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Pigments & Colorants

Dichromium trioxide

CAS: 1308-38-9

Overview

Dichromium trioxide (CAS 1308-38-9 ) is a high-performance inorganic pigment valued for its exceptional heat stability and chemical resistance across demanding industrial applications. It delivers a durable, opaque green coloration that retains integrity under conditions where organic pigments would degrade.

In coatings and industrial paints, it provides permanent green pigmentation for high-temperature finishes, military coatings, and camouflage applications. This material ensures color consistency under thermal stress, which is critical for specialized surface treatments.

Rubber and tire manufacturers incorporate it to achieve stable green coloration in technical rubber compounds without compromising vulcanization chemistry. This ensures the final product maintains its physical properties while achieving the desired aesthetic.

Plastics processors use it to pigment engineering polymers that undergo high-temperature extrusion or molding. In these environments, organic alternatives would typically discolor or break down, making this inorganic pigment the preferred choice.

Printing inks for packaging and decorative laminates also rely on it for lightfast, chemically resistant green shades. Its stability ensures that printed materials remain vibrant even when exposed to harsh environmental factors or chemicals.

Dichromium trioxide is supplied as a fine, dry powder in technical and pigment grades. Standard specifications include varying particle size distributions and tinting strength classifications to match specific coating, rubber, or plastics processing requirements.

Bulk supply is available in bags and bulk containers, with pigment-grade material typically meeting established industry purity benchmarks. This ensures consistent performance across large-scale manufacturing and industrial chemical applications.

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Physical Properties

Melting Point2435 °C
Boiling Point4000 °C
Density5.22 g/cm³ @ Temp: 25 °C
Flash Point3000°C
AppearanceChromium oxide is a bright green, odorless powder
ColorPale to dark green
Odorat 100.00?%. odorless
Formpowder
Water SolubilityInsoluble
Refractive Index2.551

Safety & Handling

Danger GHS07 GHS08 GHS09 Hazard Statements H302 Harmful if swallowed H317 May cause an allergic skin reaction H319 Causes serious eye irritation H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled H360 May damage fertility or the unborn child H372 Causes damage to organs through prolonged or repeated exposure Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P233 Keep container tightly closed. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P280 Wear protective gloves/protective clothing/eye protection/face protection. P284 In case of inadequate ventilation wear respiratory protection. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P403 Store in a well-ventilated place. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P342+P316 Get emergency medical help immediately. P362+P364 Take off contaminated clothing and wash it before reuse. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code28199090
Storage Class11 - Combustible Solids

Other Names

Chromia | Chrome oxide green | Oxo(oxochromiooxy)chromium | Chromium(iii) oxide | E410

Related Products

Chemical Properties

CAS Number
1308-38-9
EC Number
215-160-9
Mol. Weight
151.990
HS Code
28199090

Industries

Documentation