BARIUM PYROPHOSPHATE
Synonym(s):Barium diphosphate;Barium phosphate;Dibarium diphosphate;Dibarium pyrophosphate
- CAS NO.：13466-21-2
- Empirical Formula: Ba2O7P2
- Molecular Weight: 448.6
- MDL number: MFCD00049850
- EINECS: 236-716-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:13:13
What is BARIUM PYROPHOSPHATE?
Description
Barium pyrophosphate has the molecular formula of
Ba2P2O7 and the molecular weight of 448.5973 g/mol. It
has the CAS number of 13466-21-2 and may be prepared
by the solid-state reaction of the dibasic orthophosphate,
or alternately by the precipitation of a soluble Ba salt
with aqueous pyrophosphoric acid:
2Ba HPO4 + heat ? Ba2P2O7 +H2O
BaCl2 (aq) +H4P2O7 (aq) ? Ba2P2O7 (s) + 2HCl (aq)
The solution method produces a dihydrate,
Ba2P2O7·2H2O.
Chemical properties
White powder. Soluble in acids and ammonium salts; very slightly soluble in water.
The Uses of BARIUM PYROPHOSPHATE
Ba2P2O7 is a promising phosphor host material, showing different emission properties upon doping with rare earth and other elements. Bi doped Ba2P2O7 crystals exhibit broadband NIR photoluminescence.
Properties of BARIUM PYROPHOSPHATE
| Density | 3.900 |
| solubility | soluble in acid solutions |
| form | white powder |
| color | white |
| Water Solubility | 0.01 g/100mL H2O; soluble acids, NH4 salts [CRC10] [HAW93] |
| Solubility Product Constant (Ksp) | pKsp: 10.5 |
| CAS DataBase Reference | 13466-21-2 |
| EPA Substance Registry System | Diphosphoric acid, barium salt (1:2) (13466-21-2) |
Safety information for BARIUM PYROPHOSPHATE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P271:Use only outdoors or in a well-ventilated area. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. |
Computed Descriptors for BARIUM PYROPHOSPHATE
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