Undecanoic acid

from Wikipedia, the free encyclopedia
Structural formula
Structural formula of undecanoic acid
General
Surname Undecanoic acid
other names
  • n -undecanoic acid
  • Undecylic acid
Molecular formula C 11 H 22 O 2
Brief description

crystalline solid

External identifiers / databases
CAS number 112-37-8
EC number 203-964-2
ECHA InfoCard 100.003.604
PubChem 8180
Wikidata Q425988
properties
Molar mass 186.30 g mol −1
Physical state

firmly

density

0.89 g cm −3

Melting point

28.5-29.3 ° C

boiling point
  • 280 ° C
  • 164 ° C (2.0 kPa)
solubility

almost insoluble in water, soluble in organic solvents

Refractive index

1.4294 (45 ° C)

safety instructions
GHS labeling of hazardous substances
07 - Warning

Caution

H and P phrases H: 315-319-335
P: 261-305 + 351 + 338
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Undecanoic acid is a carboxylic acid from the homologous series of saturated fatty acids . At room temperature, it is a white solid that melts from 29 ° C. Their salts and esters are called undecanoates .

Occurrence and representation

Undecanoic acid is found in some essential oils , such as iris and mullet oil . The acid can be synthesized by hydrogenation of undecylenic acid , which is accessible by pyrolysis of ricinoleic acid .

use

The methyl and ethyl esters are used in perfumery.

Individual evidence

  1. a b c d e f Entry on undecanoic acid. In: Römpp Online . Georg Thieme Verlag, accessed on June 7, 2013.
  2. Data sheet undecanoic acid at AlfaAesar, accessed on January 6, 2008 ( PDF )(JavaScript required) .
  3. David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 96th edition. (Internet version :), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-544.
  4. HM Rauen: Biochemical Pocket Book. 2nd edition, Springer, 1964, ISBN 978-3-642-85768-3 , (Reprint), p. 221.
  5. David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-516.
  6. a b Data sheet Undecanoic acid from Sigma-Aldrich , accessed on April 25, 2011 ( PDF ).