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Hydrazine hydrate
Hydrazine hydrate
- CAS:
- 7803-57-8
- MF:
- H6N2O
- MW:
- 50.06
Properties
- 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
- n
20/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
Safety Information
- Symbol(GHS)
GHS02,GHS05,GHS06,GHS08,GHS09
- Signal word
- Danger
- Hazard statements
- H226-H301+H311-H314-H317-H330-H350-H410
- Precautionary statements
- P210-P273-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
- Hazard Codes
- T,N
- Risk Statements
- 45-20/21/22-34-43-51/53-50/53-23/24/25-10
- Safety Statements
- 53-45-60-61-36/37/39-26
- RIDADR
- UN 3293 6.1/PG 3
- WGK Germany
- 3
- RTECS
- MV8050000
- F
- 23
- Autoignition Temperature
- 280 °C
- TSCA
- Yes
- HazardClass
- 8
- PackingGroup
- II
- HS Code
- 28251000
- Toxicity
- LD50 orally in Rabbit: 169 mg/kg
Use
Hydrazine hydrate is prepared by treating hydrazine sulfate, N2H4H2SO4 with sodium hydroxide. The product is collected by distillation under nitrogen. It also is obtained as a by-product in the Bayer Ketazine process for producing hydrazine in which hydrazine solution is hydrolysed under pressure in a ketazine column.
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