Hydrazine hydrate

  • Hydrazine, monohydrate
  • Hydrazine hydroxide
  • Hydrazinium hydroxide
  • Hydrazine, aqueous solutions, with not more than 64% Hydrazine
  • Hydrazine, aqueous solution, with not less than 37% but not more than 64% Hydrazine
Formula
H2NNH2 . xH2O
Structure
Description
Clear, colorless, fuming liquid with a strong, ammonia-like odor.
Uses
An intermediate for chemical synthesis and, for example, for the production of azodicarbonamide, a blowing agent for the foaming of plastics. Foam plastics are processed in many consumer goods as for shoes, furniture and cars corrosion protection in closed water circuits. As an antioxidant, it protects pipes from rust and premature aging, particularly in the steam circuits of the power industry, Manufacture medicines, including those for the treatment of TB, forms of depression and hypertension. And for crop protection products, hydrazine is a vital intermediate for growth regulators, for instance.

Registry Numbers and Inventories.
CAS
7803-57-8
RTECS
MV4590000
RTECS class
Mutagen
UN (DOT)
2030
Beilstein/Gmelin
21307 (G)
Swiss Giftliste 1
G-4561
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
H6N2O
Formula mass
158.20
Melting point, °C
-51.7
Boiling point, °C
117.2
Vapor pressure, mmHg
5.2 (20 C)
Vapor density (air=1)
1.73
Density
1.0305 g/cm3 (21 C)
Solubility in water
Miscible
Refractive index
1.4280

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Do not store in direct sunlight. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.
B3 D1A D2A E
Handling
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Do not store in direct sunlight. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Storage under a nitrogen blanket has been recommended.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
Stable. However becomes unstable if dehydrated.
Incompatibilities
Oxidizing materials, sodium, 2,4-dinitrochlorobenzene, mercuric oxide, stannous chloride.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, ammonia and/or derivatives.

Fire.
Flash Point,°C
73
Autoignition, °C
280
Upper exp. limit, %
99.99
Lower exp. limit, %
3.5
Fire fighting
Small Fires: Dry chemical, carbon dioxide or water spray. Large Fires: Dry chemical, carbon dioxide, alcohol-resistant foam or water spray.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
3
 
 
Reactivity
3
 

Health.
Poison_Class
1
Exposure effects
Prolonged or repeated exposure may cause adverse reproductive effects. Repeated inhalation may cause chronic bronchitis. May cause fetal effects. Repeated exposure may cause sensitization dermatitis.
   Ingestion
Harmful if swallowed. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May cause liver and kidney damage. Exposure may cause anemia and other blood abnormalities.
   Inhalation
Effects may be delayed. Irritation may lead to chemical pneumonitis and pulmonary edema. May cause liver and kidney damage. May cause severe irritation of the respiratory tract with possible burns.
   Skin
Causes skin burns. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. May be absorbed through the skin.
   Eyes
Causes eye burns. Effects may be delayed.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Discard contaminated clothing in a manner which limits further exposure.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed.

Transport.
UN number
2030
Response guide
Hazard class
8
Packing Group
II