Tests

Standards

Description

A colourless or almost colourless viscous liquid;
Odour,slightly characteristic.
Freely soluble in water and ethanol, insoluble in ether

Congealing point℃

4-8

Relative density

1.110-1.140

Viscosity (40℃,mm²/s)

37-45

Identification

Should comply with the standards

Average molecular weight

380-420

pH

4.0-7.0

Clarity and color of solution

Should comply with the standards

Ethylene Glycol, Diglycol and
Triethylene glycol

Each not more than 0.1%

Ethylene oxide and Dioxane

Ethylene oxide not more than 0.0001%

Dioxane not more than 0.001%

Formaldehyde

Not more than 0.003%

Water

Not more than 1.0%

Residue on ignition

Not more than 0.1%

Heavy metals

Not more than 0.0005%

Arsenic

Not more than 0.0003%

Microbial limit

Total Aerobic Microbial Count

Total Yeasts and Molds Count

Escherichia coli should be absent

The sample is qualified with the requirements of C.P. 2015