4771. Hydrazine Hydrate

Nomenclature

CAS number: 7803-57-8
H6N2O; mol wt 50.06.
H 12.08%, N 55.96%, O 31.96%.
H2NNH2.H2O.

Description and references

Prepd from hydrazine sulfate by the action of NaOH, followed by distn under nitrogen.

Properties

Fuming refractive liquid, faint characteristic odor. Poisonous. d21 1.03. mp 51.7° or below 65° (two eutectics). bp740 118-119°; bp26 47°. nD20 1.42842. Strong base, very corrosive, attacks glass, rubber, cork, but not stainless V2A steel or Allegheny stainless 304 and 347. Molybdenum steels such as Allegheny stainless 316 should not be used. Very powerful reducing agent. Miscible with water and alcohol. Insol in chloroform and ether.

Derivative

Mixture with methanol.

Nomenclature

C-Stuff.

Caution

Causes delayed eye irritation.

Use

Reducing agent, solvent for inorganic materials. Manuf “Helman” catalyst, consisting of 80% hydrazine hydrate, 19.5% ethanol, 0.5 to 0.05% copper, used to dec hydrogen peroxide in V-2 type rockets. Mixture with methanol as propellant for rocket engines.