Chromic Acid/Chromium Trioxide/Chromic Anhydride

Basic inorganic chemistry, Chemistry Inorganic. The original refers to compounds that are related to or derived from non-living things, and generally refer to compounds that do not contain carbon atoms except carbonates and carbon oxides. Such as Fundamental Inorganic Chemistry, Inorganic Compounds, inorganic acids, inorganic salts, inorganic coatings, inorganic pigments, inorganic fertilizers and so on;

Oxide is the compound (and certainly pure). Its composition contains only two elements, one of which must be oxygen, and if the other is a metal element, it is called The Metal Oxide ; If the other is not a metallic element, it is called a non-metallic oxide eg Acidic Oxide Chemicals. Oxides in a broad sense refer to binary compounds composed of Oxygen Elements and another chemical element, such as Carbon dioxide (CO₂), calcium oxide (CaO), carbon monoxide (CO) and so on.
The Elementary Substance must be a Pure Substance composed of single element, so the mixture cannot be elemental. An element may have several elemental constituent forms, not just simple substance.

We Wuhan Ruisunny Chemical Co., Ltd has been focusing on trading of such chemicals as Calcium Hypochlorite, Trichloroisocyanuric Acid, Ammonium Bicarbonate, Sodium Hydroxide , Hydrogen Peroxide and Silane etc. since 2007. We hereby have following details for the product as:

chromium trioxide:  CrO3,A red compound; rhombic; r.d. 2.70;m.p. 196°C. It can be manufactured by careful addition of concentrated sulphuric acid to an ice-cooled concentrated aqueous solution of sodium dichromate with stirring. The mixture is then filtered through sintered glass, washed with nitric acid, then dried at120°C in a desiccator. 

Chromium(VI) oxide is an extremely powerful oxidizing agent especially to organic matter; it immediately inflames ethanol. It is anacidic oxide and dissolves in water to form ‘chromic acid’, a powerful oxidizing agent and cleansing fluid for glassware. At 400°C, chromium(VI)oxide loses oxygen to give chromium(III) oxide.

1)    Basic information for the chromium trioxide

Product name: chromium trioxide

Alias: Chrormic trioxide;CHROMIC ACID FLAKES 99.5 PERCENT MIN;Chromium(VI) oxide, 99.90%;Chromium(VI) oxide, ACS reagent;CHROMIUM TRIOXIDE REAGENT (ACS);CHROMIUM TRIOXIDE, 50% AQUEOUS (W/W);Chromic;Chromiumtrioxideandydrous

CAS No. : 1333-82-0;

EINECS: 215-607-8

Molecular Formula (MF):      CrO3

Molecular Weight (MW):     100.0

2）  Physical and chemical properties

Appearance: Reddish-violet solid

Density: 2.7 g/ml;

Melting Temp.: 196 Celsius degree

Product specification: 99% min.

Packing: 25kg or 50kg bag; or as requested.

3)    Notice on Safety information:

Danger Class: 5.1

Risk Statements:   45-46-9-24/25-26-35-42/43-48/23-50/53-62-8

Safety Statements: 53-45-60-61-36/37/39-28-26-22 

UN NO. Under IMDG:  1463;

Packing Group:    II

Toxicity: ; LD50 oral (rat) 80 mg/kg; PEL (OSHA) 0.1 mg (CrO3)/m3 (ceiling);TLV-TWA (ACGIH) 0.05 mg (Cr)/m3

Incompatibilities