Difference between revisions of "Potassium nitrate"

Latest revision as of 11:22, 25 August 2022

Nitre

Description

Powdered possium nitrate

Clear colorless crystals that are slightly Hygroscopic. Potassium nitrate has been used since the 1300s as an ingredient in Gunpowder. It was used in Gold smelting, Glass making, and Textile dyeing. In a closed environment, a saturated salt solution of potassium nitrate will form an equilibrium at a relative humidity of about 93% (20C).

Synonyms and Related Terms

niter; nitre; saltpeter; Bengal saltpeter ; sal prunella; kaliumnitrat (Dan., Deut.); salpêtre (Fr.); nitrato di potassio (It.); kaliumnitraat (Ned.); azotan potasu (Pol.); saletra potasowa (Pol.);

Raman

Chemical structure

Risks

Dangerous fire and explosion risk when shocked, heated or in contact with organic materials.
Strong oxidizing agent.
ThermoFisher: SDS

Physical and Chemical Properties

Soluble in water, glycerol. Slightly soluble in ethanol.

Deliquescent point at 20C is 93.2 % RH (see Saturated salt solutions)

Composition	KNO3
CAS	7757-79-1
Melting Point	333 C
Density	2.1062 g/ml
Molecular Weight	mol. wt. = 101.1
Boiling Point	400 C (dec)

Resources and Citations

G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 632

Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986

Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985

Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979

Wikipedia: http://en.wikipedia.org/wiki/Potassium_nitrate (Accessed Nov. 9, 2005)

@@ Line 1: / Line 1: @@
 [[File:pn31241nitre.jpg|thumb|Nitre]]
 == Description ==
+[[File:Potassium_nitratekes.jpg|thumb|Powdered possium nitrate]]
+Clear colorless crystals that are slightly [[hygroscopic|hygroscopic]]. Potassium nitrate has been used since the 1300s as an ingredient in [[gunpowder|gunpowder]]. It was used in [[gold|gold]] smelting, [[glass|glass]] making, and [[textile|textile]] dyeing. In a closed environment, a [[saturated%20salt%20solutions|saturated salt solution]] of potassium nitrate will form an equilibrium at a relative humidity of about 93% (20C).
-Clear colorless crystals that are slightly [http://cameo.mfa.org/materials/fullrecord.asp?name=hygroscopic hygroscopic]. Potassium nitrate has been used since the 1300s as an ingredient in [http://cameo.mfa.org/materials/fullrecord.asp?name=gunpowder gunpowder]. It was used in [http://cameo.mfa.org/materials/fullrecord.asp?name=gold gold] smelting, [http://cameo.mfa.org/materials/fullrecord.asp?name=glass glass] making, and [http://cameo.mfa.org/materials/fullrecord.asp?name=textile textile] dyeing. In a closed environment, a [http://cameo.mfa.org/materials/fullrecord.asp?name=saturated salt solutions saturated salt solution] of potassium nitrate will form an equilibrium at a relative humidity of about 93% (20C).
-[[File:Potassium_nitratekes.jpg|thumb|Powdered possium nitrate]]
 == Synonyms and Related Terms ==
-niter; nitre; saltpeter; Bengal saltpeter ; sal prunella; kaliumnitrat (Dan., Deut.); salptre (Fr.); nitrato di potassio (It.); kaliumnitraat (Ned.); azotan potasu (Pol.); saletra potasowa (Pol.);
+niter; nitre; saltpeter; Bengal saltpeter ; sal prunella; kaliumnitrat (Dan., Deut.); salpêtre (Fr.); nitrato di potassio (It.); kaliumnitraat (Ned.); azotan potasu (Pol.); saletra potasowa (Pol.);
 [[[SliderGallery rightalign|nitreRS.jpg~Raman|potassium nitrate.jpg~Chemical structure]]]
+== Risks ==
-== Other Properties ==
+* Dangerous fire and explosion risk when shocked, heated or in contact with organic materials.
+* Strong oxidizing agent.
+* ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AC424155000&productDescription=POTASSIUM+NITRATE+REAGENT+500G&vendorId=VN00032119&countryCode=US&language=en SDS]
+== Physical and Chemical Properties ==
 Soluble in water, glycerol. Slightly soluble in ethanol.
-Deliquescent point at 20C is 93.2 % RH (see [http://cameo.mfa.org/materials/fullrecord.asp?name=saturated salt solutions saturated salt solutions])
+Deliquescent point at 20C is 93.2 % RH (see [[saturated%20salt%20solutions|saturated salt solutions]])
 {| class="wikitable"
@@ Line 26: / Line 29: @@
 |-
 ! scope="row"| Melting Point
-| 333
+| 333 C
 |-
 ! scope="row"| Density
-| 2.1062
+| 2.1062 g/ml
 |-
 ! scope="row"| Molecular Weight
@@ Line 35: / Line 38: @@
 |-
 ! scope="row"| Boiling Point
-| 400 (dec)
+| 400 C (dec)
 |}
-== Hazards and Safety ==
+== Resources and Citations ==
-Dangerous fire and explosion risk when shocked, heated or in contact with organic materials. Strong oxidizing agent.
-[http://www.cdc.gov/niosh/ipcsneng/neng0184.html International Chemical Safety Card]
-== Authority ==
-* G.S.Brady, G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 632
+* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 632
-* Hermann Kuhn, Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986
+* Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986
-* Susan E. Schur, Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, ''Technology and Conservation'', Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
+* Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, ''Technology and Conservation'', Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
-* Michael McCann, Michael McCann, ''Artist Beware'', Watson-Guptill Publications, New York City, 1979
+* Michael McCann, ''Artist Beware'', Watson-Guptill Publications, New York City, 1979
-* Wikipedia, the free encyclopedia, at http://www.wikipedia.com  Comment: http://en.wikipedia.org/wiki/Potassium_nitrate (Accessed Nov. 9, 2005)
+* Wikipedia: http://en.wikipedia.org/wiki/Potassium_nitrate (Accessed Nov. 9, 2005)
 [[Category:Materials database]]