Item

Standard

Description

White or transparent crystals

Solubility

Pass test

Clarity & Color Solution

Clear

Content 

99.5%101.0%

Sulphate

≤150ppm

Oxalate

≤100ppm

Heavy Metal (as Pb)

≤10ppm

Barium 

Pass  

Calcium

≤200ppm

Iron

≤50ppm

Chloride

≤50ppm

Sulphated ash

≤0.1%

Water

7.5%9.0%

Readily carbonisable substances

Not darker than the standard

Lead

≤1ppm

AS

≤1ppm

Mercury

≤1ppm

Aluminium 

≤0.2ppm

Bacteriaendotoxic 

≤0.5IU/mg