Test Description

Specification Limits

Min. Max.

Unit  of Measure

Test  Method

Dipropylene Glycol, on a dry basis

99.5

%(w/w)

Acidity as acetic acid

0.01

%(w/w)

Propylene Glycol

0.2

%(w/w)

Chlorides

1

ppm

Colour, Pt-Co

10

Iron

0.5

ppm

Water

0.1

%(w/w)

Distillation @ 760 mm Hg

Initial Boiling Point

228

^oC

Drying Point

236

^oC

Refractive Index @25 ^oC

1.4387

1.4393

Residue on Ignition

0

0.005

%(w/w)

Specific Gravity@20/20 ^oC

1.02

1.025