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Phosphonitrilic chloride trimer

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Phosphonitrilic chloride trimer Basic information
Phosphonitrilic chloride trimer Chemical Properties
Safety Information
  • Hazard Codes C
  • Risk Statements 14-34-20/21/22
  • Safety Statements 26-36/37/39-45-7/8-41
  • RIDADR UN 3260 8/PG 2
  • WGK Germany 3
  • 21
  • TSCA Yes
  • HazardClass 8
  • PackingGroup II
  • HS Code 28530090
MSDS
Phosphonitrilic chloride trimer Usage And Synthesis
  • Chemical Propertieswhite crystalline powder
  • Purification MethodsPurify it by zone melting, by crystallisation from pet.ether, n-hexane or *benzene, and by sublimation. [van der Huizen et al. J Chem Soc, Dalton Trans 1311 1986, Meirovitch et al. J Phys Chem 88 1522 1984, Alcock et al. J Am Chem Soc 106 5561 1984; Winter & van de Grampel J Chem Soc, Dalton Trans 1269 1986.] Phosphoric acid [7664 -38 -2] M 98.0, m 42.3o, pK 1 2.15, pK 2 7.21, pK 3 12.37. Pyrophosphate can be removed from phosphoric acid by diluting with distilled H2O and refluxing overnight. By cooling to 11o and seeding with crystals obtained by cooling a few millilitres in a Dry-ice/acetone bath, 85% orthophosphoric acid crystallises as H3PO4.H2O. The crystals are collected on a sintered glass filter. [Weber & King Inorg Synth I 101 1939.]
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