Sodium pyrophosphate dibasicAnhydrous form, pyrophosphate salt used in buffers

Sodium pyrophosphate dibasic (CAS 7758-16-9)

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Synonym: Disodium dihydrogen pyrophosphate; Sodium diphosphate dibasic
Application: Anhydrous form, pyrophosphate salt used in buffers
CAS Number: 7758-16-9
Molecular Weight: 221.94
Molecular Formula: H2P2O72Na
* Refer to Certificate of Analysis for lot specific data (including water content).
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Sodium pyrophosphate dibasic also called, disodium pyrophosphate or DSPP (sc-251047) is used in the laboratory as a buffering agent. DSPP has been used as a chelating agent in antimicrobial studies. Tetrabasic pyrophosphate or TSPP (sc-203404; sc-236921) has shown to be useful in the preparation of an EDTA-sodium pyrophosphate extraction buffer for microcystin analysis of soil samples.


1. Lewis, J.M. and Hartman, S.C. 1978. Meth. Enzymol. 51: 171-178. PMID: 692384
2. Kisselev, L.L., et al. 1979. Meth. Enzymol. 59: 234-257. PMID: 86935
3. Boland, J.S., et al. 2004. J. Food Prot. 67: 285-294. PMID: 14968960
4. Chen, W., et al. 2006. Environ. Pollut. 143: 241-246. PMID: 16413641
5. Ozcan, T., et al. 2008. J. Dairy Sci. 91: 4492-4500. PMID: 19038924
6. Kim, S.J., et al. 2010. J Toxicol Sci. 35: 555-562. PMID: 20686342

Appearance :
Physical State :
Solubility :
Soluble in water (170 mg/ml at 20° C). Insoluble in alcohol , and ammonia.
Storage :
Store at room temperature
Melting Point :
>450° C
Density :
~0.8-1.2 g/cm3 at 20° C
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
WGK Germany :
PubChem CID :
Merck Index :
14: 8572
MDL Number :
EC Number :

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Certificate of Analysis

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