Other grades of this product :
| distrontium diphosphate Basic information |
| Product Name: | distrontium diphosphate | | Synonyms: | Strontium diphosphate;Strontium metaphosphate oxide;Strontium pyrophosphate;distrontium diphosphate;Distrontium pyrophosphate;distrontium,phosphonato phosphate;Strontium pyrophosphate powder, -200 mesh, 99.9% trace metals basis | | CAS: | 13812-81-2 | | MF: | H6O7P2Sr | | MW: | 267.61 | | EINECS: | 237-461-4 | | Product Categories: | | Mol File: | 13812-81-2.mol |
| distrontium diphosphate Chemical Properties |
| Hazard Codes | Xi | | Risk Statements | 36/37/38 | | Safety Statements | 26 | | WGK Germany | 3 |
| distrontium diphosphate Usage And Synthesis |
| Description | 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. | | Uses | Strontium pyrophosphate has long been used as
a matrix for phosphors used in fluorescent lamps in
the lamp industry. These phosphors have
strong absorption in the near UV region, which is suitable
for excitation of ultraviolet light-emitting diodes
(UV-LEDs). | | Uses | 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. |
| distrontium diphosphate Preparation Products And Raw materials |
|
日本语
한국어
Français
Deutsch
España
Türkiye