Hydrazine
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 Hydrazine hydrate
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| Names | |||
|---|---|---|---|
| Seestematic IUPAC name
Hydrazine[2] | |||
| Ither names | |||
| Identifiers | |||
3D model (JSmol)
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| 3DMet | B00770 | ||
| 878137 | |||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| EC Nummer | 206-114-9 | ||
| Gmelin Reference | 190 | ||
| KEGG | |||
| MeSH | Hydrazine | ||
PubChem CID
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| RTECS nummer | MU7175000 | ||
| UNII | |||
| UN nummer | 2029 | ||
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| Properties | |||
| N 2H 4 | |||
| Molar mass | 32.0452 g mol-1 | ||
| Appearance | Colourless liquid | ||
| Density | 1.021 g cm-3 | ||
| Meltin pynt | 2 °C; 35 °F; 275 K | ||
| Bylin pynt | 114 °C; 237 °F; 387 K | ||
| log P | 0.67 | ||
| Vapour pressur | 1 kP (at 30.7 °C) | ||
| Acidity (pKa) | 8.10[3] | ||
| Basicity (pKb) | 5.90 | ||
| Refractive index (nD) | 1.46044 (at 22 °C) | ||
| Viscosity | 0.876 cP | ||
| Structur | |||
| Molecular shape | Triangular pyramidal at N | ||
| 1.85 D[4] | |||
| Thermochemistry | |||
| Staundart molar entropy S |
121.52 J K-1 mol-1 | ||
| Std enthalpy o formation ΔfH |
50.63 kJ mol-1 | ||
| Hazards | |||
| GHS pictograms |     
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| GHS signal wird | DANGER | ||
| GHS hazard statements | H226, H301, H311, H314, H317, H331, H350, H410 | ||
| GHS precautionary statements | P201, P261, P273, P280, P301+310, P305+351+338 | ||
| NFPA 704 | |||
| Flash pynt | 52 °C | ||
| Explosive leemits | 1.8–99.99% | ||
| Lethal dose or concentration (LD, LC): | |||
LD50 (Median dose)
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59–60 mg/kg (oral in rats, mice)[6] | ||
| Relatit compoonds | |||
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa). | |||
 verify (whit is   ?)
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| Infobox references | |||
Hydrazine (an aa cried diazane) is an inorganic compoond wi the formula N2H4. It is a colourless flammable liquid wi an ammonia-like odor. Hydrazine is heichly toxic an dangerously unstable unless haundled in solution. As o 2002[update], approximately 260,000 tons wur manufactured annually.[7] Hydrazine is mainly uised as a faemin agent in preparin polymer faems, but significant applications an aa include its uises as a precursor tae polymerization catalysts an pharmaceuticals. Addeetionally, hydrazine is uised in various rocket fuels an tae prepare the gas precursors uised in air bags. Hydrazine is uised within baith nuclear an conventional electrical pouer plant steam cycles as an oxygen scavenger tae control concentrations o dissolved oxygen in an effort tae reduce corrosion.
References[eedit | eedit soorce]
- ↑ "NIOSH Guide - Hydrazine". Centers for Disease Control. Retrieved 16 August 2012.
- ↑ a b "hydrazine - PubChem Public Chemical Database". The PubChem Project. USA: National Center for Biotechnology Information.
- ↑ Hall, H.K., J. Am. Chem. Soc., 1957, 79, 5441.
- ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth–Heinemann. ISBN 0080379419.
- ↑ "Hydrazine safety data sheet".
- ↑ Martel, B.; Cassidy, K. (2004). Chemical Risk Analysis: A Practical Handbook. Butterworth–Heinemann. p. 361. ISBN 1-903996-65-1.CS1 maint: multiple names: authors leet (link)
- ↑ Jean-Pierre Schirmann, Paul Bourdauducq "Hydrazine" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2002. doi:10.1002/14356007.a13_177.