Melting point :−51.7 °C(lit.)
Boiling point :120.1 °C(lit.)
Density :1.03 g/mL at 20 °C
vapor density :>1 (vs air)
vapor pressure :5 mm Hg ( 25 °C)
refractive index :n20/D 1.428(lit.)
Flash point :204 °F
storage temp. :0-6°C
solubility :Acetonitrile (Sparingly), DMSO (Sparingly), Methanol (Slightly), Water (Sparingly)
form :fuming liquid
Specific Gravity :1.032
color :fuming liquid
PH :10-11 (10g/l, H2O, 20℃)
explosive limit :>3.4-99%(V)
Water Solubility :Soluble in chloroform, DMSO, methanol. Slightly soluble in water.
Merck :14,4771
BRN :878137
Exposure limits :ACGIH: TWA 0.01 ppm (Skin)
OSHA: TWA 1 ppm(1.3 mg/m3)
NIOSH: IDLH 50 ppm; Ceiling 0.03 ppm(0.04 mg/m3) Stability :Stability Incompatible with a wide variety of materials, including oxidizing agents, heavy metal oxides, dehydrating agents, alkali metals, rust, silver salts. Combustible. Contact with many materials may cause fire or explosive decomposition. May react explosively with a variety of materials, including dehydrating agents, heavy metal ox
InChIKey :IKDUDTNKRLTJSI-UHFFFAOYSA-N
CAS DataBase Reference :7803-57-8(CAS DataBase Reference)
EPA Substance Registry System :Hydrazine monohydrate (7803-57-8)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501 H350 May cause cancer Carcinogenicity Category 1A, 1B Danger H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.