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Ethylene glycol

Ethylene glycol

Basic Information

CAS No.: 107-21-1
Molecular Formula: C2H6O2
Molecular weight: 62.07

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Product Details

It is colorless obvious viscous liquid with candy style and moisture absorption capability. It is additionally miscible with water, low-grade aliphatic alcohols, glycerol, acetic acid, acetone, ketones, aldehydes, pyridine and comparable coal tar bases. It is barely soluble in ether however nearly insoluble in benzene and its homologues, chlorinated hydrocarbons, petroleum ether and oils.


Chemical Properties

PropertyValue

Melting point

-13 °C (lit.)

Boiling point

195-198 °C

Density

1.113 g/mL at 25 °C (lit.)

Vapor density

2.1 (vs air)

Vapor pressure

0.08 mm Hg ( 20 °C)

Refractive index

n20/D 1.431(lit.)

Fp

230 °F

Storage temp.

2-8°C

Solubility

Water: miscible

Form

Viscous Liquid

Pka

14.22(at 25℃)

Color

Blue

Relative polarity

0.79

PH

6-7.5 (100g/l, H2O, 20℃)

Odor

Odorless

Explosive limit

3.2%(V)

Water Solubility

Miscible

FreezingPoint

-11.5℃

Sensitive

Hygroscopic

λmax

λ: 260 nm Amax: ≤0.03λ: 280 nm Amax: ≤0.01

Merck

14,3798

BRN

505945

Exposure limits

Ceiling limit in air for vapor and mist 50 ppm (~125 mg/m3) (ACGIH); TWA 10 mg/m3 (particulates) (MSHA).

Dielectric constant

37.0(20℃)

LogP

-1.36 at 25℃

CAS DataBase Reference

107-21-1(CAS DataBase Reference)

NIST Chemistry Reference

1,2-Ethanediol(107-21-1)

EPA Substance Registry System

Ethylene glycol (107-21-1)


Safety Information

PropertyValue

Hazard Codes

Xn

Risk Statements

22-36-41

Safety Statements

26-39-36/37/39

WGK Germany

3

RTECS

KW2975000

Autoignition Temperature

752 °F

TSCA

Yes

HS Code

29053100

Hazardous Substances Data

107-21-1(Hazardous Substances Data)

Toxicity

LD50 in rats, guinea pigs (g/kg): 8.54, 6.61 orally (Smyth); in mice (ml/kg): 13.79 orally (Bornmann)


Product Usage

Ethylene glycol is a colorless, odorless, and sweet-tasting liquid primarily valued for its dual functionality as a coolant and a chemical precursor. Its most widespread application is as the primary ingredient in automotive antifreeze and coolants, where it lowers the freezing point and raises the boiling point of engine fluids. In the plastics industry, it is a critical raw material for producing polyethylene terephthalate (PET), used for beverage bottles and polyester fibers. Additionally, it serves as an effective de-icing agent for aircraft and runways and acts as a humectant in the textile and paper industries.

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