Magnesium oxide

White Fine Powder

Magnesium oxide is easy to   absorb water and carbon dioxide when exposed to air. Very soluble in dilute   acid, very slightly soluble in pure water, insoluble in ethanol.

Food and medicine industry;   Fine chemical industry; Electronic glass and ceramics industry; Rubber and   plastic industry; Catalyst industry, etc.

1

Descriptipon性状

Fine,white,almost   white powder白色粉末，无黑点和其它杂质

Complies

2

Identification鉴别

Positivetest   for

Magnesium

呈镁盐的鉴别反应

Complies

3

Assay主含量

96.0%--100.5%

99.45%

4

Acid-insoluble   substances     酸不溶物

≤0.1%

0.05%

5

Solulbe substances          可溶性盐

≤2.0%

0.5%

6

Free Alkai游离碱

≤2.0ml

1.0ml

7

Loss on ignition灼烧失重

≤10.0%

0.4%

8

Heavy Metal重金属

≤40ppm

<10ppm

9

Arsenic砷

≤5ppm

ND

10

Lead铅

≤1.5ppm

＜1ppm

11

Calcium钙

≤1.1%

0.06%

12

Iron铁

≤0.05%

0.003%

13

Density堆积密度

0.32g/ml

14

Particle   size(75um)

≥98%

100%

15

Toatl Aerobic Plate Count       菌落总数

＜1000cfu/g

Complies

16

Escherichia coli              大肠杆菌

＜3.0MPN/g

ND

Conclrsion

The above product   conforms to GB1886.216-2016，USP41，CP2010.