active zinc oxide
Zinc oxide
CAS: 1314-13-2
Molecular Formula: ZnO
active zinc oxide - Names and Identifiers
active zinc oxide - Physico-chemical Properties
| Molecular Formula | ZnO |
| Molar Mass | 81.39 |
| Melting Point | 1975℃ |
| Boling Point | 2360℃ |
| Water Solubility | 1.6 mg/L (29℃) |
| Solubility | Soluble in dilute acetic acid, mineral acid, ammonia, alkali solution, almost insoluble in water |
| Appearance | White to light yellow crystalline powder |
| Storage Condition | Room Temprature |
| MDL | MFCD00011300 |
| Physical and Chemical Properties | Character white hexagonal crystal or powder. Tasteless, fine quality. melting point 1975 ℃ relative density 5.606 refractive index 2.008~2.029 soluble in acid, sodium hydroxide, ammonium chloride, insoluble in water, ethanol and ammonia. The production method is obtained by calcining zinc carbonate. obtained by decomposition of zinc hydroxide by calcination. From the crude zinc oxide smelting into zinc, and then by high temperature air oxidation. obtained by oxidation of molten zinc. production methods currently used by the zinc ingot as a raw material of the indirect method (also known as the French method), zinc ore as a raw material of the direct method (also known as the United States law) and wet three. indirect method. Reaction equation: 2ZnO O2 → 2ZnO operation method: After the zinc ingot prepared by electrolysis is heated to 600~700 ℃ and melted, it is melted and gasified at a high temperature of 1250 to 1300 ° C., and hot air is introduced for oxidation. The generated zinc oxide is cooled and cyclone separated, and the fine particles are trapped with a bag to prepare a finished zinc oxide product. direct method. Reaction equation: C O2 → CO2 CO2 C → CO ZnO CO → Zn (vapor) CO2 Zn (vapor) CO O2 → ZnO CO2 operation method: the calcined zinc ore powder (or zinc-containing material), anthracite coal (or Coke) and limestone are prepared into balls according to the ratio of 1:0.5:0.05. After reduction smelting at 1300 ℃, the zinc oxide in the ore powder is reduced to zinc vapor, which is then oxidized by air, and the generated zinc oxide is captured to obtain a finished zinc oxide product. wet method. Zinc sulfate is formed by reacting zinc ash with sulfuric acid, and then it is reacted with sodium carbonate and ammonia respectively to prepare zinc oxide from zinc carbonate and zinc hydroxide. The reaction equation is as follows: Zn H2SO4 → ZnSO4 H2 ↑ ZnSO4 Na2CO3 → ZnCO3 Na2SO4 ZnSO4 2NH3 · H2O → Zn(OH)2 (NH4)2SO4 zinc carbonate as raw material, after washing, drying, calcination, grinding products prepared by zinc oxide. ZnCO2 → ZnO CO2 zinc hydroxide was used as raw material to prepare zinc oxide by water washing, drying, calcining, cooling and grinding. The production method of Zn(OH)2 → ZnO H2O currently used is the indirect method using zinc ingot as raw material (also called French method), direct method (also known as the United States law) and wet three kinds of zinc ore as raw material. The zinc ingot was heated to 1000 ° C. By an indirect method, melted and vaporized, and hot air was introduced for oxidation. The resulting zinc oxide was cooled, cyclone-separated, and fine particles were collected in a cloth bag. Thus, a finished product of zinc oxide is obtained. 2Zn O2 → 2ZnO The direct roasting method of zinc ore powder, anthracite and lime are formulated into spheres in proportion. After reduction smelting, the zinc oxide in the ore powder is reduced to zinc vapor, and then the air is introduced for oxidation, and the generated zinc oxide is trapped to obtain a finished zinc oxide product. 2ZnO C → 2Zn CO2 2Zn O2 → 2ZnO Zinc ash used in wet process reacts with sulfuric acid to form zinc sulfate, and then reacts with sodium carbonate and ammonia respectively, the prepared zinc carbonate and zinc hydroxide were used as raw materials to prepare zinc oxide by calcination and pulverization. Zn H2SO4 → ZnSO4 H2 ↑ ZnSO4 Na2CO3 → ZnCO3 Na2SO4 zinc oxide was prepared from zinc carbonate by washing, drying, calcining and grinding. ZnCO3 [Δ] → ZnO CO2 zinc oxide was prepared from zinc hydroxide by water washing, precipitation, drying, calcination, cooling and pulverization. Zn(OH)2 [Δ] → ZnO H2O White Crystal or powder, belonging to hexagonal system. Odorless, non-toxic, no sand, fine and fine quality. Density 5.606g/cm3, refractive index 2.0041,1800 degrees sublimation. The tinting power is twice that of the basic lead carbonate, and the hiding power is half that of the two oxides and zinc sulfide. Insoluble in water and ethanol, soluble in acid, sodium hydroxide, ammonium chloride, amphoteric oxide. When heated at high temperature, it is yellow, and the white color is restored after cooling. In the humid air can absorb carbon dioxide and moisture gradually become basic zinc carbonate. It can also be reduced to metallic zinc by carbon or carbon monoxide. There is excess zinc in the zinc oxide lattice, the first ionization energy of zinc is relatively low, easy to lose electrons, and the electron mobility of zinc oxide is much larger than the hole mobility, which can be regarded as an n-type semiconductor. |
| Use | It is used as a pigment for paint and a filler for rubber. It is used in medicine to make ointments, zinc pastes, plasters, etc.Suitable for use as a zinc supplement in feed processingMainly used in rubber or cable industry as a reinforcing agent and active agent, also as a white adhesive colorant and filler, used in chloroprene rubber curing agentApplication of raw material gas for fine desulfurization in chemical fertilizer industryMainly used as white pigment, rubber vulcanization active agent, reinforcing agent, organic synthesis catalyst, desulfurization agent, used in electrostatic copying, pharmaceutical, etcApplications for ammonia synthesis, oil, natural gas, chemical feed gas desulfurizationUse as a matrix for analytical reagents, reference reagents, fluorescent agents, and photosensitive materialsApplications for electrostatic wet copying, dry transfer, laser fax communications, electronic |
active zinc oxide - Risk and Safety
| Hazard Symbols | N - Dangerous for the environment |
| Risk Codes | R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | N/A |
active zinc oxide - Upstream Downstream Industry
active zinc oxide - Reference
| Reference Show more | 1. Zhan, Y-H, Wei, Y-C, Zhang, H-F, Luo, M-C, Zheng, T-T, Liao, S. Analysis of the thermogenesis mechanism of natural rubber under high speed strain. Polym Adv Technol. 2020; 31: 1994– 2006. https://doi.org/10.1002/pat.4923 2. [IF=5.03] Tingting Zheng et al."Study on the ozone aging mechanism of Natural Rubber."Polym Degrad Stabil. 2021 Apr;186:109514 3. [IF=4.379] Zhan Yue-Hua et al."Effect of protein on the thermogenesis performance of natural rubber matrix."Sci Rep-Uk. 2020 Oct;10(1):1-9 4. [IF=3.665] Yue-Hua Zhan et al."Analysis of the thermogenesis mechanism of natural rubber under high speed strain."Polym Advan Technol. 2020 Sep;31(9):1994-2006 |
active zinc oxide - Nature
Open Data Verified Data
white powder. Odorless. The relative density is 5. 606; Melting point 1975 °c; Sublimation at 1720 °c. Stable at room temperature, insoluble in water and alcohol, soluble in acid, alkali ammonia salt solution, amphoteric oxide. Absorption of carbon dioxide and water in the air to produce zinc carbonate white, should be sealed preservation. Not reduced by hydrogen, it is lemon yellow when heated, and turns white after cooling. It has good hiding power and coloring power.
Last Update：2025-06-10 22:55:16
active zinc oxide - Preparation Method
Open Data Verified Data
high-purity zinc acetate was dissolved in water, and a high-purity ammonium carbonate solution was added with stirring to convert the zinc acetate into a zinc carbonate precipitate. ZnCO3 was filtered with suction, washed with water for several times, dried and dried in a loo * C oven to obtain high-purity zinc oxide by burning. Alternatively, high purity zinc nitrate is added to water with constant stirring and high purity ammonia is added to convert ZnN03 to Zfl(OH)2 for precipitation. Zn(OH)2 is filtered with suction, washed with hot water, dried, dried, and then heated to 500~800 ℃ to obtain high purity zinc oxide.
Last Update：2025-06-10 22:55:16
active zinc oxide - Standard
Authoritative Data Verified Data
The content of ZnO shall not be less than 99. 0% as calculated after burning to constant weight.
Last Update：2024-01-02 23:10:35
active zinc oxide - Trait
Authoritative Data Verified Data
- This product is a white to very yellowish white fine powder without sand; Odorless; Can slowly absorb carbon dioxide in the air.
- This product is insoluble in water or ethanol; Dissolved in dilute acid.
Last Update：2022-01-01 11:24:29
active zinc oxide - Introduction
Standard substance for calibration of disodium ethylenediaminetetraacetate. In the redox volumetric determination of manganese, it is used to precipitate the hydrolyzable elements of salts, such as iron, chromium, vanadium, titanium and zirconium. Used as hydrogen sulfide absorbent.
Last Update：2022-10-16 17:13:16
active zinc oxide - Application
Open Data Verified Data
used as phosphor matrix, electron laser material, Catalyst, magnetic material manufacturing, etc.
Last Update：2025-08-19 16:24:40
active zinc oxide - Differential diagnosis
Authoritative Data Verified Data
- take this product, strengthen the heat, it becomes yellow; Cool, yellow will disappear.
- The dilute hydrochloric acid solution of this product shows the identification reaction of zinc salt (General rule 0301).
Last Update：2022-01-01 11:24:30
active zinc oxide - Safety
Open Data Verified Data
packed in woven bags of 80g Kraft paper or polyethylene plastic bag with 2-3 layers, each with a net weight of 25kg and 30kg. Store in a ventilated, cool, dry warehouse. The package should be tightly sealed to prevent breakage. Protection against heat, water and moisture. And pay attention to the strong acid and edible raw materials Isolation storage. In case of fire, it can be suppressed by using water, foam fire extinguishing equipment or other fire extinguishing equipment. Toxicity and protection: poisoning will appear poor appetite, polydipsia, fatigue, chest tightness and tenderness, drowsiness, Dry Cough, and will appear high body temperature, pupil dilation, conjunctiva and pharynx, facial congestion, diabetes, sometimes hepatomegaly. Severe pulmonary interstitial edema, alveolar epithelial destruction. Poisoning occurs with inhalable alkaline substances, intravenous injection of glucose (40% solution 20ml) and MG of ascorbic acid. The patient took cardiotonic drugs according to symptoms. The maximum allowable concentration in air is 0.5 mg/m3. During the operation, you should wear a gas mask, protective glasses and work clothes. Hot water bath after work. Care should be taken to prevent the formation and emission of vapors and aerosols into the workplace air. Attention should be paid to dust and ventilation.
Last Update：2025-06-10 22:55:16
active zinc oxide - Exam
Authoritative Data Verified Data
alkalinity
take this product l .O g, add 10ml of New boiling hot water, shake for 5 minutes, let cool, filter, add 2 drops of phenolphthalein finger liquid to the filtrate, such as pink, add hydrochloric acid titration solution (0. lm Ol/L )0 . 10ml, pink color should disappear.
sulfate
take this product l.O g, add appropriate amount of dilute hydrochloric acid to dissolve, check according to law (General rule 0802), and standard potassium sulfate solution 0. Compared with the control solution made of 5m l, it should not be deeper (0. 005%).
insolubles in carbonate and acid
Take 2. 0g of this product, add 10ml of water to mix, add 30ml of dilute sulfuric acid, place it on a water bath and heat it without bubbles. After stirring, the solution should be clear.
ignition weight loss
take this product about l .O g, precision weighing, burning to constant weight at 8001C, loss of weight should not exceed 1.0%.
Iron Salt
take this product 0.40g, add 15ml of dilute hydrochloric acid 8M U water and 2 drops of nitric acid, boil for 5 minutes to dissolve, let it cool, add appropriate amount of water to make 50ml, shake well, then take 25ml, add water 1 0 m l, check according to law (General 0807), and standard iron solution 1. Compared with the control solution made of 0 M l, it should not be deeper (0. 005%).
Lead
take this product 5. 0g, add 50% nitric acid 24ml, boil for 1 min, cool, dilute to 1 0 0ml, according to Atomic Absorption Spectrophotometry (General rule 2321) determination, should not exceed 50 parts per million.
arsenic salt
take l.Og of this product, add 5ml of hydrochloric acid and 23ml of water to dissolve, check according to law (General rule 0822 first law), should comply with the regulations (0002%).
Last Update：2022-01-01 11:24:31
active zinc oxide - Content determination
Authoritative Data Verified Data
take this product about O .lg, precision weighing, add 2ml of dilute hydrochloric acid to dissolve, add 2 5 m l of water, add 1 drop of 0.025% methyl red ethanol solution, add Dropwise ammonia test solution until the solution is yellowish, add 2 5 m l of water, 10ml of ammonia-gasified ammonium buffer (ph10.0) and a little chrome black T indicator, and use ethylenediamine tetraacetic acid disodium titration solution (0.05mol/L). Titration to the solution changed from purple to pure blue. Each 1 ml of ethylene diamine tetraacetic acid disodium titration solution (0. 05mol/L) is equivalent to 4. 069mg of ZnO.
Last Update：2022-01-01 11:24:31
active zinc oxide - Category
Authoritative Data Verified Data
pharmaceutical excipients, fillers and bacteriostatic agents.
Last Update：2022-01-01 11:24:31
active zinc oxide - Storage
Authoritative Data Verified Data
sealed storage.
Last Update：2022-01-01 11:24:32
active zinc oxide - Zinc Oxide Ointment
Authoritative Data Verified Data
This product contains zinc oxide (ZnO) should be labeled the amount of 93.0% ~ 107.0%.
trait
This product is white to light yellow ointment.
identification
take about lg of this product, Add 10ml of dilute hydrochloric acid, heat and stir to dissolve zinc oxide, let it cool, filter, and the filtrate shows the identification reaction of zinc salt (General rule 0301).
examination
should comply with the relevant provisions under ointment (General rule 0109).
Content determination
take about 0.5g of this product, precision weighing, add chloroform 10ml, slightly warm, melt the Vaseline, add 0.5mol/L sulfuric acid solution 10ml, stir to dissolve the zinc oxide, according to the method under the item of zinc oxide, from "1 drop of ethanol solution with 0.025% methyl red", the determination was carried out according to law. Each 1 ml of ethylene diamine tetraacetic acid disodium titration solution (0.05mol/L) corresponds to 4.069mg of ZnO.
category
Same as zinc oxide.
specification
(l)20g:3g (2)500g:75g
storage
sealed storage.
Last Update：2022-01-01 15:36:36
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View History
Raw Materials for active zinc oxide
Downstream Products for active zinc oxide
Zinc nitrate
ZINC PHOSPHATE, MONOBASIC
Zinc Phosphate
Zinc Carbonate, Basic
Zinc bromide
Zinc tetrafluoroborate hydrate
ZINC PHOSPHATE, MONOBASIC
Zinc Phosphate
Zinc Carbonate, Basic
Zinc bromide
Zinc tetrafluoroborate hydrate