S.No

     STANDARDS

SPECIFICATION

1

APPEARANCE

White Crystalline

Powder , Odourless .

2

SOLUBILITY

 Practically insoluble in water and alcohol, soluble in dil. Hcl, & Nitric Acid

3

CARBONATE

Absent

4

IRON AS Fe

400 PPM Max.

5

ACID INSOLUBLES

0.1% Max

6

HEAVY METALS (Pb)

40 PPM Max.

7

ARSENIC (As203)

10 PPM Max.

8

Chlorides

330 PPM Max.

9

Sulphate

0.5% Max

10

MCP & TCP

11 – 12.5 ml

11

CALCIUM

30.9% - 31.7%

12

ASSAY

98 – 105%

13

LOSS ON DRYING  at 60 Deg.C

1.0% Max.

14

pH ( 20% Slurry )

6 to 7

15

LOSS ON IGNITION at 800 Deg. C

24.5 – 26.5%

16

Flouride

100 PPM Max.

Microbial Tests :

01

Total Bacterial Count

100 cfu/gm Max.

02

Moulds / Yeasts

 50 cfu/gm Max.