Dodecylbenzene

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Dodecylbenzene
Dodecylbenzene.png
Names
IUPAC name
Dodecylbenzene
Other names
1-Phenyldodecane, Phenyldodecane, n-Dodecylbenzene, Laurylbenzene
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.004.175
Properties
C18H30
Molar mass 246.43 g/mol
Appearance colourless liquid
Density 0.856 g/cm3
Melting point −7 °C (19 °F; 266 K)
Boiling point 290 to 410 °C (554 to 770 °F; 563 to 683 K) (mixture of isomers)
insoluble
Hazards
NFPA 704
Flammability code 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g., canola oil Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point 135 °C (275 °F; 408 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Dodecylbenzene is an organic compound with the formula C12H25C6H5.Dodecylbenzene is a colorless liquid with a weak oily odor. Floats on water.

This colourless waxy solid consists of a dodecyl group (C12H25) attached to a phenyl group (C6H5). Dodecylbenzene is a precursor to sodium dodecylbenzenesulfonate, a surfactant that is a key ingredient of household laundry detergents, such as detergent powder.[1]

Production[edit]

This compound and some related ones with the formulae C10+nH21+2nC6H5 (n = 0-6) are produced industrially by treating the corresponding alkenes C10+nH20+2n with an excess of benzene in the presence of hydrogen fluoride or related acid catalysts. The resulting alkylbenzene compounds are sulfonated to give the corresponding sulfonic acids, this sulfonation can be highly specific to place the sulfonic acid group across the ring, in the 4-position. The resulting sulfonic acid is then neutralized with base to give sodium dodecylbenzenesulfonate, which is subsequently blended with other components to give various cleaning products.[1]

References[edit]

  1. ^ a b Kurt Kosswig,"Surfactants" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, 2005, Weinheim. doi:10.1002/14356007.a25_747

External links[edit]