Calcium sulphate dihydrate 10101-41-4


Product Deail


Calcium sulphate dihydrate

Another name】Gypsum.

Description】White monoclinic crystal or powder, relative density 2.32, melting point 1450℃. The loss of 1.5 crystal water at 128℃ is hemihydrate, and above 163℃ is anhydrous. Slightly soluble in water, soluble in acid, ammonium salt, sodium thiosulfate and glycerol, insoluble in alcohol.

Test item

AR

CP

Other

Assay(CaSO4•2H2O) /%

≥99.0

≥97.0

Custom

Clarity of solution /# ≥3

≥5

Insoluble matter in hydrochloric acid /%

≤ 0.025

≤ 0.05

Chloride(Cl) /%

≤ 0.002

≤ 0.005

Nitrate(NO3) /%

≤ 0.002

≤ 0.005

Carbonate(CO3) /%

≤ 0.05

≤ 0.1

Sodium(Na) /%

≤ 0.02

≤ 0.05

Magnesium(Mg) /%

≤ 0.02

≤ 0.05

Potassium(K) /%

≤ 0.005

≤ 0.01

Iron(Fe) /%

≤ 0.000 5

≤ 0.001

Strontium(Sr) /%

≤ 0.05

≤ 0.1

Heavy metal (as Pb) /%

≤ 0.001

≤ 0.002

Use】Can be used as a hygroscopic agent and desiccant; Coating and paint production; Artificial ivory; Fuel, printing, metallurgy, water treatment; Soilconditioner; Cement additive; Food additives and processing AIDS; Pharmaceutical excipients and additives.