γ-巴豆酸内酯

Description

gamma-crotonolactone · CAS 497-23-4 · C4H4O2. UNII 8KXK25H388. Boiling Point: BP: 86-87 °C at 12 mm Hg; Boiling Point: 86.00 to 87.00 °C. @ 12.00 mm Hg; Boiling Point: 52-53 °C.

Identification

CAS Registry Number	497-23-4
PubChem CID	10341
Molecular formula	C4H4O2
IUPAC name	2H-furan-5-one
UNII (FDA)	8KXK25H388
FEMA number	4138
JECFA number	2000

Computed Descriptors

Molecular Weight	84.07
XLogP3	-0.6
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	84.021129366
Monoisotopic Mass	84.021129366
Topological Polar Surface Area	26.3
Heavy Atom Count	6
Formal Charge	0

Physical & Chemical Properties

Boiling Point	BP: 86-87 °C at 12 mm Hg
Boiling Point	86.00 to 87.00 °C. @ 12.00 mm Hg
Boiling Point	52-53 °C
Melting Point	4-5 °C
Melting Point	4.5 °C
Flash Point	101 °C (214 °F) (Closed cup)
Density	1.185 mg/L at 25 °C
Density	1.183-1.187
LogP	log Kow = -0.60
LogP	-0.60

Physical description & handling notes

• Liquid
• Colourless to pale brown yellow clear liquid; Rich winey meat-like aroma
• Soluble in water
• Soluble (in ethanol)
• Stable under recommended storage conditions.
• Index of refraction: 1.469 at 20 °C/D

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Substance added to food: FLAVORING AGENT OR ADJUVANT Flavoring Agents FLAVOURING_AGENT: Flavouring Agent 4-HYDROXY-2-BUTENOIC ACID γ-LACTONE No safety concern at current levels of intake when used as a flavouring agent

GHS Hazard Classification

Reported hazard statements	H302 (96.8%), H315, H319, H335

Documented Uses

• Appetite Depressant, Immunosuppressive Agent
• Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes
• Flavoring Agents -> JECFA Flavorings Index

Synonyms

2(5H)-Furanone; 497-23-4; Furan-2(5H)-one; Isocrotonolactone; 2-Butenolide; 2H-furan-5-one; 2-Oxo-2,5-dihydrofuran; 2,5-dihydrofuran-2-one; 4-Hydroxy-2-butenoic acid lactone; gamma-Crotolactone; alpha,beta-Crotonolactone; 2,5-Dihydrofuranone; delta,alpha,beta-Butenolide; gamma-Hydroxycrotonic acid lactone; 2-Butenoic acid gamma-lactone; 2-Butenoic acid-gamma-lactone

Frequently Asked Questions

What are the CAS number and molecular formula of gamma-crotonolactone?

CAS 497-23-4; molecular formula C4H4O2; molecular weight — g/mol.

What other names is gamma-crotonolactone known by?

2(5H)-Furanone, 497-23-4, Furan-2(5H)-one, Isocrotonolactone, 2-Butenolide, 2H-furan-5-one.

What is the regulatory status of gamma-crotonolactone?

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

Is gamma-crotonolactone classified as hazardous?

Hazard statements reported: H302, H315, H319, H335.

What are the key physical properties of gamma-crotonolactone?

Boiling Point: BP: 86-87 °C at 12 mm Hg; Boiling Point: 86.00 to 87.00 °C. @ 12.00 mm Hg; Boiling Point: 52-53 °C; Melting Point: 4-5 °C.

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.