Ingredient Dictionary

AMYL ALCOHOL

Pentan-1-ol is a short-chain primary fatty alcohol that is pentane in which a hydrogen of one of the methyl groups is substituted by a hydroxy group.

Definition

Pentan-1-ol is a short-chain primary fatty alcohol that is pentane in which a hydrogen of one of the methyl groups is substituted by a hydroxy group. It has been isolated from Melicope ptelefolia. It has a role as a plant metabolite and a human metabolite. It is a pentanol and a short-chain primary fatty alcohol.

Source: PubChem

US FDA substance register · UNII M9L931X26Y · registered name 1-Pentanol · 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

AMYL ALCOHOLINCI1-PentanolSynonym

CAS No.chemical registry number: 71-41-0
EC No.EU chemical inventory number: 200-752-1
DTXSIDUS EPA chemical ID: DTXSID6021741
DTXCIDUS EPA compound ID: DTXCID101741

IUPAC: Pentan-1-ol
Molecular formula: C5H12O
Molecular weight: 88.15 g/mol

Measured properties

Appearance: N-pentanol appears as a colorless liquid with a mild to moderately strong odor. Less dense than water. Flash point 91 °F. Boiling point 280 °F. Vapors heavier than air. Moderately toxic by ingestion. Vapors may irritate skin and eyes. Used as a solvent and to make other chemicals. · Liquid
Odour: CHARACTERISTIC FUSEL-LIKE ODOR · Mild odor
Boiling point: 280 °F at 760 mmHg (NTP, 1992) · 137.5 °C
Melting point: -110 °F (NTP, 1992) · -79 °C
Solubility: 10 to 50 mg/mL at 63 °F (NTP, 1992) · Miscible with alcohol, ether
Density: 0.818 at 59 °F (USCG, 1999) - Less dense than water, will float · 0.8146 @ 20 °C/4 °C
Viscosity: 5 mm²/s at 20 °C
Colour: colourless
Odour threshold: 0.12 ppm
Melting/freezing point: -78 ℃
Initial boiling point and range: 137~139 ℃
Flash point: 43 ℃
Upper/lower flammability or explosive limits: 1.1 / 10 %
Vapour pressure: 2.2 ㎜Hg (at 25°C)
Water solubility: 22000 ㎎/ℓ (2.20E+04 at 25deg c)
Vapour density: 3.0 ()
Relative density: 0.818 (at 15°C)
n-Octanol/water partition coefficient (Kow): 1.51 (at 25 °C)
Auto-ignition temperature: 300 ℃
Molecular weight: 88.15 (g/mol)

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 12 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.

Fragrance3
Flavouring and nutrient3
Processing aids not otherwise specified2
Intermediate1
Monomers1
Solids separation (precipitating) agent, not other1
Solvent1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

5 skin studies and 4 eye studies are on record.

Classed as moderate1

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 9 studies

Category 6.3A (Category 2)
Skin Irritation · Read Across
Category 2
Skin Irritation · Screening
Classification not possible
Skin Sensitization · Screening
Skin corrosion/irritation - Category 2
Skin Irritation · Screening
Skin Irrit. 2
Skin Irritation · Authoritative
Category 6.4A (Category 2A)
Eye Irritation · Read Across
Serious eye damage/eye irritation - Category 2
Eye Irritation · Screening
Category 2A
Eye Irritation · Screening
Corrosive or Irritation Persists for > 21 days
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to