powder,-200 mesh,99.9%tracemetalsbasis , 13812-81-2
Synonym(s):
Distrontium diphosphate;Distrontium pyrophosphate;Strontium diphosphate;Strontium metaphosphate oxide
CAS NO.：13812-81-2
Empirical Formula: H6O7P2Sr
Molecular Weight: 267.61
MDL number: MFCD00799869
EINECS: 237-461-4
| Pack Size | Price | Stock | Quantity |
| 25g | RMB819.62 | In Stock |
|
| others | Enquire |
PRODUCT Properties
| Melting point: | >380°C |
| form | powder |
| EPA Substance Registry System | Diphosphoric acid, strontium salt (1:2) (13812-81-2) |
Description and Uses
Strontium pyrophosphate has the molecular formula of Sr2P2O7 and the molecular weight of 349.1833 g/mol.
Its CAS number is 765305-66-6. It may be prepared by
the solid-state reaction of the dibasic orthophosphate,
or alternately by the precipitation of a soluble Mg salt
with aqueous pyrophosphoric acid:
2SrHPO4 + heat ? Sr2P2O7 +H2O
SrCl2 (aq) +H4P2O7 (aq) ? Sr2P2O7 (solid) + 2HCl (aq)
The solution method produces a hemihydrate,
Sr2P2O7·1/2H2O. This salt decomposes at 575°C to
form β-Sr2P2O7. The transition to the high temperature
form, α-Sr2P2O7 takes place at about 760–780°C.
In the Sr2P2O7 system, the unit-cell parameters of
orthorhombic β-Sr2P2O7 are: a = 8.9839?, b = 13.163 ?,
and c = 5.403 ?. The crystallographic data of Sr2P2O7
are reported to contain two types of sites for Sr2+ ions
in the unit cell.
Sr2P2O7 is a promising phosphor host material; showing different emission properties upon doping with rare earth and other elements. Example Eu(2+) doped Sr2P2O7 shows blue emission; Sr2P2O7 doped with Bi(2+) is a red phosphor.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26 |
| WGK Germany | 3 |
