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CAS No 10361-03-2 , Sodium metaphosphate

  • Name: Sodium metaphosphate
  • Synonyms: Sodium metaphosphate; Sodium phosphate (NaPO3); Poly(sodium metaphosphate); Insoluble metaphosphate;Sporix; Maddrell's salt; Kurrol's salt; Sodium Kurrol's salt;
  • CAS Registry Number:
  • Melting Point: 600 °C
  • Flash Point: °C
  • Boiling Point: °Cat760mmHg
  • Density: 2.181
  • Safety Statements: Moderately toxic by intraperitoneal route. When heated to decomposition it emits toxic fumes of Na2O and POx. See also PHOSPHATES.
  • Flash Point: °C
  • EINECS: 233-782-9
  • Molecular Weight: 101.961731
  • InchiKey: AQMNWCRSESPIJM-UHFFFAOYSA-M
  • InChI: InChI=1S/Na.HO3P/c;1-4(2)3/h;(H,1,2,3)/q+1;/p-1
  • Molecular Formula: NaO3P
  • Molecular Structure:CAS No:10361-03-2 Sodium metaphosphate

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References of Sodium metaphosphate
Title: Maddrell's Salt
CAS Registry Number: 10361-03-2
Synonyms: Polymeric sodium metaphosphate
Literature References: Upon heating NaH2PO4 or NaNH4HPO4 to 250° and then slowly to 350°, first Na2H2P2O7 and then the insol Maddrell's salt is obtained, which is stable to about 500°; at 505° it changes to sodium trimetaphosphate, and above 607° to sodium hexametaphosphate. According to Maddrell, Ann. 61, 63 (1847) the salt may be prepd by heating two parts NaNO3 with one part H3PO4. An improved procedure is described by v. Knorre, Z. Anorg. Chem. 24, 397 (1900). Structure: Jost, Acta Crystallogr. 16, 428 (1963). Reviews: see Sodium Metaphosphate.
Properties: White powder. Practically insol in water and in aq solns of pyrophosphates and hexametaphosphates. Sol in mineral acids. Does not form complexes with Fe(II), Fe(III), U(IV) salts.
Use: In dentifrices, polishing agents, abrasive detergents.