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1,1-Dimethylhydrazine Structure

1,1-Dimethylhydrazine

Chemical Properties

Melting point -57.2 °C
Boiling point 60-62 °C(lit.)
Density  0.79 g/mL at 20 °C(lit.)
vapor density  1.94 (vs air)
vapor pressure  103 mm Hg ( 20 °C)
refractive index  n20/D 1.4075(lit.)
Flash point 34 °F
storage temp.  2-8°C
solubility  Miscible with alcohol, N,N-dimethylformamide, ether, hydrocarbons (Windholz et al., 1983), and many other polar solvents.
pka 8.19±0.18(Predicted)
form  Colorless liquid
explosive limit 95%
Water Solubility  miscible
Sensitive  Hygroscopic
Merck  14,3247
BRN  605261
Henry's Law Constant 2.45(x 10-9 atm?m3/mol) at 25 °C (quoted, Mercer et al., 1990)
Exposure limits TLV-TWA skin 0.5 ppm (1.0 mg/m3 ) (ACGIH, MSHA, and OSHA); carcinogenicity: Animal Sufficient Evidence (IARC), Suspected Carcinogen (ACGIH).
CAS DataBase Reference 57-14-7(CAS DataBase Reference)
NIST Chemistry Reference Hydrazine, 1,1-dimethyl-(57-14-7)
IARC 2B (Vol. 4, Sup 7, 71) 1999
EPA Substance Registry System 1,1-Dimethylhydrazine (57-14-7)

Safety Information

Hazard Codes  F,T,N
Risk Statements  45-11-23/25-34-51/53-37-23/24/25
Safety Statements  53-45-61-36/37
RIDADR  UN 1163 6.1/PG 1
WGK Germany  3
RTECS  MV2450000
Autoignition Temperature 478 °F
HazardClass  6.1
PackingGroup  I
HS Code  29280090
Hazardous Substances Data 57-14-7(Hazardous Substances Data)
Toxicity Acute oral LD50 for rats 122 mg/kg, mice 265 mg/kg (quoted, RTECS, 1985).
IDLA 15 ppm

MSDS

Usage And Synthesis