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Calcium Sulphate

Gypsum,Dihydrate
 
 
Production information
PROPERTIES
Properties 　
Chemical formula CaSO4
Density 2.96 g/cm3 (anhydrous)
　 2.32 g/cm3 (dihydrate)
Melting point 1,460 °C (2,660 °F; 1,730 K) (anhydrous)
Molar mass 136.14 g/mol (anhydrous)
　 145.15 g/mol (hemihydrate)
　 172.172 g/mol (dihydrate)
 
 
SPECIFICATION
Specification : Agricultural Grade
Description: : White Powder 
Assay:                            : 95％ Min 
Whiteness :                     : 90% min 
Specific weight(g/m3):     : 2.36
Crystal water(%):            : 19-21
Free Moisture at 45 °C:   : ≤1.0% 
Sulfur trioxide SO3 (%):    : 44-46 
Calcium oxide CaO (%):  : 31-33 
Magnesium oxide MgO (%): : 0.2-0.8 
Carbon dioxide CO2 (%):  : 0.5-1.0 
Acid Insoluble Matter (%):  : 0.2-1.0 
PH—10% Slurry 10%:      : 6.8-7.2 
Fluorine (F):                     : 0.01% MAX 
Selenium(Se):                : 0.005% MAX 
Arsenic(As):                   : 0.001％ MAX 
Plumbum(Pb):                 : 0.001％ MAX  
 
 
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GREMONT CHEMICAL COMPANY LIMITED     TEL NO : 886-2-2231-2360     E-MAIL : gremont.chem@msa.hinet.net
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