53 °C (127 °F; 326 K) (hexahydrate, decomposes to anyhdrous)
Solubility in water
22 g/100 mL
Solubility
insoluble in alcohol
Refractive index (nD)
1.433 (hexahydrate)
Structure
Crystal structure
triclinic (hexahydrate)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Nverify (what is YN ?)
Infobox references
Chemical compound
Sodium trimetaphosphate (also STMP), with formula Na3P3O9, is one of the metaphosphates of sodium. It has the formula Na3P3O9 but the hexahydrate Na3P3O9·(H2O)6 is also well known. It is the sodium salt of trimetaphosphoric acid. It is a colourless solid that finds specialised applications in food and construction industries.[2]
Although drawn with a particular resonance structure, the trianion has high symmetry.[3]
Portion of the solid state structure of Na3P3O9·(H2O)6, as determined by X-ray crystallography. Highlighted is the P3O9 ring and some hydrogen bonding. Atoms are color coded as: purple = P, red = O, cyan = Na, white = H.[4]
^
Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. pp. 4–86. ISBN 0-8493-0594-2.
^Klaus Schrödter; Gerhard Bettermann; Thomas Staffel; Friedrich Wahl; Thomas Klein; Thomas Hofmann (2008). "Phosphoric Acid and Phosphates". Ullmann's Encyclopedia of Industrial Chemistry. Ullmann’s Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a19_465.pub3. ISBN 978-3527306732. S2CID 94458523.
^Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 530. ISBN 978-0-08-037941-8.
^Tordjman, I.; Durif, A.; Guitel, J. C. (1976). "Structure Cristalline du Trimétaphosphate de Sodium Hexahydraté: Na3P3O9*6H2O". Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 32 (6): 1871–1874. Bibcode:1976AcCrB..32.1871T. doi:10.1107/S0567740876006560.
and 14 Related for: Sodium trimetaphosphate information
Sodiumtrimetaphosphate (also STMP), with formula Na3P3O9, is one of the metaphosphates of sodium. It has the formula Na3P3O9 but the hexahydrate Na3P3O9·(H2O)6...
polyphosphates are known including the cyclic triphosphate (e.g. sodiumtrimetaphosphate). It binds strongly to metal cations as both a bidentate and tridentate...
solution, particularly under acidic conditions, to sodiumtrimetaphosphate and sodium orthophosphate. Sodium hexametaphosphate is the alkali salt of one of...
metaphosphates, include the trimer sodiumtrimetaphosphate and the tetramer, Na3P3O9 and Na4P4O12, respectively. Polymeric sodium phosphates are formed upon heating...
as an alternative of white phosphorus in organic syntheses. SodiumtrimetaphosphateSodium hexametaphosphate Averbuch-Pouchot, M.T; Durif, A. (1996). Topics...
NaH2PO4 → Na2H2P2O7 + H2O When heated at 550 °C, anhydrous trisodium trimetaphosphate is formed: 3 NaH2PO4 → Na3P3O9 + 3 H2O Phosphates are often used in...
weight per day) seem to pose no health risk. Phosphoric acids SodiumtrimetaphosphateSodium hexametaphosphate Jessen, Henning J.; Dürr-Mayer, Tobias; Haa...
STMP may refer to: Sodiumtrimetaphosphate (also STMP), a metaphosphate of sodium Stamps.com (Nasdaq ticker: STMP), an American company that provides Internet-based...
permanent. It is manufactured by treating starch with sodium tripolyphosphate (STPP) and sodiumtrimetaphosphate (STMP), or phosphoryl chloride (POCl3). Phosphorylated...
contain any of them. Tapioca also contains very little cholesterol, fat, or sodium. To support to the creation of tapioca pearls, some additives are used,...
phosphate (INS 1412, E1412) by esterification with for example sodiumtrimetaphosphate, crosslinked starch modifying the rheology, the texture acetylated...
acids are often called "metaphosphates". What are commonly called trimetaphosphates actually have a mixture of ring sizes. A general formula for such...
Champeney, D. C. (April 1997). "Molar conductance of aqueous solutions of sodium, potassium, and nickel trifluoromethanesulfonate at 25‡C". Journal of Solution...