codes | R11 - Highly Flammable R36/38 - Irritating to eyes and skin. R1 - Explosive when dry R10 - Flammable R67 - Vapors may cause drowsiness and dizziness R66 - Repeated exposure may cause skin dryness or cracking R22 - Harmful if swallowed R19 - May form explosive peroxides R12 - Extremely Flammable R36 - Irritating to the eyes R3 - Extreme risk of explosion by shock, friction, fire or other sources of ignition R61 - May cause harm to the unborn child |
| Safety Description | S23 - Do not breathe vapour. S33 - Take precautionary measures against static discharges. S29 - Do not empty into drains. S16 - Keep away from sources of ignition. S9 - Keep container in a well-ventilated place. S35 - This material and its container must be disposed of in a safe way. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S53 - Avoid exposure - obtain special instructions before use. |
| UN IDs | UN 2556 4.1/PG 2 |
| WGK Germany | 1 |
| RTECS | QW0970000 |
| FLUKA BRAND F CODES | 8 |
| HS Code | 39122011 |
| Hazard Class | 1.1D |
| Toxicity | LD50 oral in rat: > 5gm/kg |
Pyroxylin - Nature
Open Data Verified Data
nitrocellulose is a white, odorless, odorless solid. Celluloid is a thermoplastic material plasticized with 20% camphor. 80 degrees C obvious softening, 110~125 degrees Celsius can be formed and processed, higher than 165 degrees Celsius can spontaneous combustion. Transparent, soft, high mechanical strength, small water absorption. In boiling water 2min No deformation, no white spots. Stable to water and common dilute acid solution, can be diluted alkali erosion, in benzene, dichloroethylene can be partially dissolved, soluble in ethanol, acetone and ethyl acetate and other solvents.
Last Update：2024-01-02 23:10:35
Pyroxylin - Preparation Method
Open Data Verified Data
nitrocellulose nitrifies cellulose with a mixture of nitric acid and sulfuric acid, then removes acid, prewash, boil, wash, dehydrate, and then remove water with alcohol, alcohol-containing wet nitrocellulose was obtained.
Last Update：2022-01-01 11:08:31
Pyroxylin - Use
Open Data Verified Data
nitrocellulose is mainly used in the plastic industry, the manufacture of cultural and educational supplies such as table tennis, Triangle plate, pen Rod, glasses frame, toys, daily necessities in the umbrella handle, tool handle and so on. Cellulose nitrate can also be used as fibers, adhesives, coatings and raw materials, high nitrogen content (>13%) can produce explosives.
Last Update：2022-01-01 11:08:31
Pyroxylin - Safety
Open Data Verified Data
This product is non-toxic. This product is a Class A flammable dangerous goods. Packed in a wooden box with a plastic bag under the liner of the box. Each box does not exceed 160kg, or according to the requirements of the user packaging. There should be a "flammable" sign on the outside of the box. Storage should be kept in a dry, ventilated, clean warehouse, away from heat sources, to avoid direct sunlight, not with acidic articles, spontaneous combustion articles and explosive items stored together, close to the open flame is strictly prohibited. Transportation shall be conducted in accordance with the transport rules of the Department of Transportation for dangerous goods.
Last Update：2022-01-01 11:08:32
Pyroxylin - Molding Process
Open Data Verified Data
CN plus plasticizer (such as camphor), solvent (alcohol or acetone), dye (or pigment), kneading fully at 36 °c in a kneader, then filter press in the filter press at 60 ℃, the filtered material in the two-roll calender calendering, calendering the resulting sheet by pressing the block, dry, the sheet-like CN plastic was obtained by flattening or glazing. It is also possible to place the calendered sheet into a tube by means of an extrusion mechanism.
Last Update：2022-01-01 11:08:33
Pyroxylin - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | used for making cultural and educational supplies, daily necessities, instrument signs, etc used for ink, leather, all kinds of Nitro paint, rubber cap, typing wax paper, etc. used for making cultural and educational supplies, daily necessities, instrument signs, etc. Used for ink, leather, all kinds of Nitro paint, rubber cap, typing wax paper, etc, manufacturing of photographic film, photographic film and leather |
| method of production | 1. A colloidal cotton (usually called pyrocotton) is dispersed in a mixture of ethanol and diethyl ether. 2. Using refined short cotton wool or chemical cotton after loose drying as raw material, esterification is carried out with mixed acid of nitric acid and sulfuric acid to esterify-OH group in cellulose into-ONO2 product. The crude licorice residue was cut to 0.5-1cm, put in an autoclave, and a dilute nitric acid solution of 2% to 5% was added in a ratio of (1: 7) to (1: 10)(mass ratio). Heating, cooking at 100~140 deg C for 0.5~1.5h. After natural cooling to about 40 °c, it was washed with clean water until neutral. The washed slag was digested with 2%~ 6% sodium hydroxide solution [solid: liquid =(1: 7)~(1: 10)] in an autoclave (120~180 °c) 1.5~2.5h. After natural cooling to about 40 ° C., it is washed with water until neutral, air-dried and ready to use. The resultant is a cellulose raw material for chemical reaction. The obtained cellulose raw material of licorice residue was cut, sieved (20 mesh), put into a three-necked flask filled with mixed acid (mixture of nitric acid and sulfuric acid) and water, and stirred at 25~30 °c for 30min, wash with clear water until neutral and filter. What is obtained here is a crude product with insufficient stability properties. The obtained crude product was first boiled with 0.5% dilute sulfuric acid for 30min, cooled, washed with clear water to neutral, then alkali boiled with 0.1% sodium carbonate solution for 30min, and then washed with clear water to neutral. The stability-treated product was obtained. |
| category | flammable liquid |
| toxicity grade | low toxicity |
| Acute toxicity | oral-rat LD50: >5000 mg/kg; Oral-mouse LD50: >5000 mg/kg |
| explosive hazard characteristics | explosive when mixed with oxide; Explosive when mixed with solvent and Air |
| flammability hazard characteristics | in case of open flame, high temperature, flammable oxidant; Toxic nitrogen oxide smoke generated by combustion; flammable after drying |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from the oxidant |
| extinguishing agent | water, carbon dioxide, foam, 1211 extinguishing agent |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-06-05 16:14:02
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