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General Material Information

Preferred name methyl (E)-2-butenoate
Trivial Name Methyl E-crotonate
Short Description trans-methyl crotonate
Formula C5 H8 O2
CAS Number 623-43-8
Flavis Number 9.636
ECHA Number 210-793-7
FDA UNII 3T02JIH93S
Nikkaji Number J43.555D
Beilstein Number 1720292
MDL MFCD00009287
xLogP3-AA 0.90 (est)
NMR Predictor External link
Synonyms
  • trans- but-2-enoic acid methyl ester
  • (2E)-2-butenoic acid methyl ester
  • (E)-2-butenoic acid methyl ester
  • trans-2-butenoic acid methyl ester
  • 2-butenoic acid, methyl ester, (2E)-
  • 2-butenoic acid, methyl ester, (E)-
  • (E)- crotonic acid methyl ester
  • crotonic acid, methyl ester, (E)-
  • methyl (2E)-2-butenoate
  • methyl (2E)-but-2-enoate
  • methyl (E)-but-2-enoate
  • trans- methyl crotonate
  • methyl E-crotonate
  • methyl trans-2-butenoate
  • methyl trans-butenoate
  • methyl trans-crotonate
  • methyl-(2E)-but-2-enoat
  • trans- methylcrotonate
  • 2-Butenoic acid, methyl ester, (2E)-
  • 2-Butenoic acid, methyl ester, (E)-
  • trans-2-Butenoic acid methyl ester
  • Methyl E-propene-1-carboxylate
  • (E)-Crotonic acid methyl ester
  • (E)-2-Butenoic acid methyl ester
  • (2E)-2-Butenoic acid methyl ester
  • (E)-Methyl but-2-enoate
  • Methyl (E)-crotonate

US / EU / FDA / JECFA / FEMA / Scholar / Patents

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Other Information

(IUPAC):Atomic Weights of the Elements 2011 (pdf)
Videos:The Periodic Table of Videos
tgsc:Atomic Weights use for this web site
(IUPAC):Periodic Table of the Elements
CHEMBL:View
HMDB (The Human Metabolome Database):Search
Export Tariff Code:2916.19.5000
VCF-Online:VCF Volatile Compounds in Food
ChemSpider:View

PhysChem Properties

Material listed in food chemical codex No
Molecular weight 100.11715698242
Specific gravity @ 25 °C
Pounds per Gallon 8.13 to 8.18
Refractive Index 1.424 to 1.427 @ 20 °C
Boiling Point 118 to 120°C @ 760 mm Hg
Vapor Pressure 14.869 mmHg @ 25 °C
Vapor Density 3.46
Flash Point TCC Value 3.89 °C TCC
logP (o/w) 1.316 est
Solubility
alcohol Yes
water, slightly Yes
water, 1.241e+004 mg/L @ 25 °C (est) Yes
water No

Organoleptic Properties

Odor Type: Green
sharp, green, fruity
General comment At 1.00 % in dipropylene glycol. sharp green fruity

Occurrences

Safety Information

Safety information

Preferred SDS: View
European information :
Most important hazard(s):
Xi - Irritant
R 11 - Highly flammable.
R 36/37/38 - Irritating to eyes, respiratory system, and skin.
S 02 - Keep out of the reach of children.
S 16 - Keep away from sources of ignition - No Smoking.
S 24/25 - Avoid contact with skin and eyes.
S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S 36/37/39 - Wear suitable clothing, gloves and eye/face protection.
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Pictogram
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
oral-rat LD50 > 3200 mg/kg
(MFRM, 1979)

oral-mouse LD50 1600 mg/kg
(MFRM, 1979)

oral-mouse LD50 1600 mg/kg
Food and Cosmetics Toxicology. Vol. 17, Pg. 865, 1979.

oral-rat LD50 > 3200 mg/kg
Food and Cosmetics Toxicology. Vol. 17, Pg. 865, 1979.

Dermal Toxicity:
skin-rabbit LD50 > 5000 mg/kg
Food and Cosmetics Toxicology. Vol. 17, Pg. 865, 1979.

skin-guinea pig LD50 10 ml/kg
Food and Cosmetics Toxicology. Vol. 17, Pg. 865, 1979.

Inhalation Toxicity:
inhalation-rat LC > 19000 ppm/6H
Food and Cosmetics Toxicology. Vol. 17, Pg. 865, 1979.

Safety in use information

Category:
flavoring agents
IFRA Critical Effect:
Dermal sensitization
View the IFRA Standard
Recommendation for methyl (E)-2-butenoate usage levels up to:
PROHIBITED: Should not be used as a fragrance ingredient.
Maximised Survey-derived Daily Intakes (MSDI-EU): 0.12 (μg/capita/day)
Modified Theoretical Added Maximum Daily Intake (mTAMDI): 3900 (μg/person/day)
Threshold of Concern:1800 (μg/person/day)
Structure Class: I
Food categories according to Commission Regulation EC No. 1565/2000 (EC, 2000) in FGE.06 (EFSA, 2002a). According to the Industry the "normal" use is defined as the average of reported usages and "maximum use" is defined as the 95th percentile of reported usages (EFSA, 2002i).
Note: mg/kg = 0.001/1000 = 0.000001 = 1/1000000 = ppm.
average usage mg/kgmaximum usage mg/kg
Dairy products, excluding products of category 02.0 (01.0): 7.0000035.00000
Fats and oils, and fat emulsions (type water-in-oil) (02.0): 5.0000025.00000
Edible ices, including sherbet and sorbet (03.0): 10.0000050.00000
Processed fruit (04.1): 7.0000035.00000
Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2): --
Confectionery (05.0): 10.0000050.00000
Chewing gum (05.3): --
Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0): 5.0000025.00000
Bakery wares (07.0): 10.0000050.00000
Meat and meat products, including poultry and game (08.0): 2.0000010.00000
Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0): 2.0000010.00000
Eggs and egg products (10.0): --
Sweeteners, including honey (11.0): --
Salts, spices, soups, sauces, salads, protein products, etc. (12.0): 5.0000025.00000
Foodstuffs intended for particular nutritional uses (13.0): 10.0000050.00000
Non-alcoholic ("soft") beverages, excl. dairy products (14.1): 5.0000025.00000
Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2): 10.0000050.00000
Ready-to-eat savouries (15.0): 20.00000100.00000
Composite foods (e.g. casseroles, meat pies, mincemeat) - foods that could not be placed in categories 01.0 - 15.0 (16.0): 5.0000025.00000

Safety references

European Food Safety Athority(EFSA):Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies...

European Food Safety Authority (EFSA) reference(s):

Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in contact with Food (AFC) on a request from the Commission related to Flavouring Group Evaluation 5: Esters of 23 branched- and straight-chain aliphatic saturated primary alcohols and of one secondary alcohol, and 24 branched- and straight-chain unsaturated carboxylic acids from chemical groups 1, 2, and 5
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Flavouring Group Evaluation 5, Revision 1 (FGE.05Rev1):Esters of branched- and straight-chain aliphatic saturated primary alcohols and of one secondary alcohol, and branched- and straight-chain unsaturated carboxylic acids from chemical groups 1, 2, and 5 (Commission Regulation (EC) No 1565/2000 of 18 July 2000) [1] - Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in contact with Food (AFC)
View page or View pdf

Flavouring Group Evaluation 62 (FGE.62) Consideration of linear and branched-chain aliphatic unsaturated, unconjugated alcohols, aldehydes, acids, and related esters evaluated by JECFA (61st meeting) structurally related to esters of branched- and straight-chain aliphatic saturated primary alcohols and of one secondary alcohol, and branched- and straight-chain unsaturated carboxylic acids evaluated by EFSA in FGE.05 (2005) and to straight- and branched-chain aliphatic unsaturated primary alcohols, aldehydes, carboxylic acids, and esters evaluated by EFSA in FGE.06 (2004) (Commission Regulation (EC) No 1565/2000 of 18 July 2000)
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 71: Consideration of aliphatic, linear, alpha,beta-unsaturated carboxylic acids and related esters
View page or View pdf

Flavouring Group Evaluation 72 (FGE.72): Consideration of aliphatic, branched-chain saturated and unsaturated alcohols, aldehydes, acids, and related esters evaluated by the JECFA (61st meeting) structurally related to branched- and straight-chain unsaturated carboxylic acids. Esters of these and straight-chain aliphatic saturated alcohols evaluated by EFSA in FGE.05Rev2 (2010)
View page or View pdf

Flavouring Group Evaluation 5, Revision 2 (FGE.05Rev2): Branched- and straight-chain unsaturated carboxylic acids and esters of these with aliphatic saturated alcohols from chemical groups 1, 2, 3 and 5
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 95 (FGE.95): Consideration of aliphatic, linear or branched-chain saturated and unsaturated alcohols, aldehydes, acids and related esters evaluated by JECFA (69th meeting) structurally related to esters of branched- and straight-chain aliphatic saturated primary alcohols and of one secondary alcohol, and branched- and straight-chain unsaturated carboxylic acids evaluated by EFSA in FGE.05Rev1 (2008)
View page or View pdf

EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA Substance Registry Services (TSCA):623-43-8
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :638132
National Institute of Allergy and Infectious Diseases:Data
SCCNFP:opinion
WISER:UN 3272
WGK Germany:2
methyl (E)-but-2-enoate
Chemidplus:0000623438
RTECS:GQ5710000 for cas# 623-43-8