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Triethylamine

Triethylamine

Basic Information

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

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Product Details

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

PropertyValue

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

PropertyValue

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.

Factory Showcase

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Shipping And Transportation

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