Chromium trioxide, also known as chromium oxide, chromium oxide green, chromium green, is a dark green crystalline powder with metallic luster, belongs to the hexagonal crystal system or tripartite crystal system, and α-alumina is the same crystal type. Chemical formula Cr2O3, molecular weight 151.99, relative density 5.21 (21 ℃), Mohs hardness 9, harder than quartz, steel, melting point 2266 ± 25 ℃, boiling point 3000 ℃ or more, chemical properties are extremely stable. It is magnetic, insoluble in water and ethanol, and resistant to both acids and bases. Even in the red hot state by the hydrogen gas is almost not reduced. In addition, and sulfur yellow and hydrogen sulfide together with the heating is also very difficult to react. Chrome green oxide burned by high temperature is inert to acid and alkali, but can be eutectic with acidic melts, into soluble chromium (III) salt. And bromate alkali metal salt solution together with the reaction of heating and dissolved, can be dissolved in hot potassium bromate solution.

Product Description:

Soluble in heated potassium bromate solution, slightly soluble in acids and alkalis, almost insoluble in water, ethanol and acetone. There is irritation.. It has a metallic luster. It is extremely stable to light, atmosphere, high temperature and corrosive gases such as sulfur dioxide and hydrogen sulfide. It has high hiding power and is magnetic. It turns brown when hot, and turns green when cold. Crystals are extremely hard. The property is extremely stable, and there is no change even when hydrogen is introduced under red heat. It's irritating.

Specifications of Chromium Oxide Green (CAS 1308-38-9)

International Equivalents:  

Application:

1. Mainly used in special steel smelting tapping mouth, slide mouth and large incinerator.

2. Can be used for ceramic and enamel coloring, rubber coloring, preparation of high temperature resistant coatings, art pigments, ink for the preparation of printed notes and securities. 

3. The color of chromium oxide green is similar to that of plant chlorophyll, which can be used in camouflage paint and can be difficult to distinguish in infrared photography.

4. Also a large number of used in metallurgy, production of refractory materials, grinding powder. It can also be used as a catalyst for organic synthesis and is a high-grade green pigment.

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