Calcium Hypophosphite

Grades

BPC

NF X     

Description

A white powder or lustrous crystals ; odourless ; taste nauseous and bitter

Colorless, transparent, monoclinic prisms as small lustrous scales, or as a white crystalline powder. Odorless ; taste nauseous and bitter

Identification

It gives reactions characteristic of calcium

Responds to tastes for calcium and for hypophosphite 

Solubility

Soluble in 7 parts of water, insoluble in alcohol

Dissolve slowly in water, insoluble in alcohol 

Acidity

Max 0.5 ml of N/10  sodium hydroxide is required for neutralization

Max 1 ml of 0.1 N sodium hydroxide is required for neutralization

Arsenic

Not more than 4 parts per million

The residue meets the requirements

Lead

Not more than 10 parts per million

-

Barium

No turbidity or precipitate is produced

-

Heavy Metals

-

20 parts per million

Phosphate

Max 0.5%

-

Phosphite

No precipitate is formed

-

Phosphorous Compounds

-

No offensive odor is developed

Water insoluble substances

-

Max 5 mg

Incompatibility

Incompatible with oxidizing agents, and with ferric ammonium citrate

-

Loss on drying

-

Max 3%

Assay Dry Basis

98.0 % to 101.0%

Not less than 98%