| Identification | More | [Name]
Isoamyl propionate | [CAS]
105-68-0 | [Synonyms]
3-METHYLBUTYL PROPIONATE
AMYL PROPIONATE
FEMA 2082
ISOAMYL PROPANOATE
ISOAMYL PROPIONATE
Isopentyl propanoate
ISOPENTYL PROPIONATE
PROPIONIC ACID ISOAMYL ESTER
1-Butanol, 3-methyl-, propanoate
1-Butanol,3-methyl-,propanoate
3-methyl-1-butanopropanoate
3-methyl-1-butylpropanoate
3-Methylbutyl propanoate
3-methylbutylpropanoate
isoamyl
iso-Amyl n-propionate
Isopentyl alcohol, propionate
isopentylalcohol,propionate
Isopentylpropanate
propanoicacid3-methylbutylester | [EINECS(EC#)]
203-322-1 | [Molecular Formula]
C8H16O2 | [MDL Number]
MFCD00048611 | [Molecular Weight]
144.21 | [MOL File]
105-68-0.mol |
| Chemical Properties | Back Directory | [Appearance]
Clear colorless liquid | [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 | [refractive index ]
n20/D 1.406(lit.)
| [Fp ]
118 °F
| [storage temp. ]
Flammables area | [solubility ]
Slightly soluble in water | [form ]
clear liquid | [color ]
Colorless to Almost colorless | [Odor]
at 100.00 %. sweet fruity banana pineapple ripe tropical fruit | [explosive limit]
1%(V) | [Odor Type]
fruity | [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]
105-68-0(EPA Substance) |
| Safety Data | Back Directory | [Risk Statements ]
R10:Flammable. | [Safety Statements ]
S16:Keep away from sources of ignition-No smoking .
S27:Take off immediately all contaminated clothing .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [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 |
| Hazard Information | Back Directory | [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]
Clear colorless liquid | [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 | [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). |
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