Ingredient Dictionary

UNDECYL ALCOHOL

Undecan-1-ol is a primary alcohol that is undecane substituted by a hydroxy group at position 1.

How much products actually contain

No product states its amount yet.

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

Products using this ingredient

1 of 1 confirmed · likeliest to carry enough first

BIODERMANode DS+ Shampoo 125ml

Definition

Undecan-1-ol is a primary alcohol that is undecane substituted by a hydroxy group at position 1. It has a role as a flavouring agent and a plant metabolite. It is a primary alcohol and an undecanol.

Source: PubChem

US FDA substance register · UNII 06MJ0P28T3 · registered name UNDECYL ALCOHOL · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Reduces sebum productionANTI-SEBUMListed as a fragrance-composition material (not a claim that it adds scent)FRAGRANCEAdjusts thicknessVISCOSITY CONTROLLINGKeeps skin in good condition (CosIng catch-all)SKIN CONDITIONINGMakes skin soft and smoothSKIN CONDITIONING - EMOLLIENT

Safety & regulatory references

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

Source: Korea toxic substances GHS register (NIER)

Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

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

Official labels & definitions

JCIA labelling name ウンデシルアルコール: 本品は、次の化学式で表される脂肪族アルコールである。

Source: JCIA labelling names (Japan)

Names & identifiers

UNDECYL ALCOHOLINCI운데실알코올Korean label name (MFDS standard)1-UndecanolSynonymウンデシルアルコールJapanese labelling name

CAS No.chemical registry number: 112-42-5
EC No.EU chemical inventory number: 203-970-5
DTXSIDUS EPA chemical ID: DTXSID0026915
DTXCIDUS EPA compound ID: DTXCID706915

IUPAC: Undecan-1-ol
Molecular formula: C11H24O
Molecular weight: 172.312 g/mol

Measured properties

Appearance: 1-undecanol appears as a water-white liquid with a mild odor. Flash point 250 °F. Slightly soluble in water. Considered a marine pollutant by DOT. Immediate steps should be taken to limit its spread to the environment. As a liquid it can easily penetrate the soil and contaminate groundwater or streams. Mildly irritating to both the eyes and skin. · Liquid, CBI
Odour: Citrus
Boiling point: 473 °F at 760 mmHg (USCG, 1999) · 243 °C at 760 mm Hg
Melting point: 60.6 °F (USCG, 1999) · 19 °C
Solubility: Soluble in ethanol, very soluble in ether · Soluble in 60% alcohol
Density: 0.835 at 68 °F (USCG, 1999) - Less dense than water, will float · 0.8298 at 20 °C/4 °C
Viscosity: 17.2 mPa.s at 20 °C · 17.2 cP (20 C)
Colour: colourless
Melting/freezing point: 19 ℃
Initial boiling point and range: 243 ℃
Flash point: &amp, gt, 93.3 ℃ ((c.c.))
Upper/lower flammability or explosive limits: 5.2 / 0.7 %
Vapour pressure: 0.00297 ㎜Hg ( (25 ℃))
Water solubility: 19.1 ㎎/ℓ ( (25 ℃))
Relative density: 0.830
n-Octanol/water partition coefficient (Kow): 4.28
Auto-ignition temperature: 277 ℃
Molecular weight: 172.31

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 29 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.

Surfactant (surface active agent)12
Fragrance4
Intermediate3
Flavouring and nutrient2
Processing aids not otherwise specified2
Softener and conditioner2
Pharmaceutical (EPA)1
Deodorizer1

2 other uses

Solvent1
Viscosity modifier1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

3 skin studies and 3 eye studies are on record.

Classed as highly irritating1Classed as moderate1

The studies disagree (the most common conclusion covers 50%), so they do not establish that this ingredient is irritating. These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 6 studies

Severe Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to
Classification not possible
Skin Sensitization · Screening
Category 2
Skin Irritation · Screening
Category 6.4A (Category 2A)
Eye Irritation · Read Across
Moderate or Mild Irritation
eye irritation: in vivo · Screening · EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion) Cited as Directive 84/449/EEC, B.5 according to
Category 2B
Eye Irritation · Screening