Bitter almond oil

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Apricot kernels
safety instructions
Surname

Bitter almond oil

CAS number

90320-35-7

GHS labeling of hazardous substances
07 - Warning

Caution

H and P phrases H: 302
P: ?

Bitter almond oil is a poisonous, initially colorless, later slightly yellowish, essential oil from the stone kernels, seeds of various Prunus species. It is mostly obtained from the seeds, kernels of bitter almonds , peaches , apricots , cherries and plums .

The ground seeds are first freed from fatty oil by pressing and then the bitter almond oil is distilled off with steam from the press cake macerated with water.

The main component of the unrefined oil is benzaldehyde ( approx. 95%) ; it also contains 2 to 4% hydrocyanic acid and mandelic acid nitrile , benzoin and aldehyde resin . If you mix the distillate with alcohol produced bitter almond water ; Mandelonitrile dissolved in water and wine spirit → essential water .

Hydrocyanic acid-free bitter almond oil is produced by shaking it out with milk of lime and iron sulfate , which forms calcium iron (II) cyanide . This is followed by another steam distillation .

This bitter almond oil, which is free of hydric acid, consists of over 99% benzaldehyde and only contains traces of other components; therefore, pure benzaldehyde is also known as “artificial bitter almond oil” (Oleum Amygdalarum aethereum artificiale).

It is used as a spice oil in confectionery and bakery, in liqueur production , and also in general for food additives and perfumes .

See also

Individual evidence

  1. ↑ Template: CL Inventory / not harmonized There is not yet a harmonized classification for this substance . A label of Almond, bitter, ext, derived from a self-classification by the distributor is shown . in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on March 31, 2017.
  2. ^ Gerhard Eisenbrand, Peter Schreier: RÖMPP Lexikon Lebensmittelchemie. 2nd edition, Thieme, 2006, ISBN 978-3-13-736602-7 .
  3. ↑ What percentage of hydrocyanic acid does natural bitter almond oil contain? In: Wissenschaft-online.de. Retrieved April 9, 2013 .
  4. ^ Hermann Thoms : Fundamentals of pharmaceutical and medicinal chemistry. 9th edition, Springer, 1931, ISBN 978-3-642-90468-4 , p. 415.