Potassium nitrateA naturally occurring mineral source of nitrogen

Potassium nitrate (CAS 7757-79-1)

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Synonym: Saltpeter
Application: A naturally occurring mineral source of nitrogen
CAS Number: 7757-79-1
Purity: ≥99%
Molecular Weight: 101.10
Molecular Formula: KNO3
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* Refer to Certificate of Analysis for lot specific data (including water content).
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Potassium nitrate is a naturally occurring mineral source of nitrogen. In plants, this compound has been tested to alleviate NaCl stress symptoms. Mechanistic studies suggest that this may be achieved through reduction of electrolyte leakage, malondialdehyde and soluble sugar contents and improving the activities of antioxidant enzymes.


1. Tam, L. 2001. Quintessence Int. 32: 766-770. PMID: 11820045
2. Haywood, V.B., et al. 2005. J Clin Dent. 16: 17-22. PMID: 15974219
3. Zheng, Y., et al. 2008. J. Plant Physiol. 165: 1455-1465. PMID: 18313170
4. Rodrigues, M.S., et al. 2010. Bioresour. Technol. 101: 4491-4498. PMID: 20153635

Physical State :
Solubility :
Soluble in water, glycerol, and liquid ammonia.
Storage :
Store at room temperature
Melting Point :
334° C (lit.)
Density :
2.11 g/cm3
Ki Data :
α-carbonic anhydrase: Ki= 0.71 mM (European seabass ); CA I: Ki= 7 mM (human); CA V: Ki= 16 mM (human); CA II: Ki= 35 mM (human); CA IX: Ki= 46 mM (human)
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
WGK Germany :
PubChem CID :
Merck Index :
14: 7648
MDL Number :
EC Number :

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