Selenium(IV) oxide

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