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Potassium azide information


Potassium azide
Names
IUPAC name
Potassium azide
Identifiers
CAS Number
  • 20762-60-1 checkY
3D model (JSmol)
  • Interactive image
ECHA InfoCard 100.039.997 Edit this at Wikidata
PubChem CID
  • 10290740
UNII
  • J3LSB2C8SO checkY
CompTox Dashboard (EPA)
  • DTXSID9040267 Edit this at Wikidata
InChI
  • InChI=1S/K.N3/c;1-3-2/q+1;-1
    Key: TZLVRPLSVNESQC-UHFFFAOYSA-N
SMILES
  • [N-]=[N+]=[N-].[K+]
Properties
Chemical formula
KN3
Molar mass 81.1184 g/mol
Appearance Colorless crystals[1]
Density 2.038 g/cm3
[1]
Melting point 350 °C (662 °F; 623 K) (in vacuum)[1]
Boiling point decomposes
Solubility in water
41.4 g/100 mL (0 °C)
50.8 g/100 mL (20 °C)
105.7 g/100 mL (100 °C)
Solubility 0.1375 g/100 g in ethanol (16°C)[2]
insoluble in ether
Thermochemistry
Std enthalpy of
formation fH298)
-1.7 kJ/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Very Toxic, explosive if strongly heated
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineInstability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxideSpecial hazards (white): no code
4
3
3
Lethal dose or concentration (LD, LC):
LD50 (median dose)
27 mg/kg (oral, rat)[3]
Related compounds
Other cations
Sodium azide, copper(II) azide, lead(II) azide, silver azide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)
Infobox references

Potassium azide is the inorganic compound having the formula KN3. It is a white, water-soluble salt. It is used as a reagent in the laboratory.

It has been found to act as a nitrification inhibitor in soil.[4]

  1. ^ a b c Dale L. Perry; Sidney L. Phillips (1995). Handbook of inorganic compounds. CRC Press. p. 301. ISBN 0-8493-8671-3.
  2. ^ Jiri Hála (2004). "IUPAC-NIST Solubility Data Series. 79. Alkali and Alkaline Earth Metal Pseudohalides". J. Phys. Chem. Ref. Data. 33: 16. doi:10.1063/1.1563591.
  3. ^ "Substance Name: Potassium azide". chem.sis.nlm.nih.gov. Archived from the original on 2014-08-12. Retrieved 2014-08-11.
  4. ^ T. D. Hughes; L. F. Welch (1970). "Potassium Azide as a Nitrification Inhibitor". Agronomy Journal. 62 (5). American Society of Agronomy: 595–599. doi:10.2134/agronj1970.00021962006200050013x.

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Potassium azide

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Potassium azide is the inorganic compound having the formula KN3. It is a white, water-soluble salt. It is used as a reagent in the laboratory. It has...

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Sodium azide

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ingredients, such as potassium nitrate and silica. In the latter case, innocuous sodium silicates are generated. While sodium azide is still used in evacuation...

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Potassium cyanate

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121 pm, about 5 pm longer than for cyanide. Potassium cyanate is isostructural with potassium azide. The potassium and sodium salts can be used interchangeably...

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Hydrazoic acid

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Hydrazoic acid, also known as hydrogen azide, azic acid or azoimide, is a compound with the chemical formula HN3. It is a colorless, volatile, and explosive...

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Rubidium azide

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H2O This formula is typically used to synthesize potassium azide from caustic potash. Rubidium azide has been investigated for possible use in alkali...

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Ammonium azide

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Ammonium azide is the chemical compound with the formula [NH4]N3, being the salt of ammonia and hydrazoic acid. Like other inorganic azides, this colourless...

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List of inorganic compounds

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KAsO2 Potassium azide – KN3 Potassium borate – K2B4O7·4H2O Potassium bromide – KBr Potassium bicarbonate – KHCO3 Potassium bifluoride – KHF2 Potassium bisulfite...

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picolinafen [Wikidata] pinoxaden [Wikidata] piperophos [Wikidata] potassium arsenite potassium azide potassium cyanate pretilachlor [Wikidata] primisulfuron [Wikidata]...

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Solubility table

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378×10−14 Potassium acetate KC2H3O2 216 233 256 283 324 350 381 398 Potassium arsenate K3AsO4 19 Potassium azide KN3 41.4 46.2 50.8 55.8 61 106 Potassium benzoate...

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Pyrotechnic initiator

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they also share similarities. Common oxidizers used are potassium perchlorate and potassium nitrate. Common fuels used are titanium, titanium(II) hydride...

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Barium azide

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submerged in ethanol.[citation needed] Barium azide can be used to make azides of magnesium, sodium, potassium, lithium, rubidium and zinc with their respective...

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polycarbamate polyoxins polyoxorim posaconazole potassium azide potassium polysulfide [Wikidata] potassium thiocyanate pramiconazole probenazole [Wikidata]...

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Nitrogen

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names of many nitrogen compounds, such as hydrazine and compounds of the azide ion. Finally, it led to the name "pnictogens" for the group headed by nitrogen...

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Fluorine azide

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Fluorine azide or triazadienyl fluoride is a yellow green gas composed of nitrogen and fluorine with formula FN3. Its properties resemble those of ClN3...

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List of CAS numbers by chemical compound

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KNO3 potassium nitrate 7757–79–1 KN3 potassium azide 20762–60–1 KNbO3 potassium niobate 12030–85–2 KOH potassium hydroxide 1310–58–3 KO2 potassium superoxide...

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Sodium

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sodium is used mainly for the production of sodium borohydride, sodium azide, indigo, and triphenylphosphine. A once-common use was the making of tetraethyllead...

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Nitrogen compounds

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However, the alkali metal azides NaN3 and KN3, featuring the linear N− 3 anion, are well-known, as are Sr(N3)2 and Ba(N3)2. Azides of the B-subgroup metals...

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Thermal decomposition

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heating yields nitrogen gas and water. Barium azide on heating yields barium metal and nitrogen gas. Sodium azide on heating at 300 °C (573 K; 572 °F) violently...

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Gas generator

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US might contain 130 grams of sodium azide. Similar gas generators are used for fire suppression. Sodium azide decomposes exothermically to sodium and...

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Detonator

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explosive, often mixed with potassium chlorate to yield better performance. This compound was superseded by others: lead azide, lead styphnate, some aluminium...

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Silver fulminate

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10–20% potassium chlorate is cheaper and more brisant than the fulminate alone. Silver fulminate is often confused with silver nitride, silver azide, or...

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Explosive

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dinitride Ethyl azide Explosive antimony Fluorine perchlorate Fulminic acid Halogen azides: Fluorine azide Chlorine azide Bromine azide Iodine azide Hexamethylene...

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Alkali metal

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decomposition of sodium azide. Potassium occurs in many minerals, such as sylvite (potassium chloride). Previously, potassium was generally made from...

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Explosophore

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The azo and azide groups respectively, connected to organic/inorganic compounds (e.g. silver azide AgN3, lead azide Pb(N3)2, ammonium azide NH4N3) III...

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Oseltamivir total synthesis

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method includes two reaction steps with potentially hazardous azides. A reported azide-free Roche synthesis of tamiflu is summarised graphically below:...

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Chemical decomposition

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of products. One of these is the explosive breakdown reaction of sodium azide [(NaN3)2] into nitrogen gas (N2) and sodium (Na). It is this process which...

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Elimination reaction

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E2, while weaker bases that are still good nucleophiles (e.g., acetate, azide, cyanide, iodide) will give primarily SN2. Finally, weakly nucleophilic...

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