What is calcium sulfate dihydrate info Chemical Man

What is calcium sulfate dihydrate?

Calcium sulfate (or calcium sulphate) is the inorganic compound with the formula CaSO4 and related hydrates. In the form of γ-anhydrite (the anhydrous form), it is used as a desiccant. One particular hydrate is better known as plaster of Paris, and another occurs naturally as the mineral gypsum.

What is the chemical formula for calcium sulfate dihydrate?

Calcium sulfate exists in three different forms which are calcium sulfate (CaSO4), calcium sulfate dihydrate (CaSO4. 2H2O) and calcium sulfate hemihydrate (CaSO4. 1/2H2O). Calcium sulfate (anhydrite) is the commonest form of the natural sulfates and gypsum, CaSO4.

Is calcium sulfate toxic?

CALCIUM SULFATE is non-combustible. Decomposes to give toxic oxides of sulfur, but only at very high temperature (>1500°C). ... SOLUBLE ANHYDRITE, which is obtained by heating calcium sulfate dihydrate at a temperature below 300°C, has a high affinity for water and is used as a desiccant.

What is calcium sulfate used for in food?

E516 - Calcium sulfate: Mineral salt occurs naturally in the form of gypsum, and may be used as a sequestrant in food as well as a buffer and firming agent. Artificial sweetener base, bleaching agent for bread rolls, flour, tinned tomatoes, soy tofu, dried egg, cheese products, tooth paste.

What is plaster of Paris made out of?

plaster of Paris. mid-15c.; originally it was made from the extensive gypsum deposits of Montmartre in Paris. Any of a group of gypsum cements, essentially hemihydrated calcium sulfate, a white powder that forms a paste when mixed with water and hardens into a solid, used in making casts and molds.

How is a gypsum rock formed?
Massive gypsum rock forms within layers of sedimentary rock, typically found in thick beds or layers. It forms in lagoons where ocean waters high in calcium and sulfate content can slowly evaporate and be regularly replenished with new sources of water. ... Gypsum is commonly associated with rock salt and sulfur deposits.