Hexasodium hexametaphosphate

Base Information

• Chemical Name: Hexasodium hexametaphosphate
• CAS No.: 10124-56-8
• Deprecated CAS: 16210-45-0,193678-44-3,20517-55-9,8012-14-4,1357387-91-7,1357387-91-7,193678-44-3,20517-55-9,8012-14-4
• Molecular Formula: Na6O18P6
• Molecular Weight: 611.770386 [g/mol] .
• Hs Code.: HOSPHATE PRODUCT IDENTIFICATION
• European Community (EC) Number: 688-275-9
• UNII: N40N91DW96
• DSSTox Substance ID: DTXSID1047522
• Nikkaji Number: J227.052H
• Wikidata: Q3116769
• RXCUI: 1487530
• Mol file: 10124-56-8.mol

Synonyms:Calgon;polymetaphosphate;sodium hexametaphosphate;sodium polymetaphosphate

Chemical Property of Hexasodium hexametaphosphate

Chemical Property:

• Appearance/Colour: white granular solid
• Melting Point: 616 °C
• Refractive Index: 1.482
• Boiling Point: 1500℃
• PSA: 387.19000
• Density: 2.181 g/cm³
• LogP: 3.28080
• Storage Temp.: 2-8°C
• Water Solubility.: Soluble in water. Insoluble in organic solvents
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 18
• Rotatable Bond Count: 0
• Exact Mass: 611.6896508
• Heavy Atom Count: 30
• Complexity: 513

Purity/Quality:

68% min ^*data from raw suppliers

Sodium hexametaphosphate crystalline, +200?mesh, 96% ^*data from reagent suppliers

Safty Information:

• Safety Statements: 24/25

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: [O-]P1(=O)OP(=O)(OP(=O)(OP(=O)(OP(=O)(OP(=O)(O1)[O-])[O-])[O-])[O-])[O-].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+]
• Uses: It can be used as a food quality improver in food industry, pH adjusting agent, metal ion chelating agents, dispersants, extenders, etc. It can be used as a kind of common analytical reagents, water softener, and also used for photofinishing and printing. It can be used as a water softener, detergent, preservative, cement hardening accelerator, fiber dyeing and cleaning agents; it can also used for medicine, food, petroleum, printing and dyeing, tanning, and paper industry. It can be used as texturizing agent; emulsifiers; stabilizer; chelating agent. It is less frequently for being used alone and is generally used in mixture with pyrophosphate and metaphosphate. The mixture is mainly used for ham, sausage, surimi such as the tissue improver for water retention, tendering and meat softening. It can also be used for prevention of crystallization of canned crab as well as dissolving agent of pectin. It can be used as the water softening agent of boiler water and industrial water (including water for the production of dyes, water for the production of titanium dioxide, water for printing and dyeing, and slurry mixing, water for cleaning color copy of the film, as well as chemical industrial water and the water for the medicines, reagents production, etc.) as well as the water treatment agent for the industrial cooling water; it can also be used as a corrosion inhibitor, flotation agent, dispersant agent, high temperature binding agent, dyeing auxiliaries, metal surface treatment, rust inhibitors, detergent additives and also cement hardening accelerator. Coated paper production can use it as pulp dispersants in order to improve the penetration capability. In addition, it can also be apply to the washing utensils and chemical fiber in order to remove iron ions of the pulp. In the oil industry, it can be used for the antirust of the drilling pipe and adjusting the slurry viscosity upon the control of oil drilling. It can be used as the quality improver with various effects of increasing the complex metal ions of food, pH, ionic strength, thereby improving the adhesive capability as well as the water holding ability of food. China provides that it can be applied to the dairy products, poultry products, ice cream, instant noodles and meat with the maximum permitted amount being 5.0 g/kg; the maximal permitted usage amount in canned food, fruit juice (flavored) drinks and vegetable protein drink is 1.0g/kg. It can be used as a food quality improver in food industry and applied to canned food, fruit juice drinks, dairy products, and soy milk. It can be used as Ph adjusting agent, metal ion chelate agent, adhesive and bulking agents. When being applied to beans and canned fruits and vegetables, it can be stabilize the natural pigment and protect the food color and lustre; when being used in canned meat, it can be used for preventing the emulsification of the fat and maintaining its uniform texture; when being applied to meat, it can be used to increase the water holding capacity and prevent the deterioration of fat in the meat. It can also help to clarify the wine when being supplied to beer and further prevent turbidity. Sodium Hexametaphosphate is a sequestrant and moisture binder that is very soluble in water but dissolves slowly. solutions have a ph of 7.0. it permits peanuts to be salted in the shell by making it possible for the salt brine to penetrate the peanuts. in canned peas and lima beans, it functions as a tenderizer when added to the water used to soak or scald the vegetables prior to canning. it improves whipping properties in whipping proteins. it functions as a seques- trant for calcium and magnesium, having the best sequestering power of all the phosphates. it prevents gel formation in sterilized milk. it is also termed sodium metaphosphate and graham’s salt. For industrial use, such as oil field, paper-making, textile, dyeing, petrochemical industry,tanning industry, metallurgical industry and building material industry, It is mainly used as a water sortening agent in solution for printing, dyeing ,and boiler; Diffusant in papermersing medium, high temperature agglomerant,detergent and soil analytical chemistry reagent, sodium hexametaphosphate is a chelating agent and a corrosion inhibitor. This is an inorganic salt.
• Production method: Sodium dihydrogen phosphate: The soda solution was first subject to neutralization reaction with phosphate acid at 80~100 ℃ for 2h; the resulting sodium dihydrogen phosphate solution was concentrated by evaporation, cooled and crystallized to obtain sodium dihydrogen phosphate dihydrate and heated to 110~230 ℃ to remove two crystal water; further be subject to heating to remove the structural water; further being heated to 620 ℃ for dehydration to result in the molten sodium metaphosphate and further polymerized into sodium hexametaphosphate, and discharged; apply chilling shock fro 650 ℃ to 60~80 ℃ for flaking, and crush to obtain the hexametaphosphate products. Its reaction formula is as below: Na2CO3 + 2H3PO4 + H2O → 2NaH2PO4?2H2O + CO2 ↑ NaH2PO4?2H2O [△] → Na2H2PO4 + 2H2O 2NaH2PO4 [△] → Na2H2P2O7 + H2O Na2H2P2O7 → 2NaPO3 + H2O 6NaPO3 [△] → (NaPO3) 6 Phosphorus pentoxide method: put the yellow phosphorus into a steam of dry air for combustion and oxidation, the cooling obtained phosphorus pentoxide is mixed together with soda in certain ratio (Na2O: P2O5 = 1~1.1). Put the mixed powder in a graphite crucible and heated indirectly to have it dehydrated and agglomerated, the resulting sodium hexametaphosphate is subject to flaking upon chilling shock and pulverized to obtain industrial hexametaphosphate products. The reaction formula is as below: P4 + 5O2 → 2P2O5 P2O5 + Na2CO3 → 2NaPO3 + CO2 ↑ 6NaPO3 [△] → (NaPO3) 6