The dihydrate form of calcium sulfate used in low temperature thermoset
plastic and specialty cement applications. Often used as a
flame-retarding filler when processed at room temperature.
Alba No. 1is a dihydrate form of calcium sulfate produced by fine
grinding and air-separating high-purity, white gypsum containing 20%
water of crystallization. It releases combined water as it is heated
above 50°C, releasing 75% of water as temperatures reach 180°C (only
when temperatures exceed 400°C is water totally removed). USG Terra
Alba No. 1:
- Can be used as a flame-retarding filler when processed at room temperature
- Contributes to desired expansion, green strength and controlled
set in specialty cement applications
- Is a relatively soft material (2-3 Mohs scale hardness)
contributing to minimal wear on equipment.