2,5-二甲基吡嗪

Description

2,5-dimethylpyrazine is identified by CAS 123-32-0, molecular formula C6H8N2 and molecular weight 108.07 g/mol. UNII V99Y0MUY1Q; ChEBI 89762; InChIKey LCZUOKDVTBMCMX-UHFFFAOYSA-N. Boiling Point: 154.00 to 156.00 °C. @ 760.00 mm Hg; Boiling Point: 155 °C; Melting Point: 15 °C.

Identification

CAS Registry Number	123-32-0
PubChem CID	31252
Molecular formula	C6H8N2
Molecular weight	108.07 g/mol
IUPAC name	2,5-dimethylpyrazine
InChIKey	LCZUOKDVTBMCMX-UHFFFAOYSA-N
UNII (FDA)	V99Y0MUY1Q
ChEBI ID	CHEBI:89762
FEMA number	3272
JECFA number	766

Computed Descriptors

Molecular Weight	108.14
XLogP3	0.6
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	108.068748264
Monoisotopic Mass	108.068748264
Topological Polar Surface Area	25.8
Heavy Atom Count	8
Formal Charge	0

Physical & Chemical Properties

Boiling Point	154.00 to 156.00 °C. @ 760.00 mm Hg
Boiling Point	155 °C
Melting Point	15 °C
Density	0.982-1.000
Vapor Pressure	1.5 [mmHg]
LogP	0.63
Refractive Index	1.497-1.503

Physical description & handling notes

• Colorless liquid with a pleasant odor; mp = 15 deg C; [Alfa Aesar MSDS]
• Liquid
• colourless to slightly yellow liquid with an earthy, potato-like odour
• soluble in water, organic solvents, oils
• miscible at room temperature (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 Cocoa, Roast Beef, Roasted Nut No safety concern at current levels of intake when used as a flavouring agent

GHS Hazard Classification

Reported hazard statements	H302 (100%), H226

Documented Uses

• Used as flavoring agent or adjuvant; [FDA]
• Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes
• Flavoring Agents -> JECFA Flavorings Index
• Pyrazine, 2,5-dimethyl-: ACTIVE
• 2,5-dimethylpyrazine (Class: Other Substances, Added Date: 06-2014)

Synonyms

2,5-DIMETHYLPYRAZINE; 123-32-0; Pyrazine, 2,5-dimethyl-; 2,5-Dimethyl-1,4-diazine; Ketine; FEMA No. 3272; V99Y0MUY1Q; NSC-49139; DTXSID6047652; RefChem:82971; DTXCID4027652; 204-618-3; 2,5-Dimethyl pyrazine; NSC 49139; 2,5-Dimethylpiazine; 2,5-Dimethylparadiazine

Frequently Asked Questions

What are the CAS number and molecular formula of 2,5-dimethylpyrazine?

CAS 123-32-0; molecular formula C6H8N2; molecular weight 108.07 g/mol.

What other names is 2,5-dimethylpyrazine known by?

2,5-DIMETHYLPYRAZINE, 123-32-0, Pyrazine, 2,5-dimethyl-, 2,5-Dimethyl-1,4-diazine, Ketine, FEMA No. 3272.

What is the regulatory status of 2,5-dimethylpyrazine?

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

Is 2,5-dimethylpyrazine classified as hazardous?

Hazard statements reported: H302, H226.

What are the key physical properties of 2,5-dimethylpyrazine?

Boiling Point: 154.00 to 156.00 °C. @ 760.00 mm Hg; Boiling Point: 155 °C; Melting Point: 15 °C; Density: 0.982-1.000.

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.