Melting point :2435 °C
Boiling point :4000 °C
Density :5.21
refractive index :2.551
Flash point :3000°C
storage temp. :Room Temperature
solubility :Insoluble in all solvents
form :powder
color :Pale to dark green
Specific Gravity :5.22
Odor :at 100.00%. odorless
Water Solubility :Insoluble
Specific Heat Capacity :Cp(crystal): 0.78 J/(g·K), at 25℃
Crystal Structure :Trigonal
crystal system :Three sides
Merck :14,2234
Space group :R3c
Lattice constant :

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.496	0.496	1.359	90	90	120	0.2895

Exposure limits :NIOSH: IDLH 25 mg/m3; TWA 0.5 mg/m3
Stability :Stable.
Cosmetics Ingredients Functions :COLORANT
InChI :1S/2Cr.3O
InChIKey :QDOXWKRWXJOMAK-UHFFFAOYSA-N
SMILES :O=[Cr]O[Cr]=O
CAS DataBase Reference :1308-38-9(CAS DataBase Reference)
NIST Chemistry Reference :Chromium(iii) oxide(1308-38-9)
EPA Substance Registry System :Chromium(III) oxide (1308-38-9)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P321 Specific treatment (see … on this label).