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Chemical compound
Potassium nitrite (distinct from potassium nitrate) is the inorganic compound with the chemical formula KNO2. It is an ionic salt of potassium ions K+
Potassium_nitrite
Chemical compound
(1,022–1,454 °F), potassium nitrate reaches a temperature-dependent equilibrium with potassium nitrite: 2 KNO3 ⇌ 2 KNO2 + O2 Potassium nitrate has a wide
Potassium_nitrate
Chemical compound
caused by adding nitrites to meat. Nitrite has the E number E250. Potassium nitrite (E249) is used in the same way. It is approved for usage in the European
Sodium_nitrite
Chemical compound
barium or lead nitrite with ammonium sulfate, or silver nitrite with ammonium chloride, or ammonium perchlorate with potassium nitrite. The precipitate
Ammonium_nitrite
Chemical compound
Potassium hexanitritocobaltate(III) is a salt with the formula K3[Co(NO2)6]. It is a yellow solid that is poorly soluble in water. The compound finds
Potassium hexanitritocobaltate(III)
Potassium_hexanitritocobaltate(III)
Substance used for chemical testing
mixture of potassium nitrite and concentrated sulfuric acid. 1 g of potassium nitrite is used for every 10 mL of sulfuric acid. Potassium nitrite may also
Liebermann_reagent
Chemical compound
precipitate of potassium sulfate and lithium potassium sulfate after further evaporation and extraction with absolute alcohol. Lithium nitrite is exceptionally
Lithium_nitrite
Chemical data page
data general note. Potassium nitrate Nitric acid Niter Black powder Sodium nitrate Sodium nitrite Potassium nitrite PubChem. "Potassium Nitrate". pubchem
Potassium_nitrate_(data_page)
Sausage production processes
ppm nitrites. Potassium nitrite and potassium nitrate additions allow the production of sausages with lower levels of sodium. When using the potassium form
Sausage_making
Codes for food additives
in the EU, and has never been permitted for human consumption. Sodium nitrite (E250) is toxic. Sulfuric acid (E513) is harmful to organic tissues. Not
E_number
Chemical compound
For example, sodium and potassium nitrite reacting with iodomethane would produce mostly nitromethane, with methyl nitrite as the minor product. However
Methyl_nitrite
Chemical compound
monoprotic acid known only in solution, in the gas phase, and in the form of nitrite (NO− 2) salts. It was discovered by Carl Wilhelm Scheele, who called it
Nitrous_acid
Pork from a leg cut that has been preserved by wet or dry curing
modern dry cure hams also use nitrites (either sodium nitrite or potassium nitrite), which are added along with the salt. Nitrites are used because they prevent
Ham
Polyatomic ion (NO3, charge –1) found in explosives and fertilisers
is catalytically reduced into nitrite (NO2−) by the enzymatic activity of bacteria. In aqueous solution, dissolved nitrite, N(III), is a more powerful oxidizer
Nitrate
Chemical compound
(September 1980). "Effects of various concentrations of sodium nitrite and potassium sorbate on Clostridium botulinum toxin production in commercially
Potassium_sorbate
Chemical compound
nitrites, such as lithium nitrite. Barium nitrite can be prepared by reacting barium nitrate with lead metal sponge, or by reaction of lead nitrite with
Barium_nitrite
Chemical compound
2 H2C2O4 → K2[OsO2(C2O4)2] + 4 H2O Potassium osmate reacts with potassium nitrite to yield potassium osmyl nitrite, and it reacts with ammonium salts
Potassium_osmate
Food preservation and flavouring processes
Nitrite (NO− 2) is generally supplied by sodium nitrite or (indirectly) by potassium nitrate. Nitrite salts are most often used to accelerate curing and
Curing_(food_preservation)
Process that partially protects steel against rust
and touch-ups. The "hot" process is an alkali salt solution using potassium nitrite or sodium nitrate and sodium hydroxide, referred to as "traditional
Bluing_(steel)
Chemical element with atomic number 19 (K)
produce soaps. Potassium-based soaps are used in soap dispensers because they more soluble in water than sodium soaps. Nitrate, nitrite, sulfate, and various
Potassium
Colorless gas with the formula NO
involves the reduction of nitrous acid in the form of sodium nitrite or potassium nitrite: 2 NaNO2 + 2 NaI + 2 H2SO4 → I2 + 2 Na2SO4 + 2 H2O + 2 •NO 2
Nitric_oxide
Chemical compound
consists of reacting sodium (or potassium) nitrite, ascorbic acid, ferrous sulfate, sodium sulfide and sodium (or potassium) hydroxide in this order. Ascorbic
Roussin's_red_salt
Broad-spectrum poisoning
between those two processes. One antidote for cyanide poisoning, nitrite (i.e., via amyl nitrite), works by converting ferrohemoglobin to ferrihemoglobin, which
Cyanide_poisoning
nitro groups per nickel atom. They can be considered the double nitrites of nickel nitrite. Hathaway, B. J.; Slade, R. C. (1966). "The properties of trirubidium
Nitronickelate
Swedish German chemist who discovered oxygen (1742–1786)
18 March 2022. Retrieved 16 April 2026. Scheele found that when potassium nitrite (KNO2) was reacted with acetic acid, nitrogen dioxide was produced
Carl_Wilhelm_Scheele
antioxidant Potassium nitrate – preservative, color fixative Potassium nitrite – preservative, color fixative Potassium phosphates – mineral salt Potassium propionate
List_of_food_additives
Naming system for food additives
dimethyl dicarbonate preservative 249 A E U potassium nitrite preservative, colour fixative 250 A E U sodium nitrite preservative, colour fixative 251 A E U
International Numbering System for Food Additives
International_Numbering_System_for_Food_Additives
Inorganic compound
Hydroxylamine can also be produced by the reduction of nitrous acid or potassium nitrite with bisulfite: HNO2 + 2 HSO−3 → N(OH)(OSO−2)2 + H2O → NH(OH)(OSO−2)
Hydroxylamine
potassium nitrite 7758–09–0 KNO3 potassium nitrate 7757–79–1 KN3 potassium azide 20762–60–1 KNbO3 potassium niobate 12030–85–2 KOH potassium hydroxide
List of CAS numbers by chemical compound
List_of_CAS_numbers_by_chemical_compound
Non-explosives producing heat, light and sound
rosin or shellac) not very efficient, does not burn well, produces potassium nitrite. At higher temperatures, with charcoal and sulfur or with magnesium
Pyrotechnic_composition
Chemical compound
historically mined in Chile) to distinguish it from ordinary saltpeter, potassium nitrate. The mineral form is also known as nitratine, nitratite or soda
Sodium_nitrate
Chemical complexes containing one or more –NO2 ligands
chemistry, transition metal complexes of nitrite describes families of coordination complexes containing one or more nitrite (−NO2) ligands. Although the synthetic
Transition metal nitrite complex
Transition_metal_nitrite_complex
Reduction of substances using carbon
Carbothermal reduction of molten potassium nitrate with charcoal to potassium nitrite
Carbothermic_reaction
Variation of solubility of assorted substances
202 246 Potassium nitrite KNO2 279 292 306 320 329 348 376 390 410 Potassium oxalate K2C2O4 25.5 31.9 36.4 39.9 43.8 53.2 63.6 69.2 75.3 Potassium perchlorate
Solubility_table
Qualitative chemical test, primarily used for detecting cholesterol
such cases a sample is treated with nitric acid and 2% solution of potassium nitrite, with positive reaction being shown by presence of red colour. Treating
Salkowski's_test
Chemical compound
trifluoride with nitryl chloride, iodic acid, periodic acid, sodium nitrite and potassium nitrite". Journal of Fluorine Chemistry. 49 (3): 301. doi:10
Thiophosphoryl_fluoride
UN 1484 5.1 Potassium bromate UN 1485 5.1 Potassium chlorate UN 1486 5.1 Potassium nitrate UN 1487 5.1 Potassium nitrate and sodium nitrite mixtures UN
List of UN numbers 1401 to 1500
List_of_UN_numbers_1401_to_1500
KNO2 potassium nitrite 7758–09–0 K2CO3 potassium carbonate 584–08–7 K2MnO4 potassium manganate 10294–64–1 K2N2O2 potassium hyponitrite KNbO3 potassium niobate
Glossary_of_chemical_formulae
Chemical compound
Potassium trispyrazolylborate, commonly abbreviated KTp, is the potassium salt with the formula :KHB(C3N2H3)3. This salt is the source of the trispyrazolylborate
Potassium_trispyrazolylborate
Class of chemical compounds
and potassium nitrate in water solution produce the salt tripotassium tetranitratomercurate(II) nitrate K3[Hg(NO2)4]NO3. On heating, nitrate nitrites lose
Nitrate_nitrite
Chemical compound
which find application in quantitative inorganic analysis of nitrates, nitrite and sulfonamide in blood, using the Griess test. This compound can be prepared
N-(1-Naphthyl)ethylenediamine
Any molecule with a cyano group (C≡N)
cyanide poisoning. Soluble cyanide salts such as sodium cyanide (NaCN), potassium cyanide (KCN) and tetraethylammonium cyanide ([(CH3CH2)4N]CN) are also
Cyanide
Chemical compound
consists of the transition metal nitrite complex [Co(NO2)6]3−. It was a reagent for the qualitative test for potassium and ammonium ions. The compound
Sodium hexanitritocobaltate(III)
Sodium_hexanitritocobaltate(III)
Chemical element with atomic number 7 (N)
decomposition (thermolysis), which can vary between the nitrite (for example, sodium), the oxide (potassium and lead), or even the metal itself (silver) depending
Nitrogen
Salt used in food preservation
Safety of Food opinion that nitrites are not required to prevent C. botulinum growth and extend shelf life. (see also Sodium Nitrite: Inhibition of microbial
Curing_salt
Italian dry-cured ham that is thinly sliced and served uncooked
the Ducal Crown symbol. Prosciutto is sometimes cured with sodium nitrite or potassium nitrate, which are generally used in other hams to produce the desired
Prosciutto
Chemical compound
mucobromic acid. In the following step, mucobromic acid is reacted with potassium nitrite at just below room temperature to form the dipotassium salt of 2,3
Hexanitroethane
Chemical decomposition caused by heat
strong heating yields dinitrogen oxide ("laughing gas") and water. Ammonium nitrite on heating yields nitrogen gas and water. Barium azide on heating yields
Thermal_decomposition
Substance added to soil to enhance plant growth
ammonia (NH3) to nitrite (NO−2), a process termed nitrification. Nitrite-oxidizing bacteria, especially Nitrobacter, oxidize nitrite (NO−2) to nitrate
Fertilizer
Fish subjected to fermentation, pickling or smoking
These food preservation processes can include adding salt, nitrates, nitrite or sugar, can involve smoking and flavoring the fish, and may include cooking
Cured_fish
Italian bacon made of pork belly meat
meat product prepared with salt with at least 100 ppm of sodium nitrite or potassium nitrate. Media related to Pancetta at Wikimedia Commons Italy portal
Pancetta
Chemical compound
ingredient in this compound is potassium peroxymonosulfate, KHSO5. The triple salt has a longer shelf-life than potassium peroxymonosulfate, but releases
Oxone
Class of enzymes
Nitrate reductases are molybdoenzymes that reduce nitrate (NO− 3) to nitrite (NO− 2). This reaction is critical for the production of protein in most
Nitrate_reductase
Chemical compound
is much interest in ammonium in soils. Ammonium is oxidized to first to nitrite and then to nitrate by nitrifying bacteria in a process known as nitrification
Ammonium
Chemical compound
additive E450. In cured meats, it speeds the conversion of sodium nitrite to nitrite (NO−2) by forming the nitrous acid (HONO) intermediate,[clarification
Disodium_pyrophosphate
Vegetable
bacterium can break down the nitrates, but an intermediate of the breakdown is nitrite, which leads to a risk of nitrosamine formation during denitrification
Beetroot
Chemical compound
4-Bromoaniline is treated with concentrated sulfuric acid and sodium nitrite, then potassium iodide. 4-Bromoaniline, Chemblink.com M. Gomberg and W. E. Bachmann
4-Bromoaniline
Type of meat
sodium nitrite is Nitrosation/nitrosylation, the formation of carcinogenic nitroso-compounds in meats containing sodium nitrite or potassium nitrate
Processed_meat
Type of sausage
diphosphate), white pepper, spices, dried sage, preservatives (sodium nitrite, potassium nitrate), and beef collagen casing dyed with red food colouring
Saveloy
Variety of boiled sausage in Russia
beef 25 kg fatty pork 60 kg lean pork 2.5 kg salt 30 g potassium nitrate or 3 g sodium nitrite 100 g sugar 30 g cardamom or nutmeg Starting in 1974, due
Doctor's_sausage
Polyatomic ion (S2O3, charge –2)
+ SO32– Sodium thiosulfate is used as a combination with amyl nitrite and sodium nitrite, along with hydroxocobalamin. It is most effective in a pre-hospital
Thiosulfate
alone. For example, the LD50 of potassium cyanide alone is 11 mg/kg, whereas it is 21 mg/kg in the presence of sodium nitrite, giving a protective index of
Protective_index
Species of flowering plant
folate tends to leach into cooking liquid. Spinach is rich in nitrates and nitrites, which may exceed safe levels if spinach is over-consumed. Spinach is eaten
Spinach
Highest-quality standard in metrology or chemistry
Sulfanilic acid for standardisation of sodium nitrite solutions potassium ferrocyanide, a reductant potassium dichromate, an oxidant Such standards are often
Primary_standard
Chemical compound
counterion for nickel(II) in electroplating. Used to separate nitrite ions from mixture of nitrite and nitrate ions (NO3− + NO2−) during qualitative analysis
Sulfamic_acid
Trivalent anion
reacting sodium oxide Na 2O and manganese dioxide MnO 2 in fused sodium nitrite NaNO 2 at 500 °C. He also crystalized the salt from strong (50%) sodium
Hypomanganate
Chemical compound
functional group is diazotized with hydrochloric acid and sodium nitrite. Potassium iodide is added to the resultant phenyldiazonium chloride, causing
Iodobenzene
Chemical compound
a chemical compound with the formula KFe4S3(NO)7. It consists of the potassium salt of the [Fe4S3(NO)7]− anion, metal nitrosyl compound. First described
Roussin's_black_salt
Measure of the amount of oxygen that can be consumed by reactions in a solution
solution of potassium dichromate is used for COD determination, although for samples with COD below 50 mg/L, a lower concentration of potassium dichromate
Chemical_oxygen_demand
Manufacturer of chemical substance
sodium cyanide, chloromethanes, sodium ferrocyanide, caustic potash, potassium carbonate, hydrochloric acid, phosphoric acid (85%) and hydrogen peroxide
Gujarat Alkalies and Chemicals Limited
Gujarat_Alkalies_and_Chemicals_Limited
Pharmaceutical drug classification
nitrite V03AB09 Dimercaprol V03AB13 Obidoxime V03AB14 Protamine V03AB15 Naloxone V03AB16 Ethanol V03AB17 Methylthioninium chloride V03AB18 Potassium permanganate
ATC_code_V03
Chemical element with atomic number 11 (Na)
in food and such food additives as monosodium glutamate (MSG), sodium nitrite, sodium saccharin, baking soda (sodium bicarbonate), and sodium benzoate
Sodium
of various chemical species, such as iron(II), manganese(II), oxalate, nitrite, and hydrogen peroxide. Depending on the conditions in which the titration
Permanganometry
Organic compounds of the form >C=N–OH
compounds. Thus alkyl nitrites react with carbon acids to give oximes: methyl ethyl ketone with ethyl nitrite, propiophenone with methyl nitrite, and phenacyl
Oxime
Chemical compound involving ionic bonding
or oxide (O2−) are classified as bases, such as sodium hydroxide and potassium oxide. Individual ions within a salt usually have multiple near neighbours
Salt_(chemistry)
Medication
patches. Nitroglycerin is a prodrug which must be denitrated, with the nitrite anion or a related species further reduced to produce the active metabolite
Nitroglycerin_(medication)
Pharmaceutical compound
cisplatin. For cyanide poisoning, it is often used after the medication sodium nitrite and is typically only recommended for severe cases. It is either given
Sodium thiosulfate (medical use)
Sodium_thiosulfate_(medical_use)
Chemical compound
Reaction of sodium trichloromethylsulfinate with sodium nitrite and sodium nitrate or potassium nitrate in sulfuric acid. Pyrolysis of trichloroacethydroxamic
Trichloronitrosomethane
Chemical compound
concentrated sulfuric acid and sodium nitrite to form the diazonium salt, which is then treated with potassium iodide to form 1-bromo-4-iodobenzene. Since
1-Bromo-4-iodobenzene
Functions of nitric oxide in organisms
in the blood. Standard pharmaceuticals such as nitroglycerine and amyl nitrite are precursors to nitric oxide. Low levels of nitric oxide production are
Biological functions of nitric oxide
Biological_functions_of_nitric_oxide
Chemical compound
currently known in only two compounds, sodium orthonitrate (Na3NO4) and potassium orthonitrate (K3NO4). The corresponding oxoacid, orthonitric acid (H3NO4)
Orthonitrate
French underground hot springs
Carbonate: 0.15 Bicarbonate: 234.48 Chloride: 2,020.00 Sulfate: 2,165.00 Nitrite: <0.01 Phosphate: <0.01 Nitrate: <0.01 Silica: 27.85 Zinc: <0.001 Strontium:
Jonzac_thermal_springs
Organic compound containing an –NO2 group
chloroacetate with sodium nitrite. (In general, alkali nitrites are unsuitable for Meyer reactions, as they give an equilibrium of mostly nitrite esters; but decarboxylation
Nitro_compound
Species of plant
When potassium nitrate is eaten by ruminants, the bacteria in the animal's stomach breaks the chemical down, producing nitrite ions. Nitrite ions then
Silybum_marianum
Test to differentiate between skin fungi
The KOH test, also known as a potassium hydroxide preparation or KOH prep, is a quick, inexpensive fungal test to differentiate dermatophytes and Candida
KOH_test
Chemical compound
treatment of 2-Nitrotoluene [88-72-2] (1) with amyl nitrite or Isopentyl formate [110-45-2] and potassium tert-butoxide resulted in an “oxidative coupling”
Iminodibenzyl
Particle, atom or molecule with a net electrical charge
a positively charged ion with fewer electrons than protons (e.g. K+ (potassium ion)) while an anion is a negatively charged ion with more electrons than
Ion
Chemical compound
2 [ON(SO3)2]2− + PbO + H2O The synthesis can be performed by combining nitrite and bisulfite to give the hydroxylaminedisulfonate. Oxidation is typically
Frémy's_salt
Systematic method of naming inorganic chemical compounds
lesser or greater quantity of oxygen, respectively. For example, NO− 2 is nitrite, while NO− 3 is nitrate. If four oxyanions are possible, the prefixes hypo-
IUPAC nomenclature of inorganic chemistry
IUPAC_nomenclature_of_inorganic_chemistry
Food preservative - (CH3(CH)4COOH)
inhibitors of Clostridium botulinum in meat products to replace the use of nitrites, which can produce carcinogenic nitrosamines. With a pKa of 4.76, sorbic
Sorbic_acid
Quantitative analysis of a water-soluble oxidizing agent
excess iodide is present and cooling the titration mixture. Strong light, nitrite and copper ions catalyse the conversion of iodide to iodine, so these should
Iodometry
prednisolone, dexamethasone) Nootropics (e.g., piracetam) Poppers/alkyl nitrites (e.g., amyl nitrite) Others (e.g., blue lotus/blue water lily, brivaracetam, flupirtine
List_of_psychoactive_drugs
Brazil's federal drug control statute
Moperone Naloxone Naltrexone Nefazodone Nialamide Isobutyl nitrite Isopentyl nitrite Isopropyl nitrite Nomifensine Nortriptyline Noxiptiline Olanzapine Opipramol
Brazilian Controlled Drugs and Substances Act
Brazilian_Controlled_Drugs_and_Substances_Act
Finely sliced and fermented cabbage
(November 2001). "Research on the dynamic variation and elimination of nitrite content in sauerkraut during pickling". Wei Sheng Yan Jiu. 30 (6): 352–4
Sauerkraut
Human and animal disease
(September 1980). "Effects of various concentrations of sodium nitrite and potassium sorbate on Clostridium botulinum toxin production in commercially
Botulism
Chemical compound
airbags. Curtius and Thiele developed another production process, where a nitrite ester is converted to sodium azide using hydrazine. This method is suited
Sodium_azide
Group of organonitrogen compounds
the nitrous acid is generated in situ (in the same flask) from sodium nitrite and the excess mineral acid (usually aqueous HCl, H2SO4, p-H3CC6H4SO3H
Diazonium_compound
KAsO2 Potassium azide – KN3 Potassium borate – K2B4O7·4H2O Potassium bromide – KBr Potassium bicarbonate – KHCO3 Potassium bifluoride – KHF2 Potassium bisulfite
List_of_inorganic_compounds
Chemical compound
Defense Technical Information Centre. Retrieved 2023-01-21. "Nitrates and Nitrites". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH.
Calcium_nitrate
Canned pork product
with salt, water, modified potato starch (as a binder), sugar, and sodium nitrite (as a preservative). Natural gelatin is formed during cooking in its cans
Spam_(food)
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