Chemical name: calcium sulphate bihydrate

Commercial name: plaster

CHEMICAL AND PHYSICAL PROPERTIES

Physical state

solid in powder

Colour

white, white - havana brown, light grey

Odour

odourless

pH

7

Fusion temperature

over 700°C decompose in CaO e SO3

Boiling temperature

over 1400°C decompose for dehydratation in CaSO4 e H2O

Inflammability point

not combustible

Inflammability

not combustible

Autoinflammability

not combustible

Explosive properties

any

Relative density

CaSO4, xH2O (x=0, ½, 2) : 2,31 - 2,97 g/cm3

Solubility

hydrosolubility 2g/l