Magnesium oxide

White Fine Powder

Soluble in dilute acid and ammonium   salt solution, almost insoluble in water and ethanol. Easy to absorb carbon   dioxide in the air.

Food and medicine industry; Inorganic   flame retardant industry; Rubber and plastic industry of environmental   protection industry; Fine chemical industry, etc.

1

Descriptipon性状

White powder白色粉末

Complies

2

Identification鉴别

Positivetest for

Magnesium

呈镁盐的鉴别反应

Complies

3

Assay主含量

98.0--100.5%

99.5%

4

Acid-insoluble   substances     酸不溶物

≤0.10%

0.05%

5

Solulbe substances          可溶性盐

≤2.0%

0.5%

6

Sulfate硫酸盐（SO₄^2-）

≤0.50%

0.08%

7

Chloride氯化物（Cl^- ）

≤0.10%

0.06%

8

Heavy Metal重金属

≤20ppm

5ppm

9

Arsenic砷（As）

≤2ppm

ND

10

Lead铅(Pb)

≤2ppm

＜1ppm

11

Calcium钙(Ca)

≤1.5%

0.08%

12

Iron铁(Fe)

≤0.05%

0.005%

13

Loss on ignition灼烧失重

30-32.5%

31.2%

14

Density堆积密度

0.60g/ml

15

Toatl Aerobic Plate Count       菌落总数

＜1000cfu/g

Complies

16

Mold & yeasts               霉菌、酵母菌

＜80cfu/g

Complies

17

Escherichia coli              大肠杆菌

Negative          不得检出

ND

Conclrsion   结论

The above product   conforms to USP,FCC.

执行标准 ：USP,FCC。