Ingredient Dictionary

TRANS-2-HEXENAL

(2E)-hexenal is a 2-hexenal in which the olefinic double bond has E configuration.

Korean limit: 0.002%

TRANS-2-HEXENAL Molecular structure — Molecular structure

How much products actually contain

No product states its amount yet.

Of the products containing it, 2 list it before the 1% line and 0 after it (usually 1% or less).

Products using this ingredient

2 of 2 confirmed · likeliest to carry enough first

Definition

(2E)-hexenal is a 2-hexenal in which the olefinic double bond has E configuration. It occurs naturally in a wide range of fruits, vegetables, and spices. It has a role as an antibacterial agent, a flavouring agent and a plant metabolite.

Source: PubChem

US FDA substance register · UNII 69JX3AIR1I · registered name 2-HEXENAL, (2E)- · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Gives the product a scentPERFUMING

Safety & regulatory references

Restricted: International fragrance standard (IFRA) · United Kingdom

Source: EU Cosmetics Regulation · IFRA fragrance standards · MFDS (Korea) cosmetic regulatory information · UK cosmetics regulations (OPSS)

South Korea

Maximum concentration : 0.002%

European Union

Product Type, body parts : (a) Oral products (b) Other products
Maximum concentration in ready for use preparation : (b) 0.002%

Source: MFDS (Korea) cosmetic regulatory information

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

EU Cosmetics Regulation, Annex III (restricted substances), entry 166 · maximum concentration (b) 0.002% · applies to (a) Oral products (b) Other products

Source: EU restricted substances (Annex III)

Restriction III/166 · Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

More data — names, identifiers, properties, test records, literature

Names & identifiers

TRANS-2-HEXENALINCI트렌스-2-헥사날Korean label name (MFDS standard)2-Hexenal, (E)-Synonym

CAS No.chemical registry number: 6728-26-3
EC No.EU chemical inventory number: 229-778-1
DTXSIDUS EPA chemical ID: DTXSID1041425
DTXCIDUS EPA compound ID: DTXCID9021425

IUPAC: (2E)-Hex-2-enal
Molecular formula: C6H10O
Molecular weight: 98.145 g/mol

Measured properties

Appearance: CBI, Liquid · Clear light yellow liquid, [Sigma-Aldrich MSDS]
Boiling point: 47.00 °C. @ 17.00 mm Hg · 47 °C (17mm Hg)
Solubility: Soluble in propylene glycol and most fixed oils, Very slightly soluble in water · Soluble (in ethanol)
Density: 0.841-0.848
Melting/freezing point: -55.63 ℃
Initial boiling point and range: 147 ℃
Flash point: 38 ℃
Vapour pressure: 6.6 ㎜Hg
Water solubility: 5260 ㎎/ℓ
Vapour density: 3.4
Relative density: 0.846
n-Octanol/water partition coefficient (Kow): 1.58
Molecular weight: 98.15

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: PubChem · KOSHA safety data sheets (Korea)

What products actually use it for

What the 27 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

Fragrance26
Flavouring and nutrient1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

2 skin studies and 0 eye studies are on record.

Classed as moderate2

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 2 studies

SkinSens1
Skin Sensitization · QSAR Predicted
SkinIrr2
Skin Irritation · QSAR Predicted