应用
Used as portland-cement retarder, tile and plaster. It is a source of sulfur and sulfuric acid. Also used in polishing powder and paints, dyeing and calico printing. It is likewise employed in zinc metallurgy. It is employed in drying industrial gases, solids and many organic liquids. In granulated form it is used as soil conditioner. Used for food additives in the soy manufacturing industry.

Grade Specifications
Maximum level of impurities: Insoluble in dilute hydrochloric acid 0.02%, Cl 0.005%, NO₃ P.T. (limit about 0.005%), CO₃ P.T., Heavy Metals (as Pb) 0.002%, Fe 0.001%, Mg 0.02%, K 0.005%, Na 0.02%, Sr 0.05%

备注
It is hygroscopic in nature. It is non-combustible. Stable under normal temperatures and pressures. On decomposition gives oxides of sulfur and calcium oxide.

基本信息

MDL
MFCD00149625

EINECS
231-900-3

分子式
CaSO₄?2H₂O

分子量
172.17 (136.14anhy)

熔点
128° -1.5H{2}O

沸点
163° -2H{2}O

密度
2.32

灵敏度
Hygroscopic. Ambient temperatures.

形态
Powder

溶解性
Soluble in water.

Merck
14,1706

安全信息

RTECS
EW4150000

TSCA
是