Ammonium sulfide

  • Ammonium bisulfide
  • Ammonium hydrogen sulfide
  • Ammonium hydrosulfide
Formula
NH4HS
Structure
Description
Clear, yellowish liquid. Kept basic with NaOH as acid will release hydrogen sulfide gas.
Uses
Substance is used in lubricants.

Registry Numbers and Inventories.
CAS
12124-99-1
EC (EINECS/ELINCS)
235-184-3
RTECS
BS4900000
RTECS class
Other
UN (DOT)
2683
Merck
12,527
Beilstein/Gmelin
30573 (G)
Swiss Giftliste 1
G-1122
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
H5NS
Formula mass
51.11
Melting point, °C
120
Sublimation point, °C
88
Vapor pressure, mmHg
355 (20 C)
Density
1.18 g/cm3
Solubility in water
Soluble
Refractive index
1.74

Hazards and Protection.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Make no contact with the spilled material. Fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire. ELIMINATE all ignition sources and ground all equipment. Stop leak if you can do it without risk. A vapor suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean non-sparking tools to collect absorbed material.
Incompatibilities
Keep away from acids, reducing agents and strong bases.

Fire.
Fire fighting
Small Fires: Dry chemical, CO2, water spray or alcohol-resistant foam. Large Fires: Water spray, fog or alcohol-resistant foam.
Fire potential
Flammable/combustible material. May be ignited by heat, sparks or flames.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
2
Exposure effects
   Ingestion
May cause toxic effects.
   Inhalation
Vapors may cause dizziness or suffocation. May cause toxic effects.
   Skin
Contact with substance may cause severe burns.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush with running water for at least 20 minutes. Wash skin with soap and water.
   Eyes
In case of contact with substance, immediately flush with running water for at least 20 minutes.

Transport.
UN number
2683
Response guide
Hazard class
6.1