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ANHIDRIDO FOSFORICO [1 record]

Record 1 2010-12-23

English

Subject field(s)
  • Chemistry
Universal entry(ies)
P2O5
formula, see observation
1314-56-3
CAS number
DEF

A compound known in various polymeric forms ... that is obtained usually by burning phosphorus in an excess of dry air and occurs as a white powder that reacts vigorously and sometimes explosively with water to form phosphoric acids ... and is used chiefly as a drying agent, as a condensing agent in organic synthesis, and in making phosphoric acids and derivatives ...

OBS

Chemical formula: P205

French

Domaine(s)
  • Chimie
Entrée(s) universelle(s)
P2O5
formula, see observation
1314-56-3
CAS number
CONT

Les principales [combinaisons de phosphore avec l'oxygène] sont l'anhydride phosphoreux et l'hémipentaoxyde de phosphore ou anhydride phosphorique. On les obtient par combustion du phosphore en présence d'air; pour l'anhydride phosphorique, on utilise un excès d'air. [Il] est solide, blanc, très avide d'eau, ce qui le fait employer comme desséchant énergique.

OBS

Formule chimique : P205

Spanish

Campo(s) temático(s)
  • Química
Entrada(s) universal(es)
P2O5
formula, see observation
1314-56-3
CAS number
DEF

Polvo blanco. Absorbe la humedad atmosférica, formando ácido metapiro-u orto-fosfórico. Fuerte irritante. Inflamable.

OBS

Fórmula química: P205

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