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7791-23-3

Name SELENIUM OXYCHLORIDE
CAS 7791-23-3
EINECS(EC#) 232-244-0
Molecular Formula Cl2OSe
MDL Number MFCD00016327
Molecular Weight 165.87
MOL File 7791-23-3.mol

Chemical Properties

Appearance Selenium oxychloride is a colorless to yellowish liquid. Fumes in air.
Melting point  9 °C
Boiling point  180 °C(lit.)
density  2.43 g/mL at 25 °C(lit.)
refractive index  1.651
Fp  176.4°C
solubility  Miscible with chloroform, carbon disulphide and benzene.
form  Liquid
color  Yellow
Specific Gravity 2.42
Stability: Stable, but reacts with water and moisture. Incompatible with water, potassium, phosphorus.
Water Solubility  decomposed in H2O to HCl, selenious acid; miscible with CCl4, CHCl3, CS2, benzene, toluene [MER06]
Sensitive  Moisture Sensitive
Merck  14,8435
Dielectric constant 46.0
Exposure limits ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3
CAS DataBase Reference 7791-23-3(CAS DataBase Reference)
EPA Substance Registry System Selenium oxychloride (7791-23-3)

Safety Data

Hazard Codes  T,N
Risk Statements 
R14:Reacts violently with water.
R23/25:Toxic by inhalation and if swallowed .
R33:Danger of cumulative effects.
R35:Causes severe burns.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S20/21:When using, do not eat, drink or smoke .
RIDADR  UN 2879 8/PG 1
WGK Germany  3
RTECS  VS7000000
TSCA  Yes
HazardClass  8
PackingGroup  I
HS Code  28121099
Safety Profile
Poison by skin contact and subcutaneous routes. Human systemic effects by skin contact with very small amounts: primary irritant, corrosive. Explodes on contact with potassium, white phosphorus. Ignites on contact with antimony. Vigorous reaction with metal oxides (e.g., silver oxide, lead@) oxide, lead(Ⅳ) oxide, lead(II)(IV) oxide). When heated to decomposition it emits very toxic fumes of Cland Se. See also SELENIUM COMPOUNDS and CHLORIDES.
Hazardous Substances Data 7791-23-3(Hazardous Substances Data)
Toxicity
LD50 s.c. in rabbits: 7 mg/kg (Wilber)

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