140-26-1 Usage
Chemical Properties
Different sources of media describe the Chemical Properties of 140-26-1 differently. You can refer to the following data:
1. CLEAR COLOURLESS LIQUID
2. FEMA 2871 has been identified as a volatile aroma component of peppermint oils. The
fruitiness of its odor is even more pronounced than that of the isobutyrate. It is
used in small quantities for the same purposes as phenylethyl isobutyrate.
3. Phenethyl isovalerate has a fruity (rose-like) odor and a bittersweet flavor, reminiscent of peach. It is not very stable.
Occurrence
Reported found in peppermint oil, spearmint oil, Scotch spearmint oil, beer, grape brandy, cognac, cider and
lamb’s lettuce.
Preparation
By esterification of phenethyl alcohol with isovaleric acid.
Taste threshold values
Taste characteristics at 2 to 10 ppm: sweet, fruity, ripe pineapple with honey, berry and peachy nuances.
Flammability and Explosibility
Nonflammable
Safety Profile
Mddly toxic by ingestion. Combustible liquid. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS
Check Digit Verification of cas no
The CAS Registry Mumber 140-26-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,4 and 0 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 140-26:
(5*1)+(4*4)+(3*0)+(2*2)+(1*6)=31
31 % 10 = 1
So 140-26-1 is a valid CAS Registry Number.
140-26-1Relevant articles and documents
Cheng,Y.S.,von Rudloff,E.
, p. 2517 - 2527 (1970)
Odor-structure relationships using fluorine as a probe
Michel, Dominique,Schlosser, Manfred
, p. 4253 - 4260 (2007/10/03)
Eight ethers, nine esters and one ketone were submitted to a systematic structural variation by replacing a hydrogen atom in the vicinity of the oxofunction by fluorine and methyl. As long as steric factors dominate, a fluorine substituent alters the olfactory properties of the parent compound much less than a methyl substituent does. However, if it occupies a position adjacent to a carbonyl group, the halogen may more profoundly affect the odor perception, presumably as a consequence of conformational changes. (C) 2000 Elsevier Science Ltd.
