Quick Search
CAS: 7785-84-4
MF: 3Na.O9P3
MW: 305.88
EINECS: 232-088-3
Sodium trimethyl phosphate, with formula Na3P3O9, is a metaphosphate of sodium.
Sodium trimethyl phosphate has the empirical formula NaPO3.
Sodium trimethyl phosphate is the sodium salt of trimetaphosphoric acid.
Sodium trimethyl phosphate is a colourless solid that finds specialised applications in food and construction industries.
Sodium trimethyl phosphate is prepared by heating samples sodium polyphosphate.
Although drawn with a particular resonance structure, the trianion has D3d symmetry.
Hydrolysis of the ring leads to the acyclic Sodium trimethyl phosphate:
Na3P3O9 + H2O → H2Na3P3O10
The main reactions of the triphosphate anion is ring-opening by nucleophiles, including amines.
Sodium trimethyl phosphate is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 1 000 to < 10 000 tonnes per annum.
Sodium trimethyl phosphate is used by consumers, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.
Sodium trimethyl phosphate is white Crystal or crystalline powder.
Melting point 627.6 °c. Density 2.476g/cm3.
Readily soluble in water (2lg/lOOmL), the pH of the 1% aqueous solution is 6.0.
The addition of sodium chloride to the aqueous solution results in the formation of crystals of the hexahydrate salt.
Consumer Uses
Sodium trimethyl phosphate is used in the following products: adhesives and sealants, coating products, fillers, putties, plasters, modelling clay, fertilisers, inks and toners, pharmaceuticals, polymers, washing & cleaning products and cosmetics and personal care products.
Other release to the environment of Sodium trimethyl phosphate is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use.
Sodium trimethyl phosphate works as the crosslinking agent in the cross-linked amylase-resistant starch.
Sodium trimethyl phosphate, Na3[P3O9], is the most stable compound of this group of reagents.
The hydrated form of Sodium trimethyl phosphate contains 6 or 10 molecules of water of crystallization.
Commercial production is obtained by heating NaPO3 at 525 °C.
Sodium trimethyl phosphate used in the food industry as a starch modifier, juice turbidity prevention agent, meat Binder, dispersant and stabilizer (for ice cream, cheese, etc.).
Can prevent food discoloration and prevent the decomposition of vitamin C.
Sodium trimethyl phosphate is also used as a water softening agent
Sodium trimethyl phosphate is used in the following products: pH regulators and water treatment products, adhesives and sealants, coating products, fillers, putties, plasters, modelling clay, fertilisers, metal surface treatment products, inks and toners, laboratory chemicals, polymers, washing & cleaning products, water softeners and water treatment chemicals.
Sodium trimethyl phosphate is used in the following areas: agriculture, forestry and fishing, building & construction work, municipal supply (e.g. electricity, steam, gas, water) and sewage treatment and scientific research and development.
Sodium trimethyl phosphate is used for the manufacture of: wood and wood products, pulp, paper and paper products, chemicals, plastic products, metals, fabricated metal products, machinery and vehicles.
Other release to the environment of Sodium trimethyl phosphate is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use.
Sodium trimethyl phosphate is used in the following products: pH regulators and water treatment products, fertilisers, metal surface treatment products, hydraulic fluids, leather treatment products, textile treatment products and dyes, washing & cleaning products, water softeners and water treatment chemicals.
Sodium trimethyl phosphate is used in the following areas: mining and municipal supply (e.g. electricity, steam, gas, water) and sewage treatment.
Sodium trimethyl phosphate is used for the manufacture of: chemicals, textile, leather or fur, metals, fabricated metal products, machinery and vehicles and .
Release to the environment of Sodium trimethyl phosphate can occur from industrial use: in processing aids at industrial sites, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates) and as processing aid.
Preparation Method
The edible sodium dihydrogen phosphate is heated, dehydrated at 95 ℃ to become anhydrous sodium dihydrogen phosphate, and then sent into the box type polymerization furnace to heat and melt polymerization.
When the material temperature is 140~200 ℃, first, Sodium trimethyl phosphate is converted into sodium pyrophosphate, and then Sodium trimethyl phosphate is converted into cyclic sodium metaphosphate when heated to 260 ℃, and then it is polymerized to synthesize trimetaphosphoric acid when heated to 500 ℃.
After cooling and grinding, the edible Sodium trimethyl phosphate is prepared.
Sodium trimethyl phosphate Chemical Properties
Melting point: 53℃ [MER06]
density: 2.49
storage temp.: Inert atmosphere,Room Temperature
solubility: Water (Slightly)
form: Powder
Specific Gravity: 2.49
color: White
Water Solubility: Soluble in water. Insoluble in alcohol.
Merck: 14,8696
CAS DataBase Reference: 7785-84-4(CAS DataBase Reference)
EPA Substance Registry System: Sodium trimethyl phosphate (7785-84-4)
Production
10,000,000 - 50,000,000 lb
Formulations：
/Available from Monsanto Co as/ fine white powder, purified and technical grades ... purified grade meets FCC specifications on arsenic and heavy metals|TOOTHPASTES CONTAINING 0.5-95% SILICON DIOXIDE XEROGEL & 0.5-6% SODIUM TRIMETAPHOSPHATE ARE EFFECTIVE TOOTH POLISHING AGENTS.
Manufacturing Info：
All other chemical product and preparation manufacturing|Metaphosphoric acid (H3P3O9), sodium salt (1:3): ACTIVE|Stabilizing salts ... phosphates are used in imitation dairy products for one of the following purposes to: alter buffering capacity of the system; improve stability of the protein to calcium ions; improve the heat stability of the protein; minimize the age gelation of ultra-high temperature (UHT) processed imitation products; serve as emulsifying salts in imitation cheese manufacture; and modify the water-binding capacity of proteins and improve solubility ... .
Analytic Methods：
Sodium trimethyl phosphate is suggested that dusts of trisodium phosphate be collected in an impinger containing distilled water which may then be titrated with a standard solution of sulfuric acid.
They may also be analyzed for P2O3 content by precipitation of ammonium phosphomolybdate followed by redissolving in standard alkali & back-titrating with acid.
Gravimetric procedures are also available, as are NMR spectroscopy & ion exchange chromatography.
Synonyms
SODIUM TRIMETAPHOSPHATE
7785-84-4
Trisodium trimetaphosphate
Sodium trimetaphosphate [USAN]
3IH6169RL0
Cyclicsodiumtrimetaphosphate
trisodium;2,4,6-trioxido-1,3,5,2lambda5,4lambda5,6lambda5-trioxatriphosphinane 2,4,6-trioxide
Sodium trimetaphosphate (USAN)
Trisodium metaphosphate
Polyrinsan 58
Cyclic sodium trimetaphosphate
Sodium phosphate ((NaPO3)3)
HSDB 5048
Metaphosphoric acid, trisodium salt
Sodium metaphosphate (Na3(P3O9))
EINECS 232-088-3
Trisodium trimetaphosphate (Na3P3O9)
Cyclisches trinatriummetaphosphat [German]
UNII-3IH6169RL0
CCRIS 8524
Cyclisches trinatriummetaphosphat
Metaphosphoric acid (H3P3O9), trisodium salt
Trimetaphosphoric acid (H3P3O9), trisodium salt
1,3,5,2,4,6-Trioxatriphosphorinane, 2,4,6-trihydroxy-, trisodium salt
EC 232-088-3
CHEMBL2107557
DTXSID7052789
trimetaphosphate grade iii trisodium
SODIUM TRIMETAPHOSPHATE [II]
SODIUM TRIMETAPHOSPHATE [MI]
MFCD00867826
SODIUM TRIMETAPHOSPHATE [FCC]
SODIUM TRIMETAPHOSPHATE [HSDB]
SODIUM TRIMETAPHOSPHATE [INCI]
SODIUM TRIMETAPHOSPHATE [VANDF]
D02423
E75943
Metaphosphoric acid (H3P3O9), sodium salt (1:3)
Q7553388
(Triphosphoric acid alpha,beta,gamma-trisodium)alpha,gamma-anhydride salt
2,4,6-Tris(sodiooxy)-1,3,5,2,4,6-trioxatriphosphorinane 2,4,6-trioxide
