Ingredient Dictionary

2-OCTANOL

Octan-2-ol is an octanol carrying the hydroxy group at position 2.

Definition

Octan-2-ol is an octanol carrying the hydroxy group at position 2. It has a role as a volatile oil component and a plant metabolite. It is a secondary alcohol and an octanol.

Source: PubChem

US FDA substance register · UNII 66B0DD5E40 · registered name 2-OCTANOL · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Gives the product a scentPERFUMING

Safety & regulatory references

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

Source: Korea toxic substances GHS register (NIER)

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

Names & identifiers

2-OCTANOLINCI

CAS No.chemical registry number: 123-96-6
EC No.EU chemical inventory number: 204-667-0
DTXSIDUS EPA chemical ID: DTXSID0027014
DTXCIDUS EPA compound ID: DTXCID607014

IUPAC: Octan-2-ol
Molecular formula: C8H18O
Molecular weight: 130.231 g/mol

Measured properties

Appearance: Liquid · Colorless oily liquid, [ICSC]
Odour: Characteristically disagreeable, but aromatic
Boiling point: 179 °C · BP: 86 °C at 20 mm Hg, specific optical rotation: -9.9 deg at 17 °C/D /L-form/
Melting point: -31.6 °C · Soluble in alcohol, ether, acetone, max absorption (vapor): 196 nm, max absorption (hexane): 175 nm (log e = 2.5), mp: -31.6 °C /dl-Form/
Solubility: In water, 1120 mg/L at 25 C · Soluble in ethanol, ethyl ether, acetic acetone
Density: 0.8193 g/cu cm at 20 °C · Relative density (water = 1): 0.82
Stability: Chemical stability: Stable under recommended storage conditions.
Colour: colourless
Melting/freezing point: -38.6 ℃
Initial boiling point and range: 178.5 ℃
Flash point: 76 ℃
Evaporation rate: 0.1
Vapour pressure: 32 ㎜Hg (25℃)
Water solubility: 0.112 g/100㎖ (25℃)
Vapour density: 4.5
Relative density: 0.82
n-Octanol/water partition coefficient (Kow): 2.72

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 11 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.

Solvent3
Fragrance3
Flavouring and nutrient2
Intermediate2
Defoamer1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

5 skin studies and 3 eye studies are on record.

Classed as low2

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 8 studies

Ambiguous
skin corrosion: in vitro / ex vivo · Screening · other guideline: OECD Guideline 431 according to
Classification not possible
Skin Sensitization · Screening
Not likely to be sensitizing
skin sensitisation: in vivo (LLNA) · Screening · according to OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
Category 6.3B (Category 3)
Skin Irritation · Read Across
Not classified
Skin Irritation · Screening
Serious eye damage/eye irritation - Category 2
Eye Irritation · Screening
Category 6.4A (Category 2A)
Eye Irritation · Read Across
Category 2
Eye Irritation · Screening