Product Description:
English name: Selenium dioxide
CAS number: 7446-08-4
Molecular formula: O2Se
Molecular weight: 110.96
EINECS number: 231-194-7
MDL No. : MFCD00003562
Stats
Melting point 315 °C (subl.)(lit.)
Boiling point 684.9 °C(lit.)
Density 4.81 g/mL at 25 °C(lit.)
Vapor pressure 1 mm Hg (157 °C)
Refractive index nD20 <1.76
Flash point 315°C
Storage conditions Store below +30°C.
The solubility is H2O: soluble
Morphology powder
Color white
Specific gravity 3.95
PH 2 (10g/l, H2O, 20℃)
Water solubility 38.4 g/100 mL (14 ºC)
Sublimation point 315 ºC
Merck14, 8434
Exposure limit ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3
Stable. Incompatible with organic materials, strong acids, ammonia, nitric acid, halogen acids. Protect from moisture.
Safety information
hazard symbol (GHS)GHS hazard pictogramsGHS hazard pictogramsGHS Hazard pictogramgrams
GHS06,GHS08,GHS09
Danger
Hazard Description H301+H331-H373-H410
Precautions P273-P301+P310+P330-P304+P340+P311-P314
Dangerous Goods mark T,N,Xn
Hazard category code 36/38-50/53-33-23/25-51/53-20/22
Safety Instructions 26-61-60-45-28A-20/21-28
Dangerous Goods Transport Code UN 3440 6.1/PG 3
WGK Germany2
RTECS number VS8575000
F3
TSCAYes
Customs Code 2811 29 90
Danger level 6.1
Packaging Category II
Toxicity LD50 orally in Rabbit: 68.1 mg/kg
China
