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

92-97.5%

95%

4

Acid-insoluble   substances     酸不溶物

≤2.5-0.10%

0.10%

5

Water content   水分

≤2.5-0.5%

0.5%

6

Sulfate硫酸盐（SO₄^2-）

——

0.10%

7

Chloride氯化物（Cl^- ）

≤0.50-0.10%

0.10%

8

Calcium钙(Ca)

≤1-0.1%

0.08%

9

Iron铁(Fe)

≤0.3-0.05%

0.005%

10

Lead铅(Pb)

——

——

11

Arsenic砷（As）

——

——

12

Sieve residue 筛余物（75μm）

1.0%

0.05%

13

Loss on ignition灼烧失重

≥30%

32.6%

14

Density堆积密度

——

0.55g/ml

Conclrsion   结论

The above product   conforms to HG/T3607-2007.

执行标准：HG/T3607-2007。