EU/US Properties Organoleptics Cosmetics Suppliers Safety Safety in use Safety references References Other Blenders Uses Occurrence Synonyms Articles Notes

potassium nitrate
nitric acid potassium salt (1:1)

Supplier Sponsors

CAS Number: 7757-79-1Picture of molecule3D/inchi
ECHA EINECS - REACH Pre-Reg:231-818-8
Molecular Weight:101.10290000
Formula:K N O3
NMR Predictor:Predict (works with chrome or firefox)
Category:color fixatives and preservative agents
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar:Search
Google Books:Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Perfumer and Flavorist:Search
Google Patents:Search
US Patents:Search
EU Patents:Search
Pubchem Patents:Search
 FDA/DG SANTE Petitions, Reviews, Notices:
EU SANCO Nitrates View - review
EU SANCO Potassium nitrate View - review
JECFA Food Additive: Potassium Nitrate
GSFA Codex: Potassium nitrate (252)
DG SANTE Food Additives:potassium nitrate
FDA Mainterm (SATF):7757-79-1 ; POTASSIUM NITRATE
FDA Regulation:
Subpart B--Food Preservatives
Sec. 172.160 Potassium nitrate.

Subpart B--Specific Prior-Sanctioned Food Ingredients
Sec. 181.33 Sodium nitrate and potassium nitrate.

Subpart B--Specific Prior-Sanctioned Food Ingredients
Sec. 181.34 Sodium nitrite and potassium nitrite.
Physical Properties:
Appearance:white crystalline powder (est)
Assay: 99.00 to 100.00
Food Chemicals Codex Listed: No
Melting Point: 334.00 °C. @ 760.00 mm Hg
Boiling Point: 83.00 °C. @ 760.00 mm Hg (est)
Vapor Pressure:49.800000 mmHg @ 25.00 °C. (est)
Flash Point: 32.00 °F. TCC ( 0.00 °C. ) (est)
logP (o/w): -0.129 (est)
Soluble in:
 water, 5.499e+005 mg/L @ 25 °C (est)
 alcohol, slightly
Organoleptic Properties:
Odor Description:at 100.00 %. odorless
Odor and/or flavor descriptions from others (if found).
Cosmetic Information:
CosIng:cosmetic data
Cosmetic Uses: oral care agents
soothing agents
Allan Chemical
Potassium Nitrate
American Elements
Potassium Nitrate 99%
Odor: characteristic
Use: Potassium Nitrate is a highly water soluble crystalline Potassium source for uses compatible with nitrates and lower (acidic) pH. Nitrate compounds are generally soluble in water. Nitrate materials are also oxidizing agents. When mixed with hydrocarbons, nitrate compounds can form a flammable mixture. Nitrates are excellent precursors for production of ultra high purity compounds and certain catalyst and nanoscale(nanoparticles and nanopowders) materials. All metallic nitrates are inorganic salts of a given metal cation and the nitrate anion. The nitrate anion is a univalent (-1 charge) polyatomic ion composed of a single nitrogen atom ionically bound to three oxygen atoms (Symbol: NO3) for a total formula weight of 62.05. Potassium Nitrate is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. We also produce Potassium Nitrate Solution. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards.
American International Chemical, LLC.
Barium & Chemicals
Potassium Nitrate High Purity Grade
Odor: characteristic
Use: pyrotechnics, explosives, matches, and specialty fertilizers. Other uses include modifying tobacco, glass manufacturing, metallurgy, solid rocket propellants and preservatives.
Bristol Botanicals
Potassium Nitrate
Charkit Chemical
Charkit Chemical
Covalent Chemical
Potassium Nitrate
ECSA Chemicals
Potassium Nitrate
Company Profile
Glentham Life Sciences
Potassium nitrate, 99%
Glentham Life Sciences
Potassium nitrate, with ACA
Hebei Oukai Biotechnology
For experimental / research use only.
Potassium Nitrate
Jost Chemical
Potassium Nitrate ACS Crystals
Jost Chemical
Potassium Nitrate FCC Crystals
Jost Chemical
Potassium Nitrate USP/EP Granulated
Kraft Chemical
Potassium Nitrate
Penta International
Penta International
For experimental / research use only.
Potassium Nitrate ReagentPlus®, ≥99.0%
Universal Preserv-A-Chem Inc.
Universal Preserv-A-Chem Inc.
Odor: characteristic
Use: In the process of food preservation, potassium nitrate has been a common ingredient of salted meat since the Middle Ages, but its use has been mostly discontinued due to inconsistent results compared to more modern nitrate and nitrite compounds. Even so, saltpeter is still used in some food applications, such as charcuterie and the brine used to make corned beef.
Universal Preserv-A-Chem Inc.
Universal Preserv-A-Chem Inc.
Odor: characteristic
Use: Used in some toothpastes for sensitive teeth.[30] Recently, the use of potassium nitrate in toothpastes for treating sensitive teeth has increased and it may be an effective treatment. It also combats high blood pressure and was once used as a hypotensive.
Wedor Corporation
Safety Information:
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
oral-rat LD50 3750 mg/kg
Nippon Yakurigaku Zasshi. Japanese Journal of Pharmacology. Vol. 81, Pg. 469, 1983.

oral-rabbit LD50 1901 mg/kg
Southwestern Veterinarian. Vol. 27, Pg. 246, 1974.

intravenous-cat LDLo 100 mg/kg
"Abdernalden's Handbuch der Biologischen Arbeitsmethoden." Vol. 4, Pg. 1289, 1935.

Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
Safety in Use Information:
color fixatives and preservative agents
Recommendation for potassium nitrate usage levels up to:
 not for fragrance use.
Recommendation for potassium nitrate flavor usage levels up to:
 not for flavor use.
Safety References:
European Food Safety Authority (EFSA) reference(s):

Opinion of the Scientific Panel on biological hazards (BIOHAZ) related to the effects of Nitrites/Nitrates on the Microbiological Safety of Meat Products
View page or View pdf

Re-evaluation of sodium nitrate (E 251) and potassium nitrate (E 252) as food additives
View page or View pdf

EPI System: View
Daily Med:search
NIOSH International Chemical Safety Cards:search
NLM Hazardous Substances Data Bank:Search
Chemical Carcinogenesis Research Information System:Search
Cancer Citations:Search
Toxicology Citations:Search
Env. Mutagen Info. Center:Search
NLM Developmental and Reproductive Toxicity:Search
EPA Substance Registry Services (TSCA):7757-79-1
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :24434
National Institute of Allergy and Infectious Diseases:Data
WGK Germany:1
potassium nitrate
EPA/NOAA CAMEO:hazardous materials
 potassium nitrate
NIST Chemistry WebBook:Search Inchi
Canada Domestic Sub. List:7757-79-1
Pubchem (cid):24434
Pubchem (sid):134989834
Other Information:
(IUPAC):Atomic Weights of the Elements 2009
(IUPAC):Atomic Weights of the Elements 2009 (pdf)
Videos:The Periodic Table of Videos
tgsc:Atomic Weights use for this web site
(IUPAC):Periodic Table of the Elements
FDA Substances Added to Food (formerly EAFUS):View
KEGG (GenomeNet):C13557
HMDB (The Human Metabolome Database):Search
Export Tariff Code:2834.21.0000
FDA Listing of Food Additive Status:View
Household Products:Search
RSC Learn Chemistry:View
•ready-to-use cartridge formulated with sulfur and carbon; designed to be ignited and placed in pest burrow. •"potnit" is trade name for potassium nitrate containing 13% nitrogen, 44% potash, & 0.75% magnesium sulfate. •grade: commercial; cp; fcc. •available as acs grade; purified grades; standard, prill, crystalline grades •hitec heat-transfer salt mfr by dupont is an eutectic mixture of water-sol inorg salts: potassium nitrate (53%), sodium nitrite (40%), and sodium nitrate (7%). •chile saltpeter is sodium nitrate containing some potassium nitrate and sodium iodate. •nitrate of potash is chiefly the potassium salt of nitric acid. it shall contain not less than 12% nitrate nitrogen & 44% sol potash (k2o). •pure potassium nitrate contains 13.68% nitrogen & 46.58% potash. domestic productavailable in prilled or std crystalline form...analysis: nitrogen 13.91%; potash 44.13%; chlorine 0.18%; acid insol. 0.10%; & moisture 0.08%.
Potential Blenders and core components note
None Found
Potential Uses:
None Found
Occurrence (nature, food, other):note
 not found in nature
 sage plant
Search Trop Picture
 nitrate of potash
 nitric acid potassium salt
 nitric acid potassium salt (1:1)
 nitric acid, potassium salt
 salt peter


PubMed:Remobilisation of silver and silver sulphide nanoparticles in soils.
PubMed:Inorganic nitrate and beetroot juice supplementation reduces blood pressure in adults: a systematic review and meta-analysis.
PubMed:Ammonium as sole N source improves grain quality in wheat.
PubMed:Enhanced production of bacterial cellulose by using Gluconacetobacter hansenii NCIM 2529 strain under shaking conditions.
PubMed:Assessing the effect, on animal model, of mixture of food additives, on the water balance.
PubMed:[Stevens-Johnson's syndrome following ingestion of gunpowder].
PubMed:Optimization of Fermentation Medium for the Production of Glucose Isomerase Using Streptomyces sp. SB-P1.
PubMed:Optimization of xylanase production by Streptomyces sp. P12-137 using response surface methodology and central composite design.
PubMed:Photodegradation of hexythiazox in different solvent systems under the influence of ultraviolet light and sunlight in the presence of TiO2, H2O2, and KNO3 and identification of the photometabolites.
PubMed:Determination of sulfite by pervaporation-flow injection with amperometric detection using copper hexacyanoferrate-carbon nanotube modified carbon paste electrode.
PubMed:Microbial transglutaminase for cold-set binding of unsalted/salted pork models and restructured dry ham.
PubMed:Differential micronuclei induction in human lymphocyte cultures by imidacloprid in the presence of potassium nitrate.
PubMed:Corrosion behaviour of tinplate cans in contact with tomato pur├ęe and protective (inhibiting) substances.
PubMed:Photochemical behaviour of musk tibetene. A chemical and kinetic investigation.
PubMed:Cytogenetic study in cultured human lymphocytes treated with three commonly used preservatives.
PubMed:Radiocesium activity reduction in boar meat by brining.
PubMed:A statistical approach using L(25) orthogonal array method to study fermentative production of clavulanic acid by Streptomyces clavuligerus MTCC 1142.
PubMed:Genotoxicity testing of four food preservatives and their combinations in the Drosophila wing spot test.
PubMed:Effect of culture media and conditions on polyunsaturated fatty acids production by Mortierella alpina.
PubMed:Inhibition of Listeria monocytogenes by enterocin EJ97 produced by Enterococcus faecalis EJ97.
PubMed:Protective effect of dietary nitrate on experimental gastritis in rats.
PubMed:Inhibition of Clostridium tyrobutyricum in Vidiago cheese by Lactococcus lactis ssp. lactis IPLA 729, a nisin Z producer.
PubMed:Traceability of aquatic animals.
PubMed:Lack of correlation between cigarette mainstream smoke particulate phase radicals and hydroquinone yield.
PubMed:Characterisation of lactic acid bacteria from spoiled, vacuum-packaged, cold-smoked rainbow trout using ribotyping.
PubMed:Reduction of the nociceptive response to gastric distension by nitrate ingestion in rats.
PubMed:The spoilage flora of vacuum-packaged, sodium nitrite or potassium nitrate treated, cold-smoked rainbow trout stored at 4 degrees C or 8 degrees C.
PubMed:Sodium nitrite and potassium nitrate in control of nonproteolytic Clostridium botulinum outgrowth and toxigenesis in vacuum-packed cold-smoked rainbow trout.
PubMed:Faulty sausage production causing methaemoglobinaemia.
PubMed:Plasma nitrate as an index of nitric oxide formation in man: analyses of kinetics and confounding factors.
PubMed:Experimental data on the effect of nitrates entering the organism with the drinking water.
PubMed:Additives in finnish sausges and other meat products.
PubMed:[Effect of preservatives on survival of Campylobacter jejuni in ground pork meat].
PubMed:Isolation of astaxanthin over-producing mutants of Phaffia rhodozyma and their fermentation kinetics.
PubMed:Inactivation of Yersinia enterocolitica by nitrite and nitrate in food.
PubMed:The effect of exercise associated with acute poisoning with potassium nitrate and sodium nitrite on the processes of intestinal absorption of D-xylose in rats.
PubMed:The effect of exercise associated with subchronic poisoning with potassium nitrate and sodium nitrite on the processes of intestinal absorption of D-xylose in rats.
PubMed:The effect of acute poisoning with potassium nitrate and sodium nitrite on the processes of intestinal absorption of D-xylose in rats.
PubMed:The effect of subchronic poisoning with potassium nitrate and sodium nitrite on the processes of intestinal absorption of D-xylose in rats.
PubMed:The history of nitrite in human nutrition: a contribution from German cookery books.
PubMed:[Nitrate and nitrite levels in daily food rations of children from the rural Puławy regions].
PubMed:[Effect of different amounts of KNO3 on the quality of "Zuławski" cheese. II. Microbiological and organoleptic values after addition of different amounts of KNO3].
PubMed:Activity of cathepsin D as affected by chemical and physical dry-curing parameters.
PubMed:A synthetic, selective culture medium for Pseudomonas aeruginosa.
PubMed:[Effect of a differentiated additive KNO3 on the quality of Zuławski cheese. I. Nitrate changes in maturing Zuławski cheese].
PubMed:Evaluation of precision estimates for fiber-dimensional and electrical hygrometers for water activity determinations.
PubMed:[Effect of components of curing mixtures on the antagonistic properties of enterococci and other bacteria isolated from cured meat].
PubMed:The viability of Cysticercus cellulosae in Thai native food (NHAM).
PubMed:[Curing from the current viewpoint].
PubMed:[Studies on the pharmacological bases of fetal toxicity of drugs. III. Fetal toxicity of potassium nitrate in 2 generations of rats].
PubMed:Potassium nitrate and nitrosamine formation.
PubMed:Analysis of foods for lead, cadmium, copper, zinc, arsenic, and selenium, using closed system sample digestion: collaborative study.
PubMed:Daily dietary intakes of nitrate, nitrite and volative N-nitrosamines in the Netherlands using the duplicate portion sampling technique.
PubMed:Use of nitrates and nitrites as food additives in Nordic countries.
PubMed:The intake of nitrate, nitrite and volatile N-nitrosamines and the occurrence of volatile N-nitrosamines in human urine and veal calves.
PubMed:[Methemoglobinemias caused by ingestion of nitrites and nitrates].
PubMed:[Residual nitrite and nitrate content in French cooked hams and shoulders].
PubMed:Determination of heavy metals in foods by anodic stripping voltammetry after sample decomposition with sodium and potassium nitrate fusion.
when combined with charcoal and sulfur it can form explosive agents. Preservative for cod roe, cured red meat and poultry products
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