C.I. Pigment White 4

C.I. Pigment White 4 - Names and Identifiers

Name	Zinc oxide
Synonyms	ZNO azo22 azo-66 azo-33 amalox azo-55 actox14 actox16 activox oxozinc azo-55tt azo-66tt actox216 ai3-00277 zincoxide activox b zine white zine oxide Zinc oxide zinc white C.I. 77947 zinci oxidum akro-zincbar90 zincoxideheavy zinkoxyd aktiv akro-zincbar85 flowers of zinc active zinc oxide C.I. Pigment White 4 zinc oxygen(-2) anion
CAS	1314-13-2
EINECS	215-222-5
InChI	InChI=1/O.Zn/q-2;+2

C.I. Pigment White 4 - 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

C.I. Pigment White 4 - 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

C.I. Pigment White 4 - Upstream Downstream Industry

Raw Materials	Zinc Carbonate, Basic Zinc Hydroxide Zinc Zinc
Downstream Products	Zinc sulphate Zinc nitrate Zinc chloride ZINC PHOSPHATE, MONOBASIC Zinc Phosphate Flame Retardant ZB Zinc Carbonate, Basic Zinc carbonate Zinc fluorosilicate Zinc bromide Zinc tetrafluoroborate hydrate

C.I. Pigment White 4 - Reference

Reference

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

C.I. Pigment White 4 - 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：2024-01-02 23:10:35

C.I. Pigment White 4 - 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：2022-01-01 08:54:38

C.I. Pigment White 4 - 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

C.I. Pigment White 4 - 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

C.I. Pigment White 4 - 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

C.I. Pigment White 4 - Use

Open Data Verified Data

used as phosphor matrix, electron laser material, Catalyst, magnetic material manufacturing, etc.

Last Update：2022-01-01 08:54:39

C.I. Pigment White 4 - 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

C.I. Pigment White 4 - 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：2022-01-01 11:06:04

C.I. Pigment White 4 - 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

C.I. Pigment White 4 - 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

C.I. Pigment White 4 - Category

Authoritative Data Verified Data

pharmaceutical excipients, fillers and bacteriostatic agents.

Last Update：2022-01-01 11:24:31

C.I. Pigment White 4 - Storage

Authoritative Data Verified Data

sealed storage.

Last Update：2022-01-01 11:24:32

C.I. Pigment White 4 - 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.