Name | Trimethylamine |
Synonyms | Trimethylamine Trimethylamine anhydrous trimethylamine 2M in THF TriMethylaMine, 2.0 M solution in THF, SpcSeal TriMethylaMine, 2.0 M solution in ethanol, SpcSeal |
CAS | 75-50-3 |
EINECS | 200-875-0 |
InChI | InChI=1S/C3H9N/c1-4(2)3/h1-3H3 |
InChIKey | GETQZCLCWQTVFV-UHFFFAOYSA-N |
Molecular Formula | C3H9N |
Molar Mass | 59.11 |
Density | 0.63 g/mL at 20 °C (lit.) |
Melting Point | -117 °C (lit.) |
Boling Point | 3-4 °C (lit.) |
Flash Point | 38°F |
JECFA Number | 1610 |
Water Solubility | Soluble In Water, 8.9e+005 mg/L. |
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) |
Vapor Presure | 430 mm Hg ( 25 °C) |
Vapor Density | 2.09 (vs air) |
Appearance | Liquid |
Color | Colorless |
Odor | smelling like rotting fish, rotting eggs, garbage, or urine. |
Exposure Limit | 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) |
Merck | 14,9710 |
BRN | 956566 |
pKa | pKb (25°): 4.13 |
PH | a strong base (pH 9.8) |
Storage Condition | Store at +5°C to +30°C. |
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. Hygroscopi |
Sensitive | Hygroscopic |
Explosive Limit | 11.6% |
Refractive Index | n20/D 1.357 |
Physical and Chemical Properties | Anhydrous is a colorless liquefied gas, with the smell of fish and ammonia. |
Use | For pesticides, dyes, pharmaceuticals and Organic synthesis |
Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R34 - Causes burns R20/22 - Harmful by inhalation and if swallowed. R12 - Extremely Flammable R41 - Risk of serious damage to eyes R37/38 - Irritating to respiratory system and skin. R20 - Harmful by inhalation R11 - Highly Flammable |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S16 - Keep away from sources of ignition. S29 - Do not empty into drains. S39 - Wear eye / face protection. S3 - Keep in a cool place. |
UN IDs | UN 2924 3/PG 2 |
WGK Germany | 1 |
RTECS | YH2700000 |
FLUKA BRAND F CODES | 3-10 |
TSCA | Yes |
HS Code | 29211100 |
Hazard Class | 3 |
Packing Group | II |
Raw Materials | Nitrogen Ammonia Methyl alcohol Methyl alcohol Ammonia |
The anhydrous substance of this product is colorless liquefied gas. There is a fishy ammonia odor. Soluble in water, ethanol and ether. Easy to burn, the vapor and air to form an explosive mixture, the explosion limit of 2%~ 11.6%. Spontaneous ignition point 190. Relative density (d20) 0.632. Freezing point -117.1 °c. Boiling point 2.9 °c. Flash point (closed Cup)-6.67 °c. The critical temperature is 161. The heat of combustion was 2357kJ/mol. The critical pressure was 4.154kPa. Refractive index 3449. The boiling point of a 40% aqueous solution of trimethylamine is 26.0 °c. Flash 30% industrial trimethylamine aqueous solution HGlT 1999 point -17. 78 °c. Relative density (d45'5) 0.827. Vapor pressure (20 °c) 52. 662kPa.
The crude mixed methylamine was prepared by the reaction of methanol and ammonia (1:2.5) at high temperature (420 ℃) and high pressure (4900kPa) with activated alumina as catalyst, trimethylamine was obtained by fractionation.
This product is used as disinfectant, alarm agent of natural gas, analytical reagent and raw material of organic synthesis. Also used as pharmaceuticals, pesticides, photographic materials, rubber additives, explosives, chemical fiber solvents, surfactants and dyes of raw materials.