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16721-80-5

Name Sodium hydrosulfide
CAS 16721-80-5
EINECS(EC#) 240-778-0
Molecular Formula HNaS
MDL Number MFCD00011124
Molecular Weight 56.06
MOL File 16721-80-5.mol

Chemical Properties

Appearance white crystals or powder with a very unpleasant smell
Melting point  55°C
density  1,79 g/cm3
RTECS  WE1900000
Fp  90°C
solubility  soluble in H2O, EtOh, ethyl ether
form  Solid
color  Off-white
Stability: Stable, but hygroscopic. Flammable solid. May ignite in air.
Water Solubility  620 g/L (20 ºC)
Sensitive  Moisture Sensitive & Hygroscopic
CAS DataBase Reference 16721-80-5(CAS DataBase Reference)
EPA Substance Registry System 16721-80-5(EPA Substance)

Safety Data

Hazard Codes  C,F
Risk Statements 
R31:Contact with acids liberates toxic gas.
R34:Causes burns.
Safety Statements 
S25:Avoid contact with eyes .
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) .
RIDADR  2318
TSCA  Yes
HazardClass  4.2
PackingGroup  II
Safety Profile
Poison by intraperitoneal and subcutaneous routes. Mutation data reported. A corrosive irritant to skin, eyes, and mucous membranes. Flammable when exposed to heat or flame. Spontaneous combustion. Reacts violently with Qazonium salts. Readily yields HS. When heated to decomposition it emits toxic fumes of SO, and NazO. See also SULFIDES and MERCAPTANS.
Hazardous Substances Data 16721-80-5(Hazardous Substances Data)

Hazard Information

Material Safety Data Sheet(MSDS)

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