Pigments & Colorants
REACH
Dichromium trioxide
CAS Number
1308-38-9
EC Number
215-160-9
What is Dichromium trioxide?
Dichromium trioxide (CAS 1308-38-9) is a high-performance inorganic pigment valued for its exceptional heat stability and chemical resistance.
Where is Dichromium trioxide used?
- Coatings and industrial paints: permanent green pigmentation for high-temperature finishes, military coatings, and camouflage
- Rubber and tire compounds: stable green coloration without compromising vulcanization chemistry
- Plastics: pigment for engineering polymers undergoing high-temperature extrusion or molding
- Printing inks for packaging and decorative laminates: lightfast, chemically resistant green shades
- It delivers a durable, opaque green coloration that retains integrity where organic pigments would degrade.
Commercial specifications
- Varying particle size distributions and tinting strength classifications
- Bulk supply in bags and bulk containers
- Pigment-grade material typically meeting established industry purity benchmarks
Other Names (Synonyms)
Chromia|Chrome oxide green|Oxo(oxochromiooxy)chromium|Chromium(iii) oxide|E410
What are the physical properties of Dichromium trioxide?
Melting Point 2435 °C
Boiling Point 4000 °C
Density 5.22 g/cm³ @ Temp: 25 °C
Flash Point 3000°C
Appearance Chromium oxide is a bright green, odorless powder
Color Pale to dark green
Odor Odorless
Form powder
Water Solubility Insoluble
Refractive Index 2.551
How is Dichromium trioxide classified and handled safely? Learn More
Danger
GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard
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.
Which trade and regulatory codes apply to Dichromium trioxide?
HS Code 28199090
Storage Class 11 - Combustible Solids