R(-)-2-pentanol

Description

R(-)-2-pentanol · CAS 31087-44-2 · C5H12O. UNII 04G7050365. Boiling Point: 234 °F at 760 mmHg (NIOSH, 2024); Boiling Point: 119 °C; Boiling Point: 118-119 °C.

Identification

CAS Registry Number	31087-44-2
PubChem CID	22386
Molecular formula	C5H12O
IUPAC name	pentan-2-ol
UNII (FDA)	04G7050365
FEMA number	3316
JECFA number	280

Computed Descriptors

Molecular Weight	88.15
XLogP3	1.2
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	2
Exact Mass	88.088815002
Monoisotopic Mass	88.088815002
Topological Polar Surface Area	20.2
Heavy Atom Count	6
Formal Charge	0

Physical & Chemical Properties

Boiling Point	234 °F at 760 mmHg (NIOSH, 2024)
Boiling Point	119 °C
Boiling Point	118-119 °C
Boiling Point	234 °F
Melting Point	-73 °C
Melting Point	-50 °C
Flash Point	95 °F (NIOSH, 2024)
Flash Point	33 °C
Flash Point	(oc) 95 °F
Solubility	44.6 mg/mL at 25 °C

Physical description & handling notes

• Sec-amyl alcohol appears as a clear colorless liquid with a strong odor. Moderately toxic by ingestion and vapors may irritate skin and eyes. Vapors are heavier than air.
• Colorless liquid (racemic form); [Hawley]
• Liquid
• COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.
• colourless liquid with a winey, ethereal odour
• Colorless liquid with a disagreeable odor.

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Substance added to food: FLAVORING AGENT OR ADJUVANT Flavoring Agents FLAVOURING_AGENT: Flavouring Agent Fusel Oil, Green No safety concern at current levels of intake when used as a flavouring agent
GHS notification summary	0.6% (11 / 1753)

GHS Hazard Classification

GHS notification summary	0.6% (11 / 1753)
Reported hazard statements	H226 (99.3%), H332 (99.4%), H335 (99.4%), H315 (100%), H319 (100%)

Documented Uses

• Used as solvent for paints and lacquers and to make drugs; [Hawley] Used to make catalyst systems and methanol; Also used as a solvent for primers and for extracting 2-hydroxy-4-methylthiobutyric acid; [CHEMINFO]
• Painting (Solvents) [Category: Paint]
• Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes
• Flavoring Agents -> JECFA Flavorings Index

Synonyms

2-PENTANOL; Pentan-2-ol; 6032-29-7; sec-Amyl alcohol; Methylpropylcarbinol; sec-Pentyl alcohol; 2-Pentyl alcohol; 1-Methyl-1-butanol; Methyl propyl carbinol; 2-Hydroxypentane; Pentanol-2; alpha-Methylbutanol; 1-Methylbutanol; sec-n-Amyl alcohol; Isoamyl alcohol, secondary; FEMA No. 3316

Frequently Asked Questions

What are the CAS number and molecular formula of R(-)-2-pentanol?

CAS 31087-44-2; molecular formula C5H12O; molecular weight — g/mol.

What other names is R(-)-2-pentanol known by?

2-PENTANOL, Pentan-2-ol, 6032-29-7, sec-Amyl alcohol, Methylpropylcarbinol, sec-Pentyl alcohol.

What is the regulatory status of R(-)-2-pentanol?

Documented regulatory listings: EU Flavoring substances; FDA Substance added to food: FLAVORING AGENT OR ADJUVANT; Flavoring Agents.

Is R(-)-2-pentanol classified as hazardous?

0.6% of GHS notifications report no hazard classification (11 of 1753).

What are the key physical properties of R(-)-2-pentanol?

Boiling Point: 234 °F at 760 mmHg (NIOSH, 2024); Boiling Point: 119 °C; Boiling Point: 118-119 °C; Boiling Point: 234 °F.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.