Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 12613Generated: October 23, 2026

Isoamyl isovalerate

ISOAMYL ISOVALERATE · AMYL VALERATE · ISOPENTYL ISOVALERATE · FEMA 2085 · Appleoil · ISOPENTYL ISOPENTANOATE · 3-METHYLBUTYL ISOVALERATE · Isopentyl 3-methylbutanoate

https://huagongshe.com/en/chemical/12613

Isoamyl isovalerate molecular structure

Identifiers & Physical Properties

CAS No.659-70-1
Molecular formulaC10H20O2
Average molar mass172.26 g/mol
Monoisotopic mass172.14632988 g/mol
SMILESCC(C)CCOC(=O)CC(C)C
InChIKeyXINCECQTMHSORG-UHFFFAOYSA-N
PubChem CID12613
ChEMBLCHEMBL3189076
ChEBICHEBI:31727
EC No.211-536-1
DTXSIDDTXSID8044757

Chemical & Physical Properties

XLogP3.1
Topological polar surface area26.3
Hydrogen bond donors0
Hydrogen bond acceptors2
Rotatable bonds6
Heavy atoms12
Formal charge0
Complexity128
LipidsFatty Acyls [FA] -> Fatty esters [FA07] -> Wax monoesters [FA0701]
SpringerMaterials PropertiesBoiling point
FragrancesFragrance Ingredient (Isoamyl isovalerate) -> IFRA transparency List
Food additivesFLAVORING AGENT OR ADJUVANT -> FDA Substance added to food
Density0.851 - 0.8570.854 g/mL at 25 °C (lit.)
Flavoring agentsEU Flavoring substances
SolubilitySoluble in most fixed oils, slightly soluble in propylene glycol, insoluble in water1ml in 6ml 70% ethanol (in ethanol)0.016g/l48.1mg/L at 20℃
Boiling point190.00 to 191.00 °C. @ 760.00 mm Hg192 °C192-193 °C (lit.)
Refractive index1.411 - 1.414n20/D 1.412(lit.)
Physical DescriptionLiquidColourless liquid with a fruity apple-like odour
Melting point-58.15°C
Vapor pressure0.8 hPa (20 °C)
FEMA2085 | ISOAMYL ISOVALERATE
FLAVIS Number09.463 | 3-Methylbutyl 3-methylbutyrate
Flash point152 °F
Storage conditionsSealed in dry,Room Temperature
Physical stateclear liquid
ColorColorless to Almost colorless
Odorat 100.00 %. sweet fruity green ripe apple jammy tropical
Odor typefruity
Biological sourcesynthetic
Merck14,5121
JECFA Number50
Henry's law constant4.0×10-3 mol/(m3Pa) at 25℃, Yaws (1999)
Major applicationsflavors and fragrances
Cosmetics Ingredients FunctionsPERFUMING
InChI1S/C10H20O2/c1-8(2)5-6-12-10(11)7-9(3)4/h8-9H,5-7H2,1-4H3
InChIKeyXINCECQTMHSORG-UHFFFAOYSA-N
SMILESCC(C)CCOC(=O)CC(C)C
LogP (partition coefficient)3.8 at 35℃
CAS DataBase Reference659-70-1(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS)ISOAMYL ISOVALERATE
FDA 21 CFR172.515
EWG's Food Scores1
FDA UNII16M1VA1FJY
NIST Chemistry ReferenceButanoic acid, 3-methyl-, 3-methylbutyl ester(659-70-1)
EPA Substance Registry System3-Methylbutyl isovalerate (659-70-1)
UNSPSC Code12352108
NACRESNA.22
GHS pictogramGHS09
Signal wordWarning
GHS hazard statementsH411
GHS precautionary statementsP273-P391-P501
Personal protective equipment (PPE)Eyeshields, Gloves, type ABEK (EN14387) respirator filter
Hazard symbolsXi
Risk statements (R)36/37/38
Safety statements (S)26-36/37/39
Water hazard class (WGK)2
RTECS numberNY1508000
TSCA inventory statusTSCA listed
Customs code2915 60 90
Storage class10 - Combustible liquids
Hazard classAquatic Chronic 2
ToxicityLD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rabbit > 5000 mg/kg
REACH registrationsActive

Safety & Regulations

GHS classificationThis chemical does not meet GHS hazard criteria for 0.7% (12 of 1739) of reports.H411 (97.1%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]P273, P391, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 1739 reports by companies from 6 notifications to the ECHA C&L Inventory.
Regulatory informationChemical: Butanoic acid, 3-methyl-, 3-methylbutyl esterRegulation (EC) No 1831/2003 (amended)REACH registered substance: 3-methylbutyl isovalerate (EC: 211-536-1)Butanoic acid, 3-methyl-, 3-methylbutyl ester: Does not have an individual approval but may be used under an appropriate group standard
Other safety informationIMAP assessments - Butanoic acid, 3-methyl-, 3-methylbutyl ester: Human health tier I assessment
Hazard Classes and CategoriesAquatic Chronic 2 (97.1%)
Personal protective equipment (PPE)Eyeshields, Gloves, type ABEK (EN14387) respirator filter
Water hazard class (WGK)2
TSCA inventory statusTSCA listed
RTECS numberNY1508000
Customs code2915 60 90
ToxicityLD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rabbit > 5000 mg/kg
Risk statements (R)36/37/38
Signal wordWarning
GHS pictogramGHS09
Hazard symbolsXi
Safety statements (S)26-36/37/39
Storage class10 - Combustible liquids
GHS hazard statementsH411
REACH registrationsActive
Hazard classAquatic Chronic 2
GHS precautionary statementsP273-P391-P501

Applications & Uses

Description

Isoamyl isovalerate has a characteristic fruity odor and a sweet apple-like flavor. May be prepared by passing vapors of isoamyl alcohol and isovaleric aldehyde over a copper uranium based catalyst at 240 - 280°C in the presence of hydrogen.

Occurrence

Reported found in the ether oil from leaves of Eucalyptus microcorys, angelica root oil and mastic gum leaf and fruit oils. Also reported in wine, oil of hop, olive oil, banana, tomato, peppermint and spearmint oil, beer, rum, whiskies, cider, sherry, plum, quince, cherimoya and lamb’s lettuce.

Uses

Isopentyl 3-Methylbutanoate is used in method for preparing essence compound of olfactory recognition book suitable for olfactory sense of Chines.

Uses

As apple essence for flavoring liqueurs and candy.

General Description

Isoamyl isovalerate is an apple flavor volatile compound mainly found in apple and banana. It is used as a flavoring agent in chewing gums, candies and baked goods.

Preparation & Synthesis

Preparation

By passing vapors of isoamyl alcohol and isovaleric aldehyde over a copper–uranium-based catalyst at 240 to 280°C in the presence of hydrogen