Home Categories Organic Chemistry Trimethylamine solution
A7708412

Trimethylamine solution , AR,30wt.%inH2O , 75-50-3

CAS NO.:75-50-3

Empirical Formula: C3H9N

Molecular Weight: 59.11

MDL number: MFCD00012478

EINECS: 200-875-0

Update time: 2022-07-08

PRODUCT Properties

Melting point: -117 °C (lit.)
Boiling point: 3-4 °C (lit.)
Density  0.63 g/mL at 20 °C (lit.)
vapor density  2.09 (vs air)
vapor pressure  430 mm Hg ( 25 °C)
refractive index  n20/D 1.357
FEMA  3241 | TRIMETHYLAMINE
Flash point: 38 °F
storage temp.  Store at +5°C to +30°C.
solubility  very soluble in water, slightly soluble in alcohol, ether, benzene, toluene, xylene, ethylbenzene, chloroform maximum allowable concentration: TLV 10 p.p.m. (24 mg/m3) and STEL of 15 p.p.m. (36 mg/m3) (ACGIH 1986)
form  Liquid
pka pKb (25°): 4.13
color  Colorless
PH a strong base (pH 9.8)
Odor smelling like rotting fish, rotting eggs, garbage, or urine.
Odor Threshold 0.000032ppm
explosive limit 11.6%
Odor Type fishy
Water Solubility  Soluble In Water, 8.9e+005 mg/L.
FreezingPoint  -117.1℃
Sensitive  Hygroscopic
Merck  14,9710
JECFA Number 1610
BRN  956566
Dielectric constant 2.9(4℃)
Exposure limits ACGIH: TWA 50 ppm; STEL 100 ppm (Skin)
OSHA: TWA 200 ppm(590 mg/m3)
NIOSH: IDLH 2000 ppm; TWA 200 ppm(590 mg/m3); STEL 250 ppm(735 mg/m3)
Stability: Stable. Incompatible with a wide variety of materials, including bases, acids, oxidizing agents, brass, zinc, magnesium, aluminium, mercury, mercury oxides, acid chlorides, acid anhydrides. Hygroscopic. Highly flammable. Readily forms explosive mixtures with air.
InChIKey GETQZCLCWQTVFV-UHFFFAOYSA-N
LogP 0.06

Description and Uses

Trimethylamine is used as a warning agent for natural gas, a synthetic flavor (fish) ingredient, and in the synthesis of photochemicals, choline salts, flotation agents, dyes, pesticides, ion-exchange resins, cationic starches, and intense sweeteners (HSDB 2006).
Organic synthesis, especially of choline salts, warning agent for natural gas, manufacture of disinfectants, flotation agent, insect attractant, quaternary ammonium compounds, plastics.

Safety

Symbol(GHS) 
GHS02,GHS05,GHS07
Signal word  Danger
Hazard statements  H225-H302-H314-H335
Precautionary statements  P210-P233-P280-P301+P312-P303+P361+P353-P305+P351+P338
Hazard Codes  Xi,C,F+,Xn,F
Risk Statements  36/37/38-34-20/22-12-41-37/38-20-11
Safety Statements  26-36-45-36/37/39-16-29-39-3
OEB A
OEL TWA: 10 ppm (24 mg/m3), STEL: 15 ppm (36 mg/m3)
RIDADR  UN 2924 3/PG 2
WGK Germany  1
RTECS  YH2700000
3-10
Autoignition Temperature 374 °F
TSCA  Yes
DOT Classification 2.1 (Flammable gas)
HazardClass  3
PackingGroup  II
HS Code  29211100

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