Potassium Hypophosphite

Grades

BPC

NF

Solubility

1 part dissolves in 1 part water and 7.5 parts of alcohol

1.0 gm dissolves in 0.6 ml water and 9.0 ml alcohol

Identification

Should give characteristic reactions for Potassium and Hypophosphite

Should give characteristic reactions for Potassium and Hypophosphite

Description

White, opaque, granular, crystalline powder very deliquescent in air. Odourless and pungent, salty taste.

White, opaque, granular, crystalline powder very deliquescent in air. Odourless and pungent, salty taste.

Alkalinity

Not more than 1.5 ml of 0.1N HCl is required to neutralize

Not more than 1.5 ml of 0.1N HCl is required to neutralize

Heavy Metals

-

Max 20 ppm

Arsenic

Not More than 4 ppm

Complies to Limit Test

Lead

Not More than 10 ppm

-

Phosphite

No Precipitates produced

-

Sodium

No Precipitates produced

-

Phosphate

No opalescence produced

No Precipitation within 1 min.

Loss on Drying

Not More than 2 % at 105oC

Not More than 5 % at 105oC for 1 hours

Calcium

-

No Turbidity in 1 min.

Assay

98.0 % to 101.0 %

Not less than 97.0%