Factory Direct Supply Sodium Hexametaphosphate
China Factory Direct Supply Sodium Hexametaphosphate, Find details about China Sodium Hexametaphosphate, Sodium from Factory Direct Supply Sodium Hexametaphosphate
Basic Info.
Grade Standard
Industrial Grade
Trademark
Zhoutong
Specification
25kgs/bag
Origin
China
Grade Standard
Industrial Grade
Trademark
Zhoutong
Specification
25kgs/bag
Origin
China
Product Desciption
essential information:
Sodium hexametaphosphate is an inorganic substance with molecular formula (NaPO3) 6. It is a white powder crystal, or a colorless transparent glass sheet or block solid. Soluble in water, insoluble in organic solvents. It has strong hygroscopicity. When exposed to the air, it can gradually absorb water and form a viscose. It can form soluble complexes with calcium, magnesium and other metal ions. It is widely used in food and industrial fields.
Synthesis method:
1. Sodium dihydrogen phosphate method: neutralize the soda ash solution with phosphoric acid at 80 ~ 100 ºC for 2h. The generated sodium dihydrogen phosphate solution is evaporated, concentrated, cooled and crystallized to prepare sodium dihydrogen phosphate dihydrate. Heat to 110 ~ 230 ºC to remove two crystal water, continue to heat to remove structural water, and further heat to 620 ºC for dehydration to produce sodium metaphosphate melt, Sodium hexametaphosphate was synthesized by copolymerization. Then, it is unloaded, quenched from 650 ºC to 60 ~ 80 ºC, made into pieces, and crushed to obtain the finished product of sodium hexametaphosphate.
2. Phosphorus pentoxide method: the phosphorus pentoxide obtained by burning, oxidizing and cooling yellow phosphorus in dry air flow is mixed with soda ash in a certain proportion (Na2O: P2O5 = 1 ~ 1.1). The mixed powder is indirectly heated in a graphite crucible to dehydrate and fuse, and the resulting sodium hexametaphosphate melt is quenched, sliced and crushed to prepare the finished product of industrial sodium hexametaphosphate.
3. The reagent sodium dihydrogen phosphate is heated to 700 ~ 900 ºC for melting. When the melt is completely transparent and the internal bubbles disappear, it is quenched to 60 ~ 80 ºC to obtain a thin glass product, namely sodium hexametaphosphate.
4. The dimer of sodium metaphosphate can be obtained by heating the reagent sodium dihydrogen phosphate to 250 ºC and quenching; Heat to 650 ºC and quench to obtain sodium hexametaphosphate.
5. Phosphorus anhydride method: after heating and melting the yellow phosphorus, it is sent to the oxidation combustion furnace, and the oxygen in dry air is used for oxidation combustion reaction to generate the intermediate product phosphorus anhydride. After mixing phosphoric anhydride and soda ash, Flake sodium hexametaphosphate is obtained by high temperature polymerization and quenching; Powdered sodium hexametaphosphate can be obtained by crushing.
6. Neutralization polymerization method: phosphoric acid and liquid sodium hydroxide are added into the neutralization tank continuously and accurately according to the required amount through their respective batch controllers (control the input amount of each batch of liquid alkali and acid, which can be batched automatically, and the feeding speed can be adjusted arbitrarily within the range of 0 ~ 20L / min). After the reaction is completed, the pH value reaches 4 ~ 4.4 to generate disodium hydrogen phosphate, The neutralized liquid is pumped into the high-level tank. A certain amount of disodium hydrogen phosphate is continuously and evenly sent to the dryer for drying to obtain flake disodium hydrogen phosphate with specified moisture content, and then continuously sent to the diesel fired high temperature (750 ~ 850 ºC) polymerization furnace made of special corrosion-resistant materials to melt and polymerize disodium hydrogen phosphate; The molten material flows out continuously from the polymerization furnace and is quenched to obtain Flake sodium hexametaphosphate, which is crushed and screened to obtain the product.
Purpose:
1. It is mainly used in food and industrial industries. The main applications in the food industry are:
(1) Sodium hexametaphosphate is used in meat products, fish sausage, ham, etc., which can improve water retention, increase adhesion and prevent fat oxidation;
(2) Used in soybean paste and soy sauce, it can prevent discoloration, increase viscosity, shorten fermentation period and adjust taste;
(3) Used in fruit drinks and cool drinks, it can improve juice yield, increase viscosity and inhibit vitamin C decomposition;
(4) For ice cream, it can improve the expansion capacity, increase the volume, enhance the emulsification, prevent the damage of paste, and improve the taste and color;
(5) to prevent gel precipitation from dairy products and beverages.
(6) Adding beer can clarify liquor and prevent turbidity;
(7) Used in canned beans, fruits and vegetables, it can stabilize natural pigment and protect food color;
(8) Spraying sodium hexametaphosphate aqueous solution on cured meat can improve the anti-corrosion performance.
2. The industrial sector mainly includes:
(1) Sodium hexametaphosphate can be heated with sodium fluoride to produce sodium monofluorophosphate, which is an important industrial raw material;
(2) Sodium hexametaphosphate, as a water softener, can soften water if used in dyeing and finishing;
(3) Sodium hexametaphosphate is also widely used in EDI (resin electrodialysis), RO (reverse osmosis), NF (nanofiltration) and other water treatment industries as a scale inhibitor.
Sodium hexametaphosphate is an inorganic substance with molecular formula (NaPO3) 6. It is a white powder crystal, or a colorless transparent glass sheet or block solid. Soluble in water, insoluble in organic solvents. It has strong hygroscopicity. When exposed to the air, it can gradually absorb water and form a viscose. It can form soluble complexes with calcium, magnesium and other metal ions. It is widely used in food and industrial fields.
Synthesis method:
1. Sodium dihydrogen phosphate method: neutralize the soda ash solution with phosphoric acid at 80 ~ 100 ºC for 2h. The generated sodium dihydrogen phosphate solution is evaporated, concentrated, cooled and crystallized to prepare sodium dihydrogen phosphate dihydrate. Heat to 110 ~ 230 ºC to remove two crystal water, continue to heat to remove structural water, and further heat to 620 ºC for dehydration to produce sodium metaphosphate melt, Sodium hexametaphosphate was synthesized by copolymerization. Then, it is unloaded, quenched from 650 ºC to 60 ~ 80 ºC, made into pieces, and crushed to obtain the finished product of sodium hexametaphosphate.
2. Phosphorus pentoxide method: the phosphorus pentoxide obtained by burning, oxidizing and cooling yellow phosphorus in dry air flow is mixed with soda ash in a certain proportion (Na2O: P2O5 = 1 ~ 1.1). The mixed powder is indirectly heated in a graphite crucible to dehydrate and fuse, and the resulting sodium hexametaphosphate melt is quenched, sliced and crushed to prepare the finished product of industrial sodium hexametaphosphate.
3. The reagent sodium dihydrogen phosphate is heated to 700 ~ 900 ºC for melting. When the melt is completely transparent and the internal bubbles disappear, it is quenched to 60 ~ 80 ºC to obtain a thin glass product, namely sodium hexametaphosphate.
4. The dimer of sodium metaphosphate can be obtained by heating the reagent sodium dihydrogen phosphate to 250 ºC and quenching; Heat to 650 ºC and quench to obtain sodium hexametaphosphate.
5. Phosphorus anhydride method: after heating and melting the yellow phosphorus, it is sent to the oxidation combustion furnace, and the oxygen in dry air is used for oxidation combustion reaction to generate the intermediate product phosphorus anhydride. After mixing phosphoric anhydride and soda ash, Flake sodium hexametaphosphate is obtained by high temperature polymerization and quenching; Powdered sodium hexametaphosphate can be obtained by crushing.
6. Neutralization polymerization method: phosphoric acid and liquid sodium hydroxide are added into the neutralization tank continuously and accurately according to the required amount through their respective batch controllers (control the input amount of each batch of liquid alkali and acid, which can be batched automatically, and the feeding speed can be adjusted arbitrarily within the range of 0 ~ 20L / min). After the reaction is completed, the pH value reaches 4 ~ 4.4 to generate disodium hydrogen phosphate, The neutralized liquid is pumped into the high-level tank. A certain amount of disodium hydrogen phosphate is continuously and evenly sent to the dryer for drying to obtain flake disodium hydrogen phosphate with specified moisture content, and then continuously sent to the diesel fired high temperature (750 ~ 850 ºC) polymerization furnace made of special corrosion-resistant materials to melt and polymerize disodium hydrogen phosphate; The molten material flows out continuously from the polymerization furnace and is quenched to obtain Flake sodium hexametaphosphate, which is crushed and screened to obtain the product.
Purpose:
1. It is mainly used in food and industrial industries. The main applications in the food industry are:
(1) Sodium hexametaphosphate is used in meat products, fish sausage, ham, etc., which can improve water retention, increase adhesion and prevent fat oxidation;
(2) Used in soybean paste and soy sauce, it can prevent discoloration, increase viscosity, shorten fermentation period and adjust taste;
(3) Used in fruit drinks and cool drinks, it can improve juice yield, increase viscosity and inhibit vitamin C decomposition;
(4) For ice cream, it can improve the expansion capacity, increase the volume, enhance the emulsification, prevent the damage of paste, and improve the taste and color;
(5) to prevent gel precipitation from dairy products and beverages.
(6) Adding beer can clarify liquor and prevent turbidity;
(7) Used in canned beans, fruits and vegetables, it can stabilize natural pigment and protect food color;
(8) Spraying sodium hexametaphosphate aqueous solution on cured meat can improve the anti-corrosion performance.
2. The industrial sector mainly includes:
(1) Sodium hexametaphosphate can be heated with sodium fluoride to produce sodium monofluorophosphate, which is an important industrial raw material;
(2) Sodium hexametaphosphate, as a water softener, can soften water if used in dyeing and finishing;
(3) Sodium hexametaphosphate is also widely used in EDI (resin electrodialysis), RO (reverse osmosis), NF (nanofiltration) and other water treatment industries as a scale inhibitor.
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