γ-庚内酯

Description

Gamma-Heptalactone · CAS 105-21-5 · C7H12O2. UNII U4XIN3U7DH. Boiling Point: 61-62 °C (2 mmHg); Density: 0.997-1.004 (20 °C); Refractive Index: 1.439-1.445.

Identification

CAS Registry Number	105-21-5
PubChem CID	7742
Molecular formula	C7H12O2
IUPAC name	5-propyloxolan-2-one
UNII (FDA)	U4XIN3U7DH
FEMA number	2539
JECFA number	225

Computed Descriptors

Molecular Weight	128.17
XLogP3	1.1
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	2
Exact Mass	128.083729621
Monoisotopic Mass	128.083729621
Topological Polar Surface Area	26.3
Heavy Atom Count	9
Formal Charge	0

Physical & Chemical Properties

Boiling Point	61-62 °C (2 mmHg)
Density	0.997-1.004 (20 °C)
Refractive Index	1.439-1.445

Physical description & handling notes

• Colorless liquid; [Aldrich MSDS]
• colourless, slightly oily liquid with a coconut, sweet, malty, caramel odour
• miscible with alcohol and most fixed oils
• (in ethanol)

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Substance added to food: FLAVORING AGENT OR ADJUVANT Flavoring Agents FLAVOURING_AGENT: Flavouring Agent No safety concern at current levels of intake when used as a flavouring agent TRS 884-JECFA 49/42
GHS notification summary	94.8% (1578 / 1664)

GHS Hazard Classification

GHS notification summary	94.8% (1578 / 1664)

Documented Uses

• Used as flavoring agent or adjuvant; [FDA]
• Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes
• Flavoring Agents -> JECFA Flavorings Index
• 2(3H)-Furanone, dihydro-5-propyl-: ACTIVE

Synonyms

gamma-Heptalactone; 105-21-5; 4-Heptanolide; 5-propyloxolan-2-one; gamma-Heptanolactone; 2(3H)-Furanone, dihydro-5-propyl-; Heptan-4-olide; 1,4-Heptanolide; Heptanolide-4,1; gamma-Propiobutyrolactone; gamma-Propyl-gamma-butyrolactone; FEMA No. 2539; .gamma.-Heptalactone; .gamma.-Heptanolactone; 4-Hydroxyheptanoic acid, gamma-lactone; gamma-Heptalactone (natural)

Frequently Asked Questions

What are the CAS number and molecular formula of Gamma-Heptalactone?

CAS 105-21-5; molecular formula C7H12O2; molecular weight — g/mol.

What other names is Gamma-Heptalactone known by?

gamma-Heptalactone, 105-21-5, 4-Heptanolide, 5-propyloxolan-2-one, gamma-Heptanolactone, 2(3H)-Furanone, dihydro-5-propyl-.

What is the regulatory status of Gamma-Heptalactone?

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

Is Gamma-Heptalactone classified as hazardous?

94.8% of GHS notifications report no hazard classification (1578 of 1664).

What are the key physical properties of Gamma-Heptalactone?

Boiling Point: 61-62 °C (2 mmHg); Density: 0.997-1.004 (20 °C); Refractive Index: 1.439-1.445.

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.