A note to our European Union customers
International shipping is currently disabled due to ongoing issues resulting from Brexit
and changes with customs procedures. Please note, once resumed, international shipments will
be subject to VAT and duties and orders can only be placed in acceptance of this.
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We will only be able to ship to Northern Ireland where a Royal Mail postal option has been chosen.
Other UK orders are unaffected
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Calcium Sulphate di-Hydrate is also known as Gypsum. It is a soft sulphate mineral composed of calcium sulphate dihydrate, with the chemical formula CaSO4-2H2O. It can be used as a fertilizer, is the main constituent in many forms of plaster and is widely mined.
EEC Additive No: E516
Food Grade
Minimum Assay: 99%
Molecular Formula: CaSO4•2H2O
Molecular Weight: 172.17 (136.14anhy)
Solubility in Water: 2.1g/L
Melting Point: 1450° C
Substance insoluble in HCl: <0.005%
Loss on drying: <23%
Fluoride (F): : <30mg/Kg
Selenium (Se): <30mg/Kg
Arsenic (As): <3mg/Kg
Heavy metals (as Pb): <2mg/Kg
Mercury (Hg): <1mg/Kg
Mean Particle Diameter: 20 microns
Sieve Analysis:
2.5% @ 150um
10% @ 75um
Oil Absorbotion: <33ml/g
Hardenss (MOH's): 2
Hazard Phrases: Not considered harmful under normal laboratory conditions
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