Alpha-Terpineol

CAS 98-55-5 · PubChem CID 17100 · C10H18O · 154.25 g/mol

Also called alpha-TERPINEOL, 2-(4-methylcyclohex-3-en-1-yl)propan-2-ol, p-Menth-1-en-8-ol, 1-p-Menthen-8-ol, Terpineol 350.

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Opens the builder with Alpha-Terpineol loaded
as component 1 at 100%.

01GHS classification

Irritant

Signal word

Warning

European Chemicals Agency (ECHA) — fetched 2026-08-28

Precautionary statement codes

P264, P264+P265, P280, P302+P352, P305+P351+P338, P321, P332+P317, P337+P317, and P362+P364

European Chemicals Agency (ECHA) — fetched 2026-08-28

H315Causes skin irritation

European Chemicals Agency (ECHA) — fetched 2026-08-28

H319Causes serious eye irritation

European Chemicals Agency (ECHA) — fetched 2026-08-28

02Physical and chemical properties

Appearance

White solid with an odor of lilac; [HSDB] Some forms are liquid; [Merck Index] White low melting solid; mp = 31-32 deg C; [MSDSonline]

Haz-Map, Information on Hazardous Chemicals and Occupational Diseases — fetched 2026-08-29

Odour

Floral, lilac

Hazardous Substances Data Bank (HSDB) — fetched 2026-08-29

Melting point

35-40 °C

Hazardous Substances Data Bank (HSDB) — fetched 2026-08-29

Boiling point

218-221 °C

Hazardous Substances Data Bank (HSDB) — fetched 2026-08-28

Flash point

no value printed

unsourced — inference candidate

Auto-ignition temperature

no value printed

unsourced — inference candidate

Flammable limits

no value printed

unsourced — inference candidate

Vapour pressure

VP: 5 mm Hg at 80 to 81 mm Hg /L-alpha-Terpineol/

Hazardous Substances Data Bank (HSDB) — fetched 2026-08-28

Relative density

0.935 at 20 °C/20 °C

Hazardous Substances Data Bank (HSDB) — fetched 2026-08-28

Solubility in water

1:8 or more in 50% alcohol; Sol in propylene glycol

Hazardous Substances Data Bank (HSDB) — fetched 2026-08-28

Partition coefficient, log Kow

log Kow = 2.98

Hazardous Substances Data Bank (HSDB) — fetched 2026-08-28

Viscosity

no value printed

unsourced — inference candidate

03Toxicological information

No published acute toxicity value was found for this substance in the sources we read. On a document, Section 11 would print unsourced — inference candidate rather than an estimate.

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What we read

European Chemicals Agency (ECHA), Hazardous Substances Data Bank (HSDB), Haz-Map, Information on Hazardous Chemicals and Occupational Diseases.

15 sourced records for this substance are in the ledger. Values dated more than 30 days ago are re-fetched on the next document.

04Also in the ledger

Browse every chemical in the ledger · What a GHS safety data sheet contains