Character:
Molar mass: 61 mol-1 /.77g appearance: white, no odor, crystalline powder
Density: 2.484g/cm3
Melting point: 61 degree C (decomposition)
Boiling point: 1500 degrees C
Solubility (water): soluble
Solubility (organic solvent): insoluble
Moisture absorption: strong, easy to be hydrolyzed in warm water, acid or alkali solution.

Other properties:
1, melting point 61 degrees Celsius (decomposition), the relative density of 2.484g/cm3 (20 degrees C), soluble in water, insoluble in organic solvents. Colorless transparent glass flake or white granular crystals. Moisture absorption is very strong, exposed in the air can absorb moisture and a viscose. And calcium, magnesium and other metal ions can produce soluble complex.
2, by or caustic soda solution with phosphoric acid for neutralization reaction, after heated to 250 DEG C, to generate sodium metaphosphate, heating to 620 DEG C melting and polymerization cost crystal, quenched production (grain). Food grade six sodium phosphate is required in the neutralization reaction after the completion of the removal of arsenic, removal of heavy metals and other purification treatment, and then the line heating and baking. For the manufacture of water treatment agent, corrosion inhibitor, metal surface treatment agent, cement hardening accelerator, coated paper pulp diffusion agent and oil drilling. Food grade, mainly used in the work of quality improvement agent, chelating agent, fermentation agent, pH modifier, etc..

Application:
Mainly used in food and industry. The food industry is mainly used in:
1, six sodium phosphate for meat products, fish sausage, ham and so on, can improve the water holding capacity, increase the sex, prevent fat oxidation;
2, for the miso, soy sauce can prevent discoloration, increase the viscosity, shorten the fermentation period, adjust the taste;
3, for fruit drinks, cool drinks, can increase the juice rate, increase the viscosity, inhibit the decomposition of vitamin C;
4, for ice cream can increase the expansion capacity, increase the volume, enhance the role of emulsion to prevent the destruction of the paste, improve the taste and color;
5, used for dairy products, beverage to prevent gel precipitation;
6, to join the beer can be clarified liquor, to prevent turbidity;
7, used for beans, canned fruits and vegetables, can stabilize the natural pigment, protect the food color;
8, six sodium phosphate solution sprayed on the cured meat, can improve the anti-corrosion properties.
Major industrial sectors:
1, six sodium fluoride can be heated with sodium fluoride to produce sodium fluoride, which is an important industrial raw material;
2, six sodium hexametaphosphate as a water softener, such as used in dyeing and finishing, to soft water;
3, six partial sodium phosphate as scale inhibitor widely used in EDI (resin electrodialysis) and RO (reverse osmosis) and NF (nanofiltration) water treatment industry.

Used as food quality improver in the food industry, used in canned food, fruit juice, milk, soy milk. Can be used as Ph regulator, metal ion chelating agent, adhesive agent and expansion agent. For beans, canned fruits and vegetables can be a stable natural pigment and protect the food's color; in canned meat in the fat emulsion and maintain uniform texture; for meat food can improve the water holding and prevent meat fatty degeneration. Add beer, can clear liquor, prevent turbidity.
Used in boiler water and industrial water (including dye production water, titanium dioxide production water, dyeing sizing and dyeing water, cleaning color film copy water and chemical water, drugs and reagents production water) water softener, water for industrial circulating cooling water treatment agent; also used as a corrosion inhibitor, flotation agent, dispersing agent, high temperature binder, dyeing auxiliaries, metal surface treatment, anti rust agent, detergent additives, cement hardening accelerator. The production of coated paper pulp used as dispersing agent, in order to improve the penetration. In addition to remove iron ions in the pulp washing utensils and chemical fiber for. In the petroleum industry, it is used to control the corrosion of drilling pipe and to control the viscosity of the mud when drilling.
Mainly used for water softener and paper diffusion agent of boiler water soft water, dyeing bath. Also used in corrosion inhibitor, flotation agent, dispersing agent and high temperature bond. The other was used to remove the pulp washing utensils and iron in chemical fiber. Also used for soil analysis.

Consumption:
General 0.3-0.5%, dosage of 0.9% in cheese; 0.3% meat; milk powder, milk powder, frozen fish, shrimp 0.5%; condensed milk, beverage 0.2%.
Food grade six partial sodium phosphate in trace amounts of heavy metals such as lead and arsenic, arsenic can cause skin depigmentation, coloring, keratinization and carcinogenesis of systemic poisoning; food grade six partial sodium phosphate and certain content of fluoride and low concentration of fluoride will cause chronic poisoning and fluorosis of bone, the bones of calcium resulted in a decrease in bone sclerosis and osteoporosis.