..国产精品人人做人人爽_免费毛片搬运工永久发布页_国产无遮挡又黄又爽在线看_嘟嘟嘟影院免费韩国_日韩动漫一区二区三区_日韩三级毛片电影_一级特黄大片大全_蜜桃AV国内精品自在线拍_国产偷情熟女自拍视频_日本熟妇网站大全

Chemical reagent
Magnesium sulfate, heptahydrate

Product name

Magnesium sulfate, heptahydrate

Specification

Reagent grade

Molecular formula

MgSO4 ·7H2O

CAS

10034-99-8

H.S. CODE

2833210000

Molecular weight

246.47

Appearance

Colorless crystal

Package

25KG Woven bags or fiber drums

Property

  Colorless columnar or granular particles. A bitter salty. The relative density 1.67. In dry air weathering. Melting point 1124 ℃ (no water content), soluble in water, soluble in ethanol, glycerin, insoluble in acetone.

Application

  Used as an analytical reagent, such as for sulfate precipitation agent. Also used in medicine, printing and dyeing, papermaking, ceramics and leather industry.

Test standardGB/T 671-1998

Test items

Specification

AR grade

CP grade

Appearance

Colorless crystal

Colorless crystal

Assay

99.0%

99.0%

pH

5.0~8.0

5.0~8.0

Appearance of solution

Conform

Conform

Water insoluble

0.005%

0.01%

Chloride

0.0005%

0.001%

Arsenic

0.0001%

0.0002%

Sodium

0.005%

0.05%

Calcium

0.02%

0.05%

Manganese

0.001%

0.005%

Iron

0.0005%

0.001%

Heavy metal

0.0005%

0.001%

Storage

    Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.


Product categories
Copyright Langfang hui's fine chemical co., LTD. All rights reserved 冀ICP備20000901號-1
TOP