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W319406

Sigma-Aldrich

2-Methyl-2-pentenal

≥97%, FG

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Synonym(s):
2,4-dimethyl crotonaldehyde, 2-methylpent-2-enal
Linear Formula:
C2H5CH=C(CH3)CHO
CAS Number:
Molecular Weight:
98.14
FEMA Number:
3194
EC Number:
Council of Europe no.:
2129
MDL number:
PubChem Substance ID:
Flavis number:
5.090
NACRES:
NA.21

biological source

synthetic

Quality Level

grade

FG
Fragrance grade
Halal
Kosher

Agency

follows IFRA guidelines
meets purity specifications of JECFA

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 178/2002

Assay

≥97%

refractive index

n20/D 1.45 (lit.)

bp

137-138 °C/765 mmHg (lit.)

density

0.86 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

no known allergens

Organoleptic

green; pungent; fruity

SMILES string

[H]C(=O)\C(C)=C\CC

InChI

1S/C6H10O/c1-3-4-6(2)5-7/h4-5H,3H2,1-2H3/b6-4+

InChI key

IDEYZABHVQLHAF-GQCTYLIASA-N

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This Item
W321818W340707W316315
2-Methyl-2-pentenal ≥97%, FG

Sigma-Aldrich

W319406

2-Methyl-2-pentenal

trans-2-Pentenal ≥95%, FG

Sigma-Aldrich

W321818

trans-2-Pentenal

grade

FG, Fragrance grade, Halal, Kosher

grade

FG, Halal, Kosher

grade

FG, Halal, Kosher

grade

FG, Halal, Kosher, natural (US)

agency

follows IFRA guidelines, meets purity specifications of JECFA

agency

-

agency

meets purity specifications of JECFA

agency

meets purity specifications of JECFA

assay

≥97%

assay

≥95%

assay

≥99%

assay

≥97%

refractive index

n20/D 1.45 (lit.)

refractive index

n20/D 1.440-1.446 (lit.)

refractive index

n20/D 1.448 (lit.)

refractive index

n20/D 1.5070 (lit.)

bp

137-138 °C/765 mmHg (lit.)

bp

80-81 °C/160 mmHg (lit.)

bp

116-119 °C/752 mmHg (lit.), 116-122 °C

bp

67 °C/10 mmHg (lit.)

General description

2-Methyl-2-pentenal has been identified as one of the major volatile flavor compounds in chive, caucas, onion and leek.

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Aquatic Chronic 3 - Eye Dam. 1 - Flam. Liq. 3 - Skin Sens. 1

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

89.6 °F - closed cup

Flash Point(C)

32 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Volatile flavor components of caucas
Nishimura H, et al.
Journal of Agricultural and Food Chemistry, 19(5), 992-994 (1971)
The volatile carbonyls and alcohols in the flavor substances of onion (Allium cepa).
Sp?re CG & Virtanen AI.
Acta Chemica Scandinavica, 15(6) (1961)
Volatiles from chives (Allium schoenoprasum).
Wahlroos O & Virtanen AI
Acta Chemica Scandinavica, 19(6). (1965)
Volatile flavor components of leek.
Schreyen L, et al.
Journal of Agricultural and Food Chemistry, 24(2), 336-341 (1976)

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