Difference between revisions of "Linoleic acid"

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== Description ==
 
== Description ==
  
An unsaturated fatty acid (C18) that is a component of many vegetable oils such as [http://cameo.mfa.org/materials/fullrecord.asp?name=linseed oil linseed], [http://cameo.mfa.org/materials/fullrecord.asp?name=soybean oil soybean], [http://cameo.mfa.org/materials/fullrecord.asp?name=corn oil corn], [http://cameo.mfa.org/materials/fullrecord.asp?name=sunflower oil sunflower], [http://cameo.mfa.org/materials/fullrecord.asp?name=safflower oil safflower], [http://cameo.mfa.org/materials/fullrecord.asp?name=poppy seed oil poppy seed], and [http://cameo.mfa.org/materials/fullrecord.asp?name=perilla oil perilla]. Linoleic acid is one component that makes an oil a '[http://cameo.mfa.org/materials/fullrecord.asp?name=drying oil drying oil]'. The two double bonds in linoleic acid readily oxidize in air to produce a hardened, insoluble film. Pure linoleic acid added to paints, coatings, lacquers, and vitamins (as a food supplement).
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An unsaturated fatty acid (C18) that is a component of many vegetable oils such as [[linseed oil|linseed]], [[soybean oil|soybean]], [[corn oil|corn]], [[sunflower oil|sunflower]], [[safflower oil|safflower]], [[poppy seed oil|poppy seed]], and [[perilla oil|perilla]]. Linoleic acid is one component that makes an oil a '[[drying oil]]'. The two double bonds in linoleic acid readily oxidize in air to produce a hardened, insoluble film. Pure linoleic acid added to paints, coatings, lacquers, and vitamins (as a food supplement).
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
  
cis-9, cis12-octadienoic acid; cido linoleico (Esp.); acide linolque (Fr.); acido linoleico (It); linolic acid
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cis-9, cis12-octadienoic acid; ácido linoleico (Esp.); acide linoléïque (Fr.); acido linoleico (It); linolic acid
  
[[[SliderGallery rightalign|linoleic acid.jpg~Chemical structure]]]
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== Risks ==
  
== Other Properties ==
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* Combustible.
 +
* Reacts with oxygen to solidify.
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* Fisher Scientific: [https://fscimage.fishersci.com/msds/97109.htm MSDS]
 +
 
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==Physical and Chemical Properties==
  
 
Soluble in ethanol or ether. Insoluble in water.
 
Soluble in ethanol or ether. Insoluble in water.
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|-
 
|-
 
! scope="row"| Melting Point
 
! scope="row"| Melting Point
| -5
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| -5 C
 
|-
 
|-
 
! scope="row"| Density
 
! scope="row"| Density
| 0.905
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| 0.905 g/ml
 
|-
 
|-
 
! scope="row"| Molecular Weight
 
! scope="row"| Molecular Weight
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|-
 
|-
 
! scope="row"| Boiling Point
 
! scope="row"| Boiling Point
| 228
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| 228 C
 
|}
 
|}
  
== Hazards and Safety ==
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==Resources and Citations==
 
 
Combustible. Reacts with oxygen to solidify.
 
 
 
Fisher Scientific: [https://fscimage.fishersci.com/msds/97109.htm MSDS]
 
 
 
== Authority ==
 
  
* G.S.Brady, G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 313
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 313
  
* Richard S. Lewis, Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
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* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
  
* Random House, Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997
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* Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997
  
 
* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983  Comment: entry 5529
 
* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983  Comment: entry 5529

Latest revision as of 13:18, 8 September 2022

Description

An unsaturated fatty acid (C18) that is a component of many vegetable oils such as linseed, soybean, corn, sunflower, safflower, poppy seed, and perilla. Linoleic acid is one component that makes an oil a 'Drying oil'. The two double bonds in linoleic acid readily oxidize in air to produce a hardened, insoluble film. Pure linoleic acid added to paints, coatings, lacquers, and vitamins (as a food supplement).

Synonyms and Related Terms

cis-9, cis12-octadienoic acid; ácido linoleico (Esp.); acide linoléïque (Fr.); acido linoleico (It); linolic acid

Risks

  • Combustible.
  • Reacts with oxygen to solidify.
  • Fisher Scientific: MSDS

Physical and Chemical Properties

Soluble in ethanol or ether. Insoluble in water.

Composition C17H31COOH
CAS 60-33-3
Melting Point -5 C
Density 0.905 g/ml
Molecular Weight mol. wt. = 280.44
Boiling Point 228 C

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 313
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 5529
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998