Melting point :-88.01°C
Boiling point :57-58°C
Density :1.408 g/mL at 20 °C (lit.)
refractive index :1.4860-1.4890
Flash point :56-58°C
storage temp. :2-8°C
solubility :Very soluble in ethyl ether and ethyl alcohol.
form :liquid
color :colorless to yellow
Specific Gravity :1.41
Sensitive :Air & Light Sensitive
BRN :1696848
Exposure limits :ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 Stability :Stable. Hydrolyzes in water. Reactions with acid or strong oxidizing agents are dangerous.
CAS DataBase Reference :593-79-3(CAS DataBase Reference)
EPA Substance Registry System :Methane, selenobis- (593-79-3)

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.