Are there usage precautions?

보습제, 항균제 (추천 피부타입: 모든피부타입)

All ingredients

Ingredient Dictionary

1,5-PENTANEDIOL

Pentane-1,5-diol is a primary alcohol.

Definition

Pentane-1,5-diol is a primary alcohol.

Source: PubChem

US FDA substance register · UNII 07UXZ0SCST · registered name 1,5-Pentanediol · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Base that dissolves other ingredientsSOLVENT

Safety & regulatory references

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

Source: Korea toxic substances GHS register (NIER)

Reviewed by CIR: Safety Assessment of Alkane Diols as Used in Cosmetics

Source: US Cosmetic Ingredient Review (CIR)

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

Official labels & definitions

JCIA labelling name １，５－ペンタンジオール: 本品は、次の化学式で表される有機化合物である。

Source: JCIA labelling names (Japan)

Names & identifiers

1,5-PENTANEDIOLINCI1,5-펜탄다이올Korean label name (MFDS standard)１，５－ペンタンジオールJapanese labelling name

CAS No.chemical registry number: 111-29-5
EC No.EU chemical inventory number: 203-854-4
DTXSIDUS EPA chemical ID: DTXSID2041256
DTXCIDUS EPA compound ID: DTXCID0021256

IUPAC: Pentane-1,5-diol
Molecular formula: C5H12O2
Molecular weight: 104.149 g/mol

Measured properties

Appearance: CBI, Liquid · Viscous liquid, [Merck Index] Colorless viscous liquid, Hygroscopic, [Alfa Aesar MSDS]
Boiling point: 240 °C · 239 °C @760 [mm Hg]
Melting point: -18 °C
Solubility: Miscible with water · Soluble in water
Density: 0.9941 g/cm cu at 20 °C, 0.9858 g/cm cu at 25 °C · 0.994 @ 20°C
Stability: Stable under recommended storage conditions.
Viscosity: 128 mPa.s at 20 °C · 122.80 cP (20.25 C)
Colour: colourless
pH: 7.5 ((25 ℃))
Melting/freezing point: -18~-15 ℃
Initial boiling point and range: 238~242 ℃
Flash point: 135 ℃
Upper/lower flammability or explosive limits: 13.2 / 1.4 %
Vapour pressure: 0.0039 ㎜Hg ((25 ℃))
Vapour density: 3.59
Relative density: 0.9925-0.9941
n-Octanol/water partition coefficient (Kow): 0.27
Auto-ignition temperature: 334 ℃
Molecular weight: 104.15

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 17 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.

Solvent10
Softener and conditioner4
Intermediate1
Humectant1
Diluent1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

2 skin studies and 2 eye studies are on record.

Classed as low1

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 4 studies

Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · other guideline: Federal Register 38 No 187 s 1500.41 ( Haut) und s 1500.42 (Auge), S. 27019 vom 27.09.73 . according to OECD Guideline 404 (Acute Dermal Irritation / Corrosion) equivalent or similar to
Category 6.3B (Category 3)
Skin Irritation · Read Across
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · other guideline: Federal Register 38 No 187 s 1500.41 ( Haut) und s 1500.42 (Auge), S. 27019 vom 27.09.73 . according to OECD Guideline 405 (Acute Eye Irritation / Corrosion) equivalent or similar to
Category 6.4A (Category 2A)
Eye Irritation · Read Across