Octanal

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Structural formula
Structural formula of octanal
General
Surname Octanal
other names
  • Caprylaldehyde
  • Octylaldehyde
  • Octanal
Molecular formula C 8 H 16 O
Brief description

colorless liquid

External identifiers / databases
CAS number 124-13-0
EC number 204-683-8
ECHA InfoCard 100.004.259
PubChem 454
Wikidata Q416673
properties
Molar mass 128.21 g mol −1
Physical state

liquid

density

0.82 g cm −3

Melting point

12-15 ° C

boiling point

171 ° C

Vapor pressure
  • 2.36 h Pa (20 ° C)
  • 4.25 hPa (30 ° C)
  • 7.38 hPa (40 ° C)
  • 12.4 hPa (50 ° C)
solubility

0.21 g l −1 (20 ° C)

Refractive index

1.4217 (20 ° C)

safety instructions
GHS labeling of hazardous substances
02 - Highly / extremely flammable 07 - Warning 09 - Dangerous for the environment

Caution

H and P phrases H: 226-315-319-411
P: 210-280-302 + 352-305 + 351 + 338-362
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

Octanal is a fruity smelling, colorless or yellowish liquid from the class of aldehydes . The common name is caprylaldehyde.

presentation

Octanal can be synthesized by hydroformylation of 1-heptene or by oxidation of 1-octanol .

properties

Octanal is a colorless liquid that boils at 171 ° C at normal pressure . The heat of vaporization is 43.4 kJ mol −1 .

Safety-related parameters

Octanal forms flammable vapor-air mixtures above the flash point. The compound has a flash point of 56 ° C. The explosion range is between 1% by volume as the lower explosion limit (LEL) and 6.5% by volume as the upper explosion limit (UEL). The ignition temperature is 200 ° C. The substance therefore falls into temperature class T4.

use

Octanal is contained in paints and varnishes. It is the starting material for synthetic fragrances such as rose oil or lemon oil .

safety instructions

Inhalation, ingestion or absorption through the skin can be harmful to health. Irritating to eyes, respiratory system and skin.

Individual evidence

  1. ↑ a b c d e f g h i j k l m n Entry on caprylaldehyde in the GESTIS substance database of the IFA , accessed on January 10, 2017(JavaScript required) .
  2. ↑ 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. 3-402.
  3. ↑ Stephenson, RM; Malanowski, S .: Handbook of the Thermodynamics of Organic Compounds 1987, doi : 10.1007 / 978-94-009-3173-2 .