Chromium

Melting point :1857 °C (lit.)
Boiling point :2672 °C (lit.)
Density :7.14 g/mL at 25 °C (lit.)
Flash point :50 °F
storage temp. :no restrictions.
solubility :reacts with dilute acid solutions
form :powder
Specific Gravity :7.2
color :Silver-gray
Odor :Odorless
Flame Color :Silvery white
PH :<1 (H2O, 20°C)
Resistivity :12.7 μΩ-cm, 20°C
Water Solubility :Insoluble in water.
Electrical Conductivity :7.9× 10⁶S/m
Thermal Conductivity :94 W/(m·K)
Specific Heat Capacity :Cp(crystal): 0.45 J/(g·K); Cp(gas): 0.4 J/(g·K), at 25℃
Merck :13,2252
Exposure limits :ACGIH:TLV-TWA 0.0002 mg/m3,as Cr(VI),Inhalable particulate matter; TLV-STEL 0.0005 mg/m3,as Cr(VI),Inhalable particulate matter
OSHA:PEL-TWA 0.5 mg/m3
NIOSH:REL-TWA 0.5 mg/m3 Stability :Stable. Incompatible with carbonates, strong bases, mineral acids, lithium, sulfur dioxide, strong acids.
Cosmetics Ingredients Functions :COLORANT
InChI :1S/Cr
InChIKey :VYZAMTAEIAYCRO-UHFFFAOYSA-N
SMILES :[Cr]
Hardness, Brinell :125
Hardness, Knoop :144, Converted from Brinell
Hardness, Rockwell B :72, Converted from Brinell
Hardness, Vickers :131, Converted from Brinell
Modulus of Elasticity :248 GPa
CAS DataBase Reference :7440-47-3(CAS DataBase Reference)
NIST Chemistry Reference :Chromium(7440-47-3)
IARC :3 (Vol. Sup 7, 49) 1990
EPA Substance Registry System :Chromium (7440-47-3)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H228 Flammable solid Flammable solids Category 1 Category 2 Danger Warning P210, P240,P241, P280, P370+P378 H351 Suspected of causing cancer Carcinogenicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501 H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P240 Ground/bond container and receiving equipment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P308+P313 IF exposed or concerned: Get medical advice/attention. P405 Store locked up.