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Topic summary

Dimethylamine

Names Preferred IUPAC name
N-Methylmethanamine
Other names
(Dimethyl)amine
Identifiers
3D model (JSmol)
Abbreviations DMA
Me2NH 605257 ChEBI
ChEMBL
ChemSpider
ECHA InfoCard100.004.272EC Number
  • 204-697-4
849 KEGG
MeSHdimethylamine
RTECS number
  • IP8750000
UNII
UN number1032
  • InChI=1S/C2H7N/c1-3-2/h3H,1-2H3
    Key: ROSDSFDQCJNGOL-UHFFFAOYSA-N
  • CNC
Properties C2H7NMolar mass45.085 g·mol Appearance Colorless gas OdorFishy, ammoniacal Density649.6 kg m (at 25 °C) Melting point−93.00 °C; −135.40 °F; 180.15 K Boiling point7 to 9 °C; 44 to 48 °F; 280 to 282 K 1.540 kg L log P−0.362 Vapor pressure170.3 kPa (at 20 °C) 310 μmol Pa kg Basicity (pKb) 3.29 Thermochemistry −21 to −17 kJ mol Hazards GHS labelling: DangerH220, H302, H315, H318, H332, H335P210, P261, P280, P305+P351+P338NFPA 704 (fire diamond)
2
4
0
Flash point−6 °C (21 °F; 267 K) (liquid) 401 °C (754 °F; 674 K) Explosive limits2.8–14.4% Lethal dose or concentration (LD, LC): 698 mg/kg (rat, oral)
316 mg/kg (mouse, oral)
240 mg/kg (rabbit, oral)
240 mg/kg (guinea pig, oral) 4700 ppm (rat, 4 hr)
4540 ppm (rat, 6 hr)
7650 ppm (mouse, 2 hr) NIOSH (US health exposure limits):
PEL (Permissible)
TWA 10 ppm (18 mg/m)
REL (Recommended)
TWA 10 ppm (18 mg/m)
IDLH (Immediate danger)
500 ppm Related compounds
Related amines
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Dimethylamine is an organic compound with the formula (CH3)2NH. This secondary amine is a colorless, flammable gas with an ammonia-like odor. Dimethylamine is commonly encountered commercially as a solution in water at concentrations up to around 40%. An estimated 271,000 tons were produced in 2005.

Wikipedia source