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Ethyl isobutyrate

HCID 7342
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Basic information

CAS
97-62-1
Standard SMILES
CCOC(=O)C(C)C
InChIKey
WDAXFOBOLVPGLV-UHFFFAOYSA-N
Molecular formula
C6H12O2
Average molar mass
116.16 g/mol
Monoisotopic mass
116.08372962

Overview

Ethyl isobutyrate appears as a colorless volatile liquid with a fruity, aromatic odor. Less dense than water and insoluble in water. Vapors heavier than air. May irritate skin and eyes. Used to make flavoring extracts and other chemicals.

Names & identifiers

Preferred name
Ethyl isobutyrate
IUPAC
ethyl 2-methylpropanoate
English name
Ethyl isobutyrate
Molecular formula
C6H12O2
Molecular weight
116.16

Names & synonyms

ETHYL ISOBUTYRATE97-62-1Ethyl 2-methylpropanoateEthyl isobutanoatePropanoic acid, 2-methyl-, ethyl esterEthyl 2,2-dimethylacetateEthyl 2-methylpropionateIsobutyric acid, ethyl esterFEMA No. 24289A9661LN4HNSC-97194DTXSID7047728
Show more names
Ethyl methylpropanoateFEMA 2428Ethyl-2-methylproanoateEthylisobutyrat
CHEBI:87303RefChem:138960DTXCID6027717202-595-4Isobutyric acid ethyl esterEthylisobutyratePropionic acid, 2-methyl-, ethyl esterEthyl iso-butyrate

Database identifiers

CAS
97-62-1
PubChem CID
7342
DTXSID
DTXSID7047728
ChEMBL
CHEMBL295870
ChEBI
CHEBI:87303
UNII
9A9661LN4H
EC Number
202-595-4
Nikkaji
J3.222K

Properties

Computed structural properties

XLogP
1.5
Topological polar surface area
26.3 Ų
Hydrogen bond donors
0
Hydrogen bond acceptors
2
Rotatable bonds
3
Heavy atoms
8
Formal charge
0
Complexity
76.6

Experimental & physicochemical properties

Chemical Classes · 2 items

Other Classes -> Esters, Other

Flammable agents - 3rd degree

LipidsFatty Acyls [FA] -> Fatty esters [FA07] -> Short fatty esters [FA0710]
SpringerMaterials PropertiesBoiling point
FragrancesFragrance Ingredient (Ethyl isobutyrate) -> IFRA transparency List
LogP1.55
Food AdditivesFLAVORING AGENT OR ADJUVANT -> FDA Substance added to food
Density0.862-0.868
Flavoring AgentsEU Flavoring substances
Solubility · 2 items

very soluble in ether

1 ml in 1 ml 95% alcohol (in ethanol)

Flash Pointless than 70 °F (NFPA, 2010)

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

GHS classification

GHS Classification · 6 items

Danger

H225 (> 99.9%): Highly Flammable liquid and vapor [Danger Flammable liquids]

P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 1699 reports by companies from 10 notifications to the ECHA C&L Inventory.

Danger

H225: Highly Flammable liquid and vapor [Danger Flammable liquids]

Hazard information

Regulatory Information · 5 items

Chemical: Propanoic acid, 2-methyl-, ethyl ester

Regulation (EC) No 1831/2003 (amended)

Status: Active Update: 29-04-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/20388

Ethyl isobutyrate: Does not have an individual approval but may be used under an appropriate group standard

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

Other Safety InformationIMAP assessments - Propanoic acid, 2-methyl-, ethyl ester: Human health tier I assessment
DOT LabelFlammable Liquid
Fire Hazards · 2 items

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:

· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Health Hazards · 2 items

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:

· May cause toxic effects if inhaled or absorbed through skin.

Chemistry & industry

Pharmacology

Cellular LocationsCytoplasm

Uses & manufacturing

Uses · 2 items

Used to make flavoring compounds and essences; [Merck Index] Used as a flavoring agent; [FDA] Used to flavor animal feeds; [ExPub: EFSA - FEEDAP]

Farming (Feed Additives) [Category: Industry]

Household ProductsInformation on 2 consumer products that contain Ethyl Isobutyrate in the following categories is provided:
Use Classification · 3 items

Fragrance Ingredients

Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes

Flavoring Agents -> JECFA Flavorings Index

General Manufacturing InformationPropanoic acid, 2-methyl-, ethyl ester: ACTIVE
Applications · 5 items

UsesUsed as food essence and flavoring, mainly used in the preparation of cream and strawberry, cherry and other fruit essences. It can also be used as raw flavoring in cigarettes, daily chemical products and other products. At the same time, it is also an excellent organic solvent.

OccurrenceReported found in apple juice, banana, chocolate, cognac, Concord grape, honey, apricot, orange, pineapple, rum, strawberry, strawberry oil, watermelon, whiskey, champagne wine, grape wine, beer, port, passion fruit wine, sherry wine, orange juice, papaya, mango, kiwi fruit, quince, spineless monkey orange (Strychnos madagasc.), spearmint oil and Parmesan cheese.

UsesIt is employed to make flavoring compounds and essences, as a flavoring agent and to flavor animal feeds.

UsesEthyl Isobutyrate is a synthetic flavoring agent that is a stable, colorless liquid of dry, fruity odor. it should be stored in tin, glass, or resin-lined containers. it is used to give fruity effects to flavors for applications in candy, baked goods, and beverages at 10–100 ppm.

Related reactions

175 records
New reaction record
HRID 47811 reaction equation
HRID 47811As reactantuspto-grants-2004_03
HRID 47997 reaction equation
HRID 47997As reactantuspto-grants-2004_03
HRID 61893 reaction equation
HRID 61893As reactantuspto-grants-2016_09
HRID 62884 reaction equation
HRID 62884As reactantuspto-grants-2016_09
HRID 90963 reaction equation
HRID 90963As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 102216 reaction equation
HRID 102216As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 108579 reaction equation
HRID 108579As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 155979 reaction equation
HRID 155979As reactantTraining data from https://doi.org/10.1039/C8SC04228D (9/10)
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Compound notes

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Boiling Point · 2 items

112.00 to 113.00 °C. @ 760.00 mm Hg

112-113 °C

Melting Point-88.2 °C

Physicochemical properties

Melting point
-88 °C · -88°C
Boiling point
112 · 112-113 °C (lit.)
Density
0.865 g/mL · 0.865 g/mL at 25 °C (lit.)
vapor density
4.01 · 4.01 (vs air)
vapor pressure
40 mm · 40 mm Hg ( 33.8 °C)
refractive index
20 · n20/D 1.387(lit.)
FEMA
2428 · 2428 | ETHYL ISOBUTYRATE
FLAVIS Number
9.413 · 09.413 | Ethyl isobutyrate
Flash point
57 °F · 57 °F
storage temp.
Flammables area
solubility
alcohol: miscible(lit.)
form
Liquid
color
Clear colorless
Odor
10 % · at 10.00 % in dipropylene glycol. sweet ethereal fruity alcoholic fusel rummy
Odor Type
fruity
biological source
synthetic
Odor Threshold
0.000022 ppm · 0.000022ppm
Water Solubility
Not miscible or difficult to mix in water. Soluble in alcohol.
Merck
14 · 14,3814
JECFA Number
186 · 186
BRN
773846 · 773846
Henry's Law Constant
1.5 · 1.5×10-2 mol/(m3Pa) at 25℃, Brockbank (2013)
Stability
Volatile
Major Application
flavors and fragrances
Cosmetics Ingredients Functions
PERFUMING
InChI
1S/C6H12O2/c1-4-8-6(7)5(2)3/h5H,4H2,1-3H3
InChIKey
WDAXFOBOLVPGLV-UHFFFAOYSA-N
SMILES
CCOC(=O)C(C)C
LogP
1.8 at · 1.8 at 22.9℃
CAS DataBase Reference
97 · 97-62-1(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS)
ETHYL ISOBUTYRATE
FDA 21 CFR
172.515 · 172.515
EWG's Food Scores
1 · 1
FDA UNII
9 A9661LN4H · 9A9661LN4H
NIST Chemistry Reference
2 · Propanoic acid, 2-methyl-, ethyl ester(97-62-1)
EPA Substance Registry System
Ethyl isobutyrate (97-62-1)
UNSPSC Code
12352100 · 12352100
NACRES
22 · NA.22
Symbol(GHS)
2 · GHS02,GHS07
Signal word
Danger
Hazard statements
315 · H315-H225
Precautionary statements
501 · P501-P240-P210-P233-P243-P241-P242-P264-P280-P370+P378-P362+P364-P303+P361+P353-P332+P313-P403+P235
PPE
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes
F,Xi
Risk Statements
11 · 11-36/37/38
Safety Statements
16 · 16-26-36-36/37/39
RIDADR
2385 · UN 2385
WGK Germany
2 · 2
RTECS
4675000 · NQ4675000
TSCA
TSCA listed
HazardClass
3 · 3
PackingGroup
II
HS Code
29156000 · 29156000
Storage Class
3 · 3 - Flammable liquids
Hazard Classifications
2 · Flam. Liq. 2
REACH Registrations
Active
Limited Quantities
1 L · 1.0 L (0.3 gallon) (liquid)
Excepted Quantities
Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)
Hazards Summary
A moderate skin irritant; Intraperitoneal LD50 (mouse) = 800 mg/kg; [RTECS] Safe when used as a flavoring agent in food; [JECFA] A skin and strong eye irritant; [Alfa Aesar MSDS]
DOT ID and Guide2385 129
Reactive GroupEsters, Sulfate Esters, Phosphate Esters, Thiophosphate Esters, and Borate Esters
Reactivity AlertsHighly Flammable
Reactivity Profile · 1 item

An ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides.

DOT Hazard Classification · 4 items

Ethyl isobutyrate

UN2385

Class 3 Flammable and combustible liquid (49 eCFR § 173.120)

PG II: the degree of danger presented by the material is medium

Air and Water ReactionsHighly flammable. Insoluble in water.

Safety & protection

Fire FightingExcerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:
Accidental Release Measures · 2 items

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

First Aid · 2 items

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:

General First Aid:

Exposure Control and Personal Protection· Wear positive pressure self-contained breathing apparatus (SCBA).
Nonfire Spill ResponseExcerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:
Isolation and Evacuation · 2 items

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:

Immediate precautionary measure

Personal Protective Equipment (PPE)Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:
Emergency Response Planning GuidelinesCAUTION: The majority of these products have a very low flash point. Use of water spray when fighting fire may be inefficient.

Safety data

PPE
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
wgk
2
tsca
TSCA listed
rtecs
NQ4675000
ridadr
UN 2385
hs_code
29156000
risk_code
11-36/37/38
Signal word
Danger
Symbol(GHS)
GHS02,GHS07
hazard_code
F,Xi
safety_code
16-26-36-36/37/39
hazard_class
3
Storage Class
3 - Flammable liquids
packing_group
II
Hazard statements
H315-H225
Limited Quantities
1.0 L (0.3 gallon) (liquid)
Excepted Quantities
Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)
REACH Registrations
Active
Hazard Classifications
Flam. Liq. 2
Precautionary statements
P501-P240-P210-P233-P243-P241-P242-P264-P280-P370+P378-P362+P364-P303+P361+P353-P332+P313-P403+P235

General DescriptionEthyl isobutyrate appears as a colorless volatile liquid with a fruity, aromatic odor. Less dense than water and insoluble in water. Vapors heavier than air. May irritate skin and eyes. Used to make flavoring extracts and other chemicals.

Preparation methods · 2 items

PreparationObtained by esterification of isobutyric acid and anhydrous ethanol. After mixing isobutyric acid and anhydrous ethanol, carefully add concentrated sulfuric acid. After refluxing the mixture for 14h, it should be washed by water and saturated sodium bicarbonate solution and dried by anhydrous magnesium sulfate and then go through distillation. Collecting fractions at 109-111℃ and obtain 2- methyl ethyl propionate. The yield is 69 percent.

PreparationBy esterification of ethanol with isobutyric acid under azeotropic conditions.

Upstream & downstream products

Upstream raw materials

Isobutyric acid

Downstream products

3-Isopropylisoxazol-5-amine2,6-Dimethyl-3,5-heptanedione1-Ethoxy-2-methylpropane3,3-Dimethyl-2-pyrrolidinone4-Amino-2,4-dihydro-5-(1-methylethyl)-3H-1,2,4-triazol-3-one4-Hexen-3-one,5-hydroxy1,3-Pentanedione, 1-cyclopropyl-4-methyl-2,2-Dimethyl-3-oxo-propionic acid ethyl esterDiethyl 2,2-diMethyl-3-oxosuccinateethyl 4-chloro-2,2-dimethylbutanoatePropanamide, N-(2-amino-2-methylpropyl)-2-methyl-Heptanoic acid, 2,2-dimethyl-, ethyl esterethyl 3-(3-methoxyphenyl)-2,2-dimethylpropanoate

Additional notes

DefinitionChEBI: Ethyl isobutyrate is a fatty acid methyl ester obtained by the formal condensation of isobutyric acid with ethanol. It has a role as a metabolite. It is functionally related to an isobutyric acid.