4-Acetylpyridine

Description

4-Acetylpyridine · CAS 1122-54-9 · C7H7NO. UNII G47437IOW7. Boiling Point: 414 °F at 760 mmHg (NTP, 1992); LogP: 0.4.

Identification

CAS Registry Number	1122-54-9
PubChem CID	14282
Molecular formula	C7H7NO
IUPAC name	1-pyridin-4-ylethanone
UNII (FDA)	G47437IOW7

Computed Descriptors

Molecular Weight	121.14
XLogP3	0.5
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	1
Exact Mass	121.052763847
Monoisotopic Mass	121.052763847
Topological Polar Surface Area	30
Heavy Atom Count	9
Formal Charge	0

Physical & Chemical Properties

Boiling Point	414 °F at 760 mmHg (NTP, 1992)
LogP	0.4

Physical description & handling notes

• 4-acetylpyridine is a dark amber liquid. (NTP, 1992)
• greater than 200 °F (NTP, 1992)
• greater than or equal to 100 mg/mL at 66 °F (NTP, 1992)
• 1.111 at 74.1 °F (NTP, 1992) - Denser than water; will sink
• 4.9 mmHg at 77 °F ; 6.1 mmHg at 94.1 °F (NTP, 1992)

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances Flavoring Agents
GHS notification summary	63.6% (89 / 140)

GHS Hazard Classification

GHS notification summary	63.6% (89 / 140)
Reported hazard statements	H315 (36.4%), H319 (34.3%), H335 (32.9%)

Documented Uses

• Ethanone, 1-(4-pyridinyl)-: ACTIVE

Synonyms

4-Acetylpyridine; 1122-54-9; 1-pyridin-4-ylethanone; Methyl 4-pyridyl ketone; Ethanone, 1-(4-pyridinyl)-; Ketone, methyl 4-pyridyl; Pyridine, 4-acetyl-; 4-Pyridyl methyl ketone; 1-(4-PYRIDINYL)ETHANONE; NSC-111; G47437IOW7; DTXSID0022147; RefChem:517351; DTXCID402147; 214-350-9; 1-(pyridin-4-yl)ethan-1-one

Frequently Asked Questions

What are the CAS number and molecular formula of 4-Acetylpyridine?

CAS 1122-54-9; molecular formula C7H7NO; molecular weight — g/mol.

What other names is 4-Acetylpyridine known by?

4-Acetylpyridine, 1122-54-9, 1-pyridin-4-ylethanone, Methyl 4-pyridyl ketone, Ethanone, 1-(4-pyridinyl)-, Ketone, methyl 4-pyridyl.

What is the regulatory status of 4-Acetylpyridine?

Documented regulatory listings: EU Flavoring substances; Flavoring Agents.

Is 4-Acetylpyridine classified as hazardous?

63.6% of GHS notifications report no hazard classification (89 of 140).

What are the key physical properties of 4-Acetylpyridine?

Boiling Point: 414 °F at 760 mmHg (NTP, 1992); LogP: 0.4.

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.