Calcium Carbonate Powder

Test and Method

Specification

Identification A(BP/EP/IP)

It gives the reaction of carbonates (2.3.1) .

Identification A(USP)

The addition of acetic acid to it produces effervescence (presence of carbonate)

Identification B(BP/EP/IP)

0.2 ml of solution S (see Tests) gives the reactions of calcium (2.3.1)

Identification B(USP)

the resulting solution, after boiling, responds to the tests for Calcium .

Chloride(BP/EP)

Max 330 ppm

Chloride(IP)

NMT 250ppm

Sulphates(BP/EP)

Max0.25%

Sulphates(IP)

NMT 0.3%

Substance insoluble in Acetic Acid(BP/EP/IP)

Max 0.2%

Acid-insoluble substances(USP)

NMT 0.2%

Arsenic(BP/EP/IP)

Max 4 ppm

Arsenic(USP)

NMT 3 ppm

Iron(BP/EP/IP)

Max 200 ppm

Iron(USP)

NMT 0.1%

Magnesium and Alkali metals(BP/EP)

Max 1.5%

Magnesium and Alkali Salts(USP)

NMT 1.0% Max

Magnesium and Alkali metals(IP)

NMT 10 %

Loss on Drying(BP/EP/IP)

Max 2.0%

ASSAY(BP)

98% CaCO3

ASSAY(EP/IP/USP)

98.5-100.5%