A

Acetophenone

IUPAC: 1-phenylethanone

C8H8O Organic Compounds CAS 98-86-2
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Quick Reference
Formula / NotationC8H8O
CAS Number98-86-2
Molecular Weight120.15
Melting Point67.5 °F (USCG, 1999)
Boiling Point395.1 °F at 760 mmHg (USCG, 1999)
Density1.028 at 68 °F (USCG, 1999) - Denser than water; will sink
SolubilityIn water, 6,130 mg/L at 25 °C
AppearanceAcetophenone appears as a colorless liquid with a sweet pungent taste and odor resembling the odor of oranges. Freezes under cool conditions. Slightly soluble in water and denser than water. Hence ...
Also Known As1-phenylethanone; 98-86-2; 1-Phenylethanone; Phenyl methyl ketone; Methyl phenyl ketone; Acetylbenzene; Hypnone; Ethanone, 1-phenyl-; Benzoyl methide; 1-phenylethan-1-one
CategoryOrganic Compounds

What is Acetophenone?

Acetophenone is a methyl ketone that is acetone in which one of the methyl groups has been replaced by a phenyl group. It has a role as a xenobiotic, a photosensitizing agent and an animal metabolite.

Formula & Notation

C8H8O

IUPAC Name: 1-phenylethanone

Other Names / Synonyms: 1-phenylethanone; 98-86-2; 1-Phenylethanone; Phenyl methyl ketone; Methyl phenyl ketone; Acetylbenzene; Hypnone; Ethanone, 1-phenyl-; Benzoyl methide; 1-phenylethan-1-one

Properties & Characteristics

Appearance: Acetophenone appears as a colorless liquid with a sweet pungent taste and odor resembling the odor of oranges. Freezes under cool conditions. Slightly soluble in water and denser than water. Hence .... Molecular formula: C8H8O. Molecular weight: 120.15 g/mol. Boiling point: 395.1 °F at 760 mmHg (USCG, 1999). Melting point: 67.5 °F (USCG, 1999). Density: 1.028 at 68 °F (USCG, 1999) - Denser than water; will sink. Solubility: In water, 6,130 mg/L at 25 °C. Vapor pressure: 0.39 [mmHg]. LogP: 1.6.

Physical Data

PropertyValue
Melting Point67.5 °F (USCG, 1999)
Boiling Point395.1 °F at 760 mmHg (USCG, 1999)
Density1.028 at 68 °F (USCG, 1999) - Denser than water; will sink
Molecular Weight120.15
SolubilityIn water, 6,130 mg/L at 25 °C
AppearanceAcetophenone appears as a colorless liquid with a sweet pungent taste and odor resembling the odor of oranges. Freezes under cool conditions. Slightly soluble in water and denser than water. Hence ...

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Acetophenone
Formula C8H8O
CAS Number 98-86-2
Molecular Weight 120.15
Synonyms 1-phenylethanone; 98-86-2; 1-Phenylethanone; Phenyl methyl ketone; Methyl phenyl ketone; Acetylbenzene; Hypnone; Ethanone, 1-phenyl-; Benzoyl methide; 1-phenylethan-1-one

Frequently Asked Questions

Acetophenone is a methyl ketone that is acetone in which one of the methyl groups has been replaced by a phenyl group. It has a role as a xenobiotic, a photosensitizing agent and an animal metabolite.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.