Phosphate

Product name ：Phosphate

CAS:7664-38-2

H.S.:2835299000

Phosphate Introduce:

Metaphosphate is usually a compound that is polymerized into a cyclic shape, the general formula is (MPO3)n, the common ones are dimer metaphosphate (six-membered ring) and tetrameric metaphosphate (eight-membered ring), polymetaphosphate does not have a definite crystal structure, also known as phosphate vitreous. Sodium hexametaphosphate is the most common phosphate vitreous, it has no fixed melting point, the solubility in water is uncertain, the pH of the aqueous solution is between 5.5~6.4, and it is actually a long-chain compound with 20~100 PO3 units. Chain phosphate can be used as a treatment agent for boiler water, a pigment dispersant, a slurry dispersant and a metal preservative.

Phosphate is one of the natural components of almost all foods and is widely used in food processing as an important food ingredient and functional additive.

The naturally occurring phosphate is phosphate rock (containing calcium phosphate), which reacts with phosphate rock to produce calcium dihydrogen phosphate and calcium sulfate that can be absorbed by plants, and phosphate can be prepared. Phosphate can be divided into orthophosphate and polyphosphate: the phosphate used in food processing is usually sodium salt, calcium salt, potassium salt and iron salt and zinc salt as a nutritional enhancer, there are more than 30 varieties of commonly used food-grade phosphate, sodium phosphate is the main consumption of domestic food phosphate, with the development of food processing technology, the consumption of potassium phosphate is also increasing year by year.

Usage:

Phosphate is generally used in detergents as a water softener。

Phosphate is used as a binder in refractories. Phosphate binder is a refractory binder with acid orthophosphate or polycondensation phosphate as the main compound and gelling properties. The binding form of phosphate binders is chemical reaction binding or polymeric bonding. Most of the binders made by the reaction of phosphoric acid with alkali metal or alkaline earth metal oxides and their hydroxides are gas-hard binders, that is, coagulation and hardening can occur without heating at room temperature. Most of the binders made by the reaction of phosphoric acid with amphoteric oxides and hydroxides or acid oxides are hot-hard binders, that is, they must be heated to a certain temperature to react before they can produce coagulation and hardening. Phosphate is used as a binding agent for refractory materials, and has strong bonding strength in the medium and low temperature range before the ceramic bonding, so it is widely used as a binding agent for amorphous refractories and unburned refractories. ...