Item

Unit

Specification

Appearance

/

White crystalline powder

Clarity

/

Clear

Colour

/

Y6

Acidity or Alkalinity

ml/g

0.25 max

Ionised Chlorine

ppm

200 max

Total Chlorine

ppm

300 max

Heavy Metals          (In terms of lead)

ppm

10 max

Arsenic

ppm

3 max

Lead

ppm

2 max

Mercury

ppm

1 max

Readily Oxidisable Subst Ances

/

Positve

Polycyclic Acids

/

Positive

Loss on Drying

%(m/m)

1.5 max

Assay

%(m/m)

99.0-100.5