Melting point :710°C
Boiling point :1007 °C
Density :6.82 g/mL at 25 °C(lit.)
solubility :insoluble in H2O
form :Pieces
Specific Gravity :6.82
color :Gray
Water Solubility :Insoluble in water. Decomposes when heated in air. Decomposes in nitric acid and aqua regiaSoluble in strong acids. Insoluble in water and organic solvents.
Crystal Structure :Cubic, Halite Structure - Space Group Fm3m
Merck :14,1278
Exposure limits :ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 CAS DataBase Reference :12068-69-8(CAS DataBase Reference)
EPA Substance Registry System :Bismuth selenide (Bi2Se3) (12068-69-8)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, 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:	P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P273 Avoid release to the environment. P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P314 Get medical advice/attention if you feel unwell.