Chromium trioxide 99.7%, 99.5%

Chromium trioxide is the 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 red/orange brown solid, which dissolves in water concomitant with hydrolysis. Millions of kilograms are produced annually, mainly for electroplating.

 

Other names

Chromic anhydride, chromic acid, anhydride

 

Identifiers

CAS number1333-82-0

HS Code2819100000

UN number1463

 

Properties

Molecular formulaCrO3

Molar mass 99.9943 g/mol

Appearance dark red granular solid

OdorOdorless

Density 2.70 g/cm3 (20 °C)

Melting point197°C

Boiling point251°C, decomposes

Solubility in water 61.7g/100ml (0°C),63g/100ml(25°C),67g/100ml (100°C)

Solubility soluble in sulfuric acid, nitric acid

 

Packaging & Delivery

Packaging Detail: 25Metric /20'FCL

Delivery Detail : With 15 days after receipt the payment

 

Uses :

Chromium trioxide is mainly used in chrome-plating. Typically it is employed with additives that affect the plating process but do not react with the trioxide. The trioxide reacts with cadmium, zinc, and other metals to generate passivating chromate films that resist corrosion

 

Safety:

Chromium trioxide is highly toxic, corrosive, and carcinogenic. It is the main example of hexavalent chromium, an environmental hazard. The related chromium(III) derivatives are not particularly dangerous; thus reductants are used to destroy chromium(VI) samples.

 

Chromium trioxide, being a powerful oxidizer, will ignite some organic materials (such as ethanol) on contact