Chromium(VI) oxide CAS# 1333-82-0

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  • Appearance:Dark red flaps
  • Assay: 99. 8%min
  • Packaging:50kg/ Steel drum
  • Sample: Available

Quality Control of Chromium(VI) oxide

Chemical Structure
Chromium(VI) oxide CAS# 1333-82-0
Packing of Chromium(VI) oxide

Description of Chromium(VI) oxide

Chromium trioxide is an inorganic compound with the formula CrO3. It is the acidic anhydride of chromic acid, and is sometimes marketed under the same name. This compound is a dark-purple solid under anhydrous conditions, bright orange when wet and which dissolves in water concomitant with hydrolysis. Millions of kilograms are produced annually, mainly for electroplating. Chromium trioxide is a powerful oxidiser and a suspected carcinogen.

Basic Info of Chromium(VI) oxide

Basic Info

Chemical Name

chromium trioxide

Synonyms

Chromium Trioxide;CROMIUM TRIOXIDE;Chromium(VI) oxide;Chromic anhydride;Chromium Oxide;Expand

CAS No.

1333-82-0

Molecular Formula

CrO3

Molecular Weight

99.99430

PSA

51.21000

LogP

-0.35640

 

Safety Info

RTECS

GB6650000

Hazard Class

5.1

Safety Statements

S45-S53-S60-S61

HS Code

2819100000

WGK Germany

3

Packing Group

II

RIDADR

UN 1463

Risk Statements

R24/25; R26; R35; R42/43; R45; R46; R48/23; R50/53; R62; R9

Hazard Codes

O; T+; N

Symbol

GHS03, GHS05, GHS06, GHS08, GHS09

Hazard Declaration

H271; H301 + H311; H314; H317; H330; H334; H340; H350; H361f; H372; H410

Signal Word

Danger

Caution Statement

P201; P210; P260; P280; P284; P301 + P310 + P330; P303 + P361 + P353; P304 + P340 + P310; P305 + P351 + P338; P308 + P313; P371 + P380 + P375; P403 + P233

 

Properties

Appearance & Physical State

dark red crystals or powder

Density

2.7g/cm3

Boiling Point

330ºC

Melting Point

196ºC

Freezing Point

170~172℃

Flash Point

250ºC

Water Solubility

Highly soluble

Stability

Stable. Strong oxidizer. Reacts with most organic material in a violent and often explosive fashion. Moisture sensitive.

Storage Condition

Do not store near combustible materials. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.

 

Numbering system

RTECS number

GB6650000

MDL number

MFCD00010952

PubChem number

24856401

EINECS number

215-607-8

 

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What is Chromium(VI) oxide?

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Chromium(VI) oxide which has developed particularly rapidly in recent years. Do you know about Chromium(VI) oxide?

 

The official answer:Chromium trioxide is an inorganic substance with the molecular formula CrO3 and a molecular weight of 99.99. It is a dark red or dark purple rhombohedral crystal, easily deliquescent. It begins to decompose when heated to the melting point and decomposes completely when heated to the boiling point. Used in the production of chromium compounds, oxidizing agents, catalysts, in addition to wood preservation, electroplating, etc. Produced by the reaction of concentrated sulfuric acid and potassium dichromate. 

What’s the application of Chromium(VI) oxide?

1、It is mainly used in the electroplating industry, as raw material for electroplating chromium of bicycle, sewing machine, watch, meter, flashlight, daily hardware, etc. It is also used to make high purity chromium metal. It is the raw material for manufacturing chrome oxide green and zinc chrome yellow; it is also the raw material for producing low-temperature conversion catalysts, high-temperature conversion catalysts, and high-pressure methanol synthesis catalysts. It is used as a mordant in dyeing wool fabric and as an oxidizer in the printing and dyeing industry. In addition, it is also used for wood preservation.

2、Used as a catalyst for taking medium-pressure polyethylene by Phillip’s method.

3, an important chromium compound, chromic anhydride is the most important raw material for the electroplating industry, used as the main raw material for electroplating chromium. Most chromic anhydride is consumed in the electroplating industry. Chromic anhydride is a good oxidizing agent, used in bleaching and refining, also used as raw material for dyes, mordant, tanning agent, and catalyst for organic synthesis reaction. In addition, it is also used in medicine, ceramics, colored glass, and other industries.

4、Used as analytical reagent, strong oxidizing agent, and preparation of chromate.

5、Used as a catalyst for the synthesis of polyethylene. Also used in chromium plating, mordant, and preparation of pure chromium metal.

6、Application in the passivation of galvanization Most of the passivation of galvanization layer uses chromic anhydride, which is the main component of film formation. In the chemical oxidation of aluminum and alloys, chromic anhydride is the oxidizing agent in the solution and an indispensable component for the formation of the film layer.

7、It is used in the electroplating industry, pharmaceutical industry, printing industry, leather tanning, and fabric mordanting.

Conclusion

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