BARIUM METAPHOSPHATE Chemical Properties

Melting point:

1560 °C (lit.)

solubility 

H2O: insoluble(lit.)

form 

Powder

Water Solubility 

Insoluble in water. Soluble in acids by a slow dissolution

InChI

1S/Ba.2HO3P/c;2*1-4(2)3/h;2*(H,1,2,3)/q+2;;/p-2

InChIKey

XNJIKBGDNBEQME-UHFFFAOYSA-L

SMILES

[Ba++].[O-]P(=O)=O.[O-]P(=O)=O

CAS DataBase Reference

13762-83-9

Safety Information

Hazard Codes 

Xn

Risk Statements 

20/22

Safety Statements 

28

RIDADR 

UN 1564 6.1/PG 3

WGK Germany 

1

F 

3

HazardClass 

6.1

PackingGroup 

III

Storage Class

6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects

Hazard Classifications

Acute Tox. 4 Inhalation
Acute Tox. 4 Oral

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

BARIUM METAPHOSPHATE Usage And Synthesis

Chemical Properties

White powder. Slowly soluble in acids; insoluble in water.

Uses

Glasses, porcelains, and enamels.

Uses

Barium metaphosphate, used in glasses, porcelains, and enamels, as a flame retardant and in phosphors applications.

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.

BARIUM METAPHOSPHATE(13762-83-9)Related Product Information

• Orthophosphorus acid
• Magnesium fluoride
• Phosphotungstic acid hydrate
• Strontium carbonate
• Magnesium fluosilicate
• Barium titanate
• Metaphosphoric acid
• LITHIUM METABORATE
• Magnesium titanium oxide
• Aluminum metaphosphate
• SODIUM METASILICATE PENTAHYDRATE
• AMMONIUM (META)TUNGSTATE HYDRATE
• Sodium metavanadate
• Barium carbonate
• Calcium Perphosphate
• Magnesium hypophosphate
• Barium Peroxyphosphate
• Strontium Peroxyphosphate