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CAS No 7601-54-9 , trisodium

  • Name: trisodium
  • Synonyms: Trinatriumphosphat; Tertiary sodium phosphate;trisodium; Nutrifos STP;TRISODIUM PHOSPHATE; Tribasic sodium phosphate; Tromete;phosphate; Dri-Tri; Oakite; Sodium phosphate;
  • CAS Registry Number:
  • Transport: UN 9148/3262
  • Melting Point: 73.3-76.7
  • Density: 2.536 g/cm3 (17.5 C)
  • Safety Statements: R34
  • Hazard Symbols: C: Corrosive;
  • EINECS: 231-509-8
  • Molecular Weight: 163.94067
  • InchiKey: RYFMWSXOAZQYPI-UHFFFAOYSA-K
  • InChI: InChI=1S/3Na.H3O4P/c;;;1-5(2,3)4/h;;;(H3,1,2,3,4)/q3*+1;/p-3
  • Risk Statements: S26;S36/37/39;S45
  • Molecular Formula: Na3O4P
  • Molecular Structure:CAS No:7601-54-9 trisodium

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References of trisodium
Title: Sodium Phosphate, Tribasic
CAS Registry Number: 7601-54-9
Synonyms: Trisodium orthophosphate; trisodium phosphate; TSP
Trademarks: Oakite
Molecular Formula: Na3O4P
Molecular Weight: 163.94
Percent Composition: Na 42.07%, O 39.04%, P 18.89%
Line Formula: Na3PO4
Literature References: Crystallizes with 8 and 12 mols of H2O.
 
Derivative Type: Dodecahydrate
Properties: Colorless or white crystals. When rapidly heated melts at ~75°. Does not lose the last mol of water even on moderate ignition. d 1.6. Sol in 3.5 parts water, 1 part boiling water; insol in alcohol. The aq soln is strongly alkaline. pH of 0.1% soln: 11.5; of 0.5% soln: 11.7; of 1.0% soln: 11.9. Technical crystals are sometimes made with excess alkali to prevent caking and give more alkaline solutions. LD50 orally in rats: 7.40 g/kg, H. F. Smyth et al., Am. Ind. Hyg. Assoc. J. 30, 470 (1969).
Melting point: When rapidly heated melts at ~75°
Density: d 1.6
Toxicity data: LD50 orally in rats: 7.40 g/kg, H. F. Smyth et al., Am. Ind. Hyg. Assoc. J. 30, 470 (1969)
 
Use: In photographic developers; clarifying sugar; removing boiler scale, softening water; manuf paper; laundering; tanning leather; in detergent mixture.