Number  

Item

Specification

Results

1

Description

Fine, white, microcrystalline powder, odorless

Pass

2.A

Identification (CO 3 2- )

Meet the requirements of the USP test for carbonate

Pass

2.B

Identification(Ca 2+ )

Meet the requirements of the USP test for calcium

Pass

3

Loss on Drying

≤ 2.0%

0.079%

4

Acid Insolubles substances

≤ 0.2%

<0.2%

5

Limit of Fluoride

≤ 0.005%

<0.005%

6

Arsenic

≤ 0.0003%

<0.0002%

7

Barium  

Meet the requirements of the USP test for Barium

Pass

8

Lead

≤ 0.0003%

<0.0002%

9

Heavy Metals

≤ 0.002%

<0.002%

10

Limit of Magnesium and Alkali Salts

≤ 1.0%

<1.0%

11

Assay ( Caco3)

98.0-100.5%

99.04%

12

Iron

≤ 0.1%

<0.04%

13

Mercury

≤ 0.00005%

<0.00005%