娇妻在客厅被朋友玩得呻吟动漫,一本一本久久A久久精品综合麻豆,日日躁夜夜躁狠狠躁超碰97,A毛片终身免费观看网站,少妇扒开双腿让我看个够,亚洲加勒比少妇无码av,亚洲欧美日本久久综合网站,久久这里只有精品首页,国产高清无套内谢,人人揉人人捏人人添

shape-img
shape-img
shape-img
shape-img
shape-img
shape-img
shape-img
shape-img
shape-img
shape-img
shape-img
shape-img
Magnesium Fluoride


Magnesium FluorideMagnesium FluorideMagnesium Fluoride

English Name:Magnesium Fluoride

Molecular formula:MgF2

Grade:Industrial

CAS Number:7783-40-6

Color:White

Uses:It is mainly used as an additive for electrolytic aluminum, as an assistant solvent for manufacturing ceramic glass and ferrous magnesium, as a coating for optical instrument lens and filter, as a fluorescent material for cathode-ray screen, as an optical-lens counter refractor and welding agent, as a coating agent for titanium pigment.

Physical and chemical properties:White crystalline powder, slightly soluble in water, soluble in nitric acid, insoluble in ethanol.The relative density is 3.148g/m3, the melting point is 1263℃, and the boiling point is 2239℃.

Packing specification:Plastic woven bags with plastic mulch and lined with plastic film are packed in double layers, each bag with net weight of 25kg or 50kg or packed according to customers' requirements.

Technical requirements:YS/T691-2009

Grade

Chemical Composition

F

Mg

       Ca

SiO2

Fe2O3

SO42-

H2O

Not Less than(≥)

Not More than(≤)

MF-1

60

38

0.3

0.20

0.3

0.6

0.2

MF-2

45

28

-

0.9

1.1

1.3

1.0

 




?