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Triethylamine

Name: Triethylamine
SKU: 0

Triethylamine
CAS No.: 121-44-8
Molecular Formula: C6H15N
Molecular weight: 101.19

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PRODUCT DESCRIPTION

Triethylamine (molecular formula: C6H15N), also known as N,N-diethylethylamine, is the simplest homotrisubstituted tertiary amine. It has the typical properties of tertiary amines, including salt formation and oxidation. Triethylamine has no reaction in the Hisberg reaction. It is a colorless to light yellow transparent liquid with a strong ammonia odor and a slight smoke in the air. Boiling point: 89.5℃, relative density (water = 1): 0.70, relative density (air = 1): 3.48, slightly soluble in water, soluble in ethanol and ether. The aqueous solution is alkaline. It is flammable, and its vapor can form an explosive mixture with air, with an explosion limit of 1.2% to 8.0%. It is toxic and highly irritating.

Chemical Properties

Property	Value
Melting point	-115 °C
Boiling point	90 °C
Density	0.728
Vapor density	3.5 (vs air)
Vapor pressure	51.75 mm Hg ( 20 °C)
Refractive index	n20/D 1.401(lit.)
FEMA	4246 \| TRIETHYLAMINE
Fp	20 °F
Storage temp.	Store below +30°C.
Solubility	Water: soluble112g/L at 20°C
Pka	10.75(at 25℃)
Form	Liquid
Specific Gravity	0.725 (20/4℃)
Color	Clear
PH	12.7 (100g/l, H2O, 15℃)(IUCLID)
Relative polarity	1.8
Odor	Strong ammonia-like odor
Odor Type	Fishy
Odor Threshold	0.0054ppm
Explosive limit	1.2-9.3%(V)
Water Solubility	133 g/L (20 ºC)
Merck	14,9666
JECFA Number	1611
BRN	1843166
Henry's Law Constant	1.79 at 25 °C (Christie and Crisp, 1967)
Exposure limits	NIOSH REL: IDLH 200 ppm; OSHA PEL: TWA 25 ppm (100 mg/m3); ACGIH TLV: TWA 1 ppm, STEL 3 ppm (adopted).
Dielectric constant	5.0（Ambient）
Stability	Stable. Extremely flammable. Readily forms explosive mixtures with air. Note low flash point. Incompatible with strong oxidizing agents, strong acids, ketones, aldehydes, halogenated hydrocarbons.
InChIKey	ZMANZCXQSJIPKH-UHFFFAOYSA-N
LogP	1.65
CAS DataBase Reference	121-44-8(CAS DataBase Reference)
NIST Chemistry Reference	Triethylamine(121-44-8)
EPA Substance Registry System	Triethylamine (121-44-8)

Safety Information

Property	Value
Hazard Codes	F,C
Risk Statements	11-20/21/22-35
Safety Statements	3-16-26-29-36/37/39-45-61
RIDADR	UN 1296 3/PG 2
WGK Germany	1
RTECS	YE0175000
F	34
Autoignition Temperature	593 °F
Hazard Note	Highly Flammable/Corrosive
TSCA	Yes
HazardClass	3
PackingGroup	II
HS Code	29211910
Hazardous Substances Data	121-44-8(Hazardous Substances Data)
Toxicity	LD50 orally in rats: 0.46 g/kg (Smyth)
IDLA	200 ppm

Product Usage

Triethylamine (TEA) is one of the most commonly used organic bases in the chemical industry, valued for its strong alkalinity and liquid state. Its primary application is as an acid acceptor and catalyst in organic synthesis, particularly in the production of pesticides, pharmaceuticals, and synthetic resins. In the foundry industry, it acts as a high-efficiency hardening catalyst for sand cores in the cold-box process. Furthermore, it is a critical raw material for manufacturing quaternary ammonium compounds and serves as a neutralizing agent in the production of water-based coatings and adhesives, enhancing their stability and solubility.

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