Molecular formula: (NaPO3) 6 (Ar~611.77) 
Appearance: transparent glass flake or powder 
The nature of:
1, melting point 616 (decomposition),
the relative density 2.484g/cm3 (20),
soluble in water, insoluble in organic solvents.
Colorless, transparent glass sheet or white crystalline granular. Hygroscopicity strong, open to the air under water and was gradually absorbed flakes viscose. With calcium, magnesium and other metal ions can generate soluble complexes. 
2,Used in the manufacture of water treatment agents, corrosion inhibitors, metal surface treatment agent, cement hardening accelerator, paper pulp, as well as the proliferation of agents, such as oil drilling. Food grade is mainly used as a quality improver, chelating agent, fermentation agent fermentation, pH value regulator.  Detailed instructions: heating system sodium monofluorophosphate sodium fluoride sodium hexametaphosphate meat products, fish sausage, ham, etc., can improve water-holding capacity, higher node, in order to prevent fat oxidation; for sauce , soy sauce, to prevent discoloration, increased viscosity, shorten the fermentation cycle, adjusting the taste; fruit drinks, soft drinks, fruit juice can increase the growth rate of viscosity, inhibit decomposition of vitamin C; ice cream can be used to enhance the capacity of the expansion of an increase in the number and strengthen the role of emulsion paste to prevent damage and improve the texture and color; of dairy products, soft drinks, to prevent the gel precipitation; In order to clarify the beer by adding the wine to prevent turbidity; beans, canned fruits and vegetables can be a stable natural pigment, to protect the food color. In addition, spraying sodium hexametaphosphate aqueous solution of the salted meat may increase the anti-corrosion performance. Sodium Hexametaphosphate industrial production can also be used as soft water, such as used for dyeing and finishing, the role played by soft water.