Hydrazine monochloride

  • Hydrazine, monohydrochloride
  • Hydrazinium monochloride
  • Hydrazinium chloride
Formula
H4N2.HCl
Structure
Description
White orthorhombic crystals

Registry Numbers and Inventories.
CAS
2644-70-4
EC (EINECS/ELINCS)
220-154-4
RTECS
MV4625000
RTECS class
Mutagen
UN (DOT)
3288
Beilstein/Gmelin
22040 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
ClH5N2
Formula mass
68.50
Melting point, °C
89-93
Decomposition point, °C
240
Density
1.5 g/cm3 (20 C)
Solubility in water
Readily soluble

Hazards and Protection.
Storage
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Keep container tightly closed.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Avoid runoff into storm sewers and ditches which lead to waterways. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation. Clean up residual material by washing area with a 2-5% solution of soda ash.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents - bases.
Decomposition
Hydrogen chloride, nitrogen oxides, irritating and toxic fumes and gases, nitrogen.

Fire.
Flash Point,°C
240
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use agent most appropriate to extinguish fire.
Fire potential
Non-Combustible
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
May cause cancer in humans.
   Ingestion
Harmful if swallowed.
   Inhalation
Not available.
   Skin
May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
   Eyes
Not available.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. Get medical aid. DO NOT use mouth-to-mouth respiration.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Discard contaminated clothing in a manner which limits further exposure. Get medical aid if symptoms occur.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
3288
Response guide
Hazard class
6.1
Packing Group
I; II; III