CALCIUM SULPHATE DIHYDRATE
GYPSUM - Superfine White
Technical Grade
An extremely high purity, micronised gypsum grade, obtained from naturally occurring mineral. It is used as an additive for accelarator of setting time or filler in tile adhesive and crack filler formulations, as a filler in polymers and other compounds as an extender in paints, in the formulation of oilwell drilling muds or as a formulant in fire retardant loft insulation and sacrificial anodes. It can also be used as an absorbent and as a carrier for insecticides or in fertilizers for Agriculture and Environment applications
PLEASE NOTE: This product is not for human or animal consumption.
Properties of Calcium Sulphate:
Chemical Name: Calcium sulphate dihydrate
Minimum gypsum purity %: 99
Water of crystallization %: Maximum 23
Moisture Content %: 0% at manufacture
Solubility of gypsum in water g / litre: 2.1
pH 7
Chemical Composition: CaSO4.2H2O
Physical Properties
Colour white
Colorometer L* value 92.5
Colorometer a* value 0.25
Colorometer b* value 3
Mean particle diameter (microns): 20
Seive Analysis (Mesh size and % weight retained): 2.5% at 150 μm
10% at 75 μm
Specific gravity of gypsum: 2.32
Apparent Density (g/cm³): 0.9
Bulk density (loose) kg / m³: 900
Bulk density (compacted) kg / m³: 1200
Gypsum Hardness (MOH scale) 2
Health & Safety:
Not a hazardous substance or mixture according to Regulation (EC) No. 1272/2008. This substance is not classified as dangerous according to Directive 67/548/EEC.