Hydrazine

H₄N₂CAS 302-01-232.05 g/mol

Open in Covalent MOL file

Primary amine

Properties

Molecular formula: H₄N₂
Molar mass: 32.05 g/mol
Exact mass: 32.0374 Da
Density: 1.146 g/mL (at −5 °C)
Melting point: 2 °C
Boiling point: 113.5 °C
pKa: 7.96
Water solubility: miscible
logP: -1.18Crippen estimate
Polar surface area: 52.0 Å²
H-bond donors / acceptors: 2 / 2
Rotatable bonds: 0

Hazards

Danger

H226 Flammable liquid and vaporFlammable liquids
H301 Toxic if swallowedAcute toxicity, oral
H311 Toxic in contact with skinAcute toxicity, dermal
H314 Causes severe skin burns and eye damageSkin corrosion/irritation
H317 May cause an allergic skin reactionSensitization, Skin
H331 Toxic if inhaledAcute toxicity, inhalation
H350 May cause cancerCarcinogenicity
H400 Very toxic to aquatic lifeHazardous to the aquatic environment, acute hazard
H410 Very toxic to aquatic life with long lasting effectsHazardous to the aquatic environment, long-term hazard

Harmonised EU classification (CLP Annex VI, index 007-008-00-3), via PubChem.

Precautionary statements

P203, P210, P233, P240, P241, P242, P243, P260, P261, P262, P264, P270, P271, P272, P273, P280, P301+P316, P301+P330+P331, P302+P352, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P318, P321, P330, P333+P317, P361+P364, P362+P364, P363, P370+P378, P391, P403+P233, P403+P235, P405, P501