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Isoamyl propionate

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Isoamyl propionate Basic information

Product Name:
Isoamyl propionate
Synonyms:
  • isoamyl
  • iso-Amyl n-propionate
  • Isopentyl alcohol, propionate
  • isopentylalcohol,propionate
  • Isopentylpropanate
  • propanoicacid3-methylbutylester
  • Propionic acid, isopentyl ester
  • propionicacid,isopentylester
CAS:
105-68-0
MF:
C8H16O2
MW:
144.21
EINECS:
203-322-1
Product Categories:
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Mol File:
105-68-0.mol
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Isoamyl propionate Chemical Properties

Melting point:
-70.1°C (estimate)
Boiling point:
156 °C (lit.)
Density 
0.871 g/mL at 25 °C (lit.)
vapor pressure 
13.331hPa at 51.27℃
FEMA 
2082 | ISOAMYL PROPIONATE
refractive index 
n20/D 1.406(lit.)
Flash point:
118 °F
storage temp. 
Store below +30°C.
solubility 
Slightly soluble in water
form 
clear liquid
color 
Colorless to Almost colorless
Odor
at 100.00 %. sweet fruity banana pineapple ripe tropical fruit
Odor Type
fruity
explosive limit
1%(V)
Water Solubility 
194.505mg/L at 25℃
JECFA Number
44
Dielectric constant
4.2(20℃)
LogP
3.365 at 25℃
CAS DataBase Reference
105-68-0(CAS DataBase Reference)
NIST Chemistry Reference
Isoamyl propionate(105-68-0)
EPA Substance Registry System
1-Butanol, 3-methyl-, propanoate (105-68-0)
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Safety Information

Risk Statements 
10
Safety Statements 
16-27-36/37/39-24-23
RIDADR 
UN 3272 3/PG 3
WGK Germany 
1
RTECS 
NT0190000
Autoignition Temperature
370 °C
HazardClass 
3.2
PackingGroup 
III
HS Code 
29155000
Toxicity
LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rabbit > 5000 mg/kg

MSDS

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Isoamyl propionate Usage And Synthesis

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

Isoamyl propionate has a pineapple–apricot odor. The taste is somewhat harsh when freshly distilled, but subsequently yields a pleasant apricot–plum, bittersweet flavor

Chemical Properties

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).

Isoamyl propionate Preparation Products And Raw materials

Raw materials

Isoamyl propionateSupplier

Meryer (Shanghai) Chemical Technology Co., Ltd.
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4006608290; 18621169109
Email
market03@meryer.com
TCI (Shanghai) Development Co., Ltd.
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021-67121386
Email
Sales-CN@TCIchemicals.com
Energy Chemical
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021-021-58432009 400-005-6266
Email
sales8178@energy-chemical.com
jiliang chemicals
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21-62165282 15801962796;
Email
bidingchem@163.com
Shandong Xiya Chemical Co., Ltd
Tel
4009903999 13355009207
Email
3007715519@qq.com