Melting point :β: decomposes 158℃ [CRC10]
Density :6.100
solubility :insoluble in H2O, dilute acid solutions
form :Powder
color :Yellow
Water Solubility :insoluble H2O, dilute acids; soluble in solutions of alkali iodides or cyanides [MER06]
Sensitive :Light Sensitive
Exposure limits :ACGIH: TWA 0.025 mg/m3 (Skin)
NIOSH: IDLH 10 mg/m3; TWA 0.05 mg/m3; Ceiling 0.1 mg/m3

Symbol(GHS):
Signal word:
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H300 Fatal if swallowed Acute toxicity,oral Category 1, 2 Danger P264, P270, P301+P310, P321, P330,P405, P501 H310 Fatal in contact with skin Acute toxicity,dermal Category 1, 2 Danger P262, P264, P270, P280, P302+P350,P310, P322, P361, P363, P405, P501 H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501 H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501 H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, 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:	P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P320 Specific treatment is urgent (see … on this label). P330 Rinse mouth. P405 Store locked up.