distrontium diphosphate

Base Information

• Chemical Name: distrontium diphosphate
• CAS No.: 13812-81-2
• Molecular Formula: H4O7 P2 . 2 Sr
• Molecular Weight: 349.183322
• Mol file: 13812-81-2.mol

Synonyms:Pyrophosphoricacid, strontium salt (1:2) (8CI); Strontium pyrophosphate (6CI,7CI);Distrontium diphosphate; Distrontium pyrophosphate; Strontium diphosphate(Sr2P2O7); Strontium metaphosphate oxide (Sr2(PO3)2O); Strontium phosphate(Sr2P2O7); Strontium pyrophosphate (Sr2P2O7)

Chemical Property of distrontium diphosphate

Chemical Property:

• Melting Point: >380°C
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• PSA: 155.23000
• Density: g/cm³
• LogP: 0.94120

Purity/Quality:

98%Min ^*data from raw suppliers

Strontium pyrophosphate powder, -200mesh, 99.9% trace metals basis ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26

MSDS Files:

SDS file from LookChem

Useful:

• 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). 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.