Industrial hexametaphosphate (SHMP) formula (NaPO3) 6 Molecular Weight 611.77 specifications in line with HG / T2519-93; customer requirements 25Kg, 50Kg double inner plastic woven bags; customer uses for the bonding agent in industrial production, flotation agents, dispersing agents, water softener, buffers and other technical requirements 1. Appearance: White powder or granular 2. Industrial hexametaphosphate should meet the following requirements (HG / T2519-93) Item Index Grade Qualified Total phosphate (P2O5) content,% ≥ 68.0 65.0 non-reactive phosphate (as P2O5) content,% ≤ 7.5 10.0 Water insoluble matter,% ≤ 0.05 0.15 iron (Fe) content,% ≤ 0.05 0.20 PH value (10g / L) 5.8-7.0 Solubility qualified other properties: a melting point of 616 ℃ (decomposition), the relative density of 2.484g / cm3 (20 ℃), soluble in water, insoluble in organic solvents. Colorless transparent glass flake or white granular crystals. Very hygroscopic, exposed in air and was able to gradually absorb moisture glue substance. Calcium, magnesium and other metal ions can form soluble complexes. 2, soda ash or caustic soda solution by neutralization reaction with phosphoric acid, after completion of heating was continued to 250 ℃, generate sodium metaphosphate, and then heated to 620 ℃ melt polymerization cost and crystal, the quench producer (pressure tablets) was prepared. Food grade sodium hexametaphosphate is required after the completion of the reaction in addition to arsenic, heavy metals, etc. In addition to purification, re-heating and melt system. For the manufacture of water treatment agents, corrosion inhibitors, metal surface treatment agent, cement hardening accelerator, coated paper and pulp proliferation of agents, such as oil drilling. Food grade, primarily for quality improver, chelating agent, fermentation leavening agent, pH adjusting agents and the like. Two main applications are mainly used in food and industrial sectors. Which is mainly for the food industry: · hexametaphosphate for meat, fish sausage, ham, etc., can increase water holding capacity, increased knot, prevent fat oxidation; * for miso, soy sauce can prevent discoloration, increase sticky thick, shortened the fermentation period, adjust taste; * for fruit drinks, soft drinks, juice can increase the rate of increase in viscosity, inhibiting vitamin C decomposition; · for ice cream can improve the capacity expansion, increase the volume and enhance the emulsification prevent paste body damage, improve the taste and color; * for dairy products, beverages to prevent the gel precipitation; · adding beer to clarify wine, prevent turbidity; * for beans, canned fruits and vegetables, can be stable natural pigment, protecting the food color; · hexametaphosphate solution sprayed on marinated meat, can improve corrosion resistance. The main industrial areas are: · hexametaphosphate heated with sodium monofluorophosphate manufacturing, the latter as an important industrial raw materials; · hexametaphosphate as a water softener, such as used in the dyeing and finishing, play soft effects; · hexametaphosphate also widely used as a scale inhibitor EDI (resin electrodialysis), RO (reverse osmosis), NF (NF), and other water treatment industry.