105-68-0 Usage
Description
Isoamyl propionate has an apricot-pineapple odor. The taste is
somewhat harsh when freshly distilled but subsequently yields apleasant apricot-plum bittersweet flavor. May be prepared by esterification of propionic acid with the isomeric amyl alcohols
obtained from fusel oil and other sources.
Chemical Properties
Different sources of media describe the Chemical Properties of 105-68-0 differently. You can refer to the following data:
1. Isoamyl propionate has a pineapple–apricot odor. The taste is somewhat harsh when freshly distilled, but subsequently
yields a pleasant apricot–plum, bittersweet flavor
2. Clear colorless liquid
Occurrence
Reported found in Bulgarian peppermint, cocoa, apple, melon, tomato, Camembert and Gruyere cheese, hop
oil, beer, cognac, rum, cider, red and white wine, apple wine and brandy, cherimoya and custard apple
Uses
Perfumes, lacquers, flavors.
Definition
ChEBI: A propanoate ester of isoamylol.
Preparation
By esterification of propionic acid with the isomeric amyl alcohols obtained from fusel oil and other sources.
Aroma threshold values
Detection: 8.6 to 43 ppb; aroma characteristics at 2.0%: sweet, estry, fruity apple, banana with a fresh
green, slightly tropical nuance
Taste threshold values
Taste characteristics at 30 ppm: sweet, banana, fruity, tutti-frutti, apple, melon, tropical and pineapple-like.
Hazard
Fire hazard.
Flammability and Explosibility
Flammable
Biochem/physiol Actions
Taste at 30 ppm
Metabolism
Esters such as propionates are hydrolysed to materials that are normally in the diet or are readily converted to such materials (Fassett, 1963a). The lower toxicities of the higher propionate esters (isoamyl < n-butyl < n-propyl < ethyl) and of the higher isoamyl esters (isovalerate < n-butyrate < propionate < acetate) were attributed to their slower rates of hydrolysis, which made less free alcohol available (Selisko, Ackermann & Kupke, 1962). The metabolism of propionic acid is known to proceed by conversion to succinic acid and oxidation through the citric acid cycle(Fassett, 1963b).
Check Digit Verification of cas no
The CAS Registry Mumber 105-68-0 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,0 and 5 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 105-68:
(5*1)+(4*0)+(3*5)+(2*6)+(1*8)=40
40 % 10 = 0
So 105-68-0 is a valid CAS Registry Number.
InChI:InChI=1/C8H16O2/c1-4-8(9)10-6-5-7(2)3/h7H,4-6H2,1-3H3
105-68-0Relevant articles and documents
-
McHatton,Soulal
, p. 1337 (1953)
-
Method for synthesizing propionate through ester-ester exchange path
-
Paragraph 0030-0031, (2019/04/04)
The invention provides a method for synthesizing propionate through an ester-ester exchange path and relates to a method for synthesizing the propionate. According to the method, reaction raw materials include, but are not limited to ethyl formate, propyl formate, butyl formate, ethyl acetate, propyl acetate, butyl acetate and the like; the method for synthesizing the propionate through an ester exchange one-step method is adopted. A catalyst comprises alkaline materials including ionic liquid, soluble strong base, solid base and the like respectively; the catalyst has the advantages of high catalysis efficiency and no pollution. By taking methyl propionate and ethyl acetate reaction as an example, KOH is used as the catalyst, the mol ratio of the raw materials is 1 to 1, the reaction temperature is 60 DEG C and the reaction time is 5 min; the conversion ratios of the methyl propionate and the ethyl acetate can reach 70 percent or more; products comprise ethyl propionate and the methylacetate. The whole reaction path has the characteristics of short synthetic route, simple technological flow and high yield and the catalyst is stable, does not become inactive and can be repeatedlyutilized.
PROCESS FOR PRODUCTION OF DIALKYLTIN DIALKOXIDES
-
Page/Page column 43, (2009/07/25)
An object of the present invention is to provide a process for producing a dialkyl tin compound from a composition of deactivated forms of a dialkyl tin catalyst, and to provide a process for producing the dialkyl tin catalyst from the dialkyl tin compound and using the dialkyl tin catalyst to produce a carbonic acid ester. According to the present invention, a process for producing a dialkyl tin compound is provided that subjects a composition of the deactivated forms of the dialkyl tin catalyst, formed when producing an ester compound, to an alkyl group redistribution reaction and/or dealkylation reaction.
