| Identification | Back Directory | [Name]
BARIUM METAPHOSPHATE | [CAS]
13762-83-9 | [Synonyms]
BARIUM METAPHOSPHATE
barium dimetaphosphate
Partial barium phosphate
Bariummetaphosphate,90+%
Bismetaphosphoric acid barium salt
barium(2+):dioxido(oxo)phosphanium
BARIUM METAPHOSPHATE ISO 9001：2015 REACH
Metaphosphoric acid (HPO3), barium salt (8CI,9CI)
BARIUM METAPHOSPHATEBARIUM METAPHOSPHATEBARIUM METAPHOSPHATEBARIUM METAPHOSPHATE | [EINECS(EC#)]
237-362-6 | [Molecular Formula]
BaO6P2 | [MDL Number]
MFCD00061417 | [MOL File]
13762-83-9.mol | [Molecular Weight]
295.27 |
| Chemical Properties | Back Directory | [Appearance]
White powder. Slowly soluble in acids; insoluble in water. | [Melting point ]
1560°C | [solubility ]
H2O: insoluble(lit.) | [form ]
Powder | [Water Solubility ]
Insoluble in water. Soluble in acids by a slow dissolution | [Uses]
Glasses, porcelains, and enamels. | [CAS DataBase Reference]
13762-83-9 |
| Hazard Information | Back Directory | [Chemical Properties]
White powder. Slowly soluble in acids; insoluble in water. | [Preparation]
Barium metaphosphate can be prepared by the solidstate
reaction of metaphosphoric acid and the
hydroxide, oxide or carbonate of barium:
BaCO3 + HPO3 + heat ? Ba(PO3)2 +H2O + CO2
The best temperature to use is about 700°C. It has the
CAS number of 13762-83-9 and the molecular weight of
295.2709 g/mol. If diammonium phosphate is used
instead of solid metaphosphoric acid, the product is
not pure. Colored glasses are obtained caused by the
reduction of P-atoms in the phosphate anion by
hydrogen released from NH3 to form colloidal dispersions
of P4 which produce various colors in the glass.
b-Ba(PO3)2 is the final product. This compound can
also be prepared by the aqueous reactions:
NaPO3 (aq) + BaCl2 (aq) ? Ba(PO3)2 (solid) + NaCl (aq)
or
Ba(OH)2 (solid) + 2HPO3 (aq) ? Ba(PO3)2 (solid)
+ 2H2O
The dissolution and reaction involving HPO3 are
slow and should be carried out in a hot solution. Evaporation
at a low temperature (<15°C) serves to form the
crystals. The product involves several hydrates depending
upon the conditions of precipitation. Anhydrous
barium metaphosphate is a white porous powder or
granular material that is insoluble in water. |
|
|