Acetoin

CAS 513-86-0CH3COCH(OH)CH3Chemical Synthesis

Acetoin (CAS 513-86-0), also known as 3-Hydroxy-2-butanone, is a flavour compound with the linear formula CH3COCH(OH)CH3 and a molecular weight of 88.11 g/mol. This alpha-hydroxy ketone is found naturally in various foods and beverages, contributing to their characteristic aromas. Acetoin is primarily utilised in the flavour and fragrance industries and serves as a valuable building block in chemical synthesis.

IUPAC: 3-Hydroxy-2-butanone,Acetylmethylcarbinol
Synonyms: 3-Hydroxy-2-butanoneAcetylmethylcarbinol

Email us

Acetoin (CH3COCH(OH)CH3) — chemical structure, CAS 513-86-0; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksC3 to C6Carbonyl CompoundsCell BiologyChemical SynthesisKetonesNutrition ResearchOrganic Building Blocks

01 /Applications

Flavour and Fragrance Industry

Acetoin is a key component in creating buttery and creamy flavour profiles for food products. It is also used in fragrance formulations to impart warm and sweet notes.

Chemical Synthesis

As an organic building block, acetoin is employed in the synthesis of more complex organic molecules. Its reactive hydroxyl and ketone groups allow for diverse chemical transformations.

Research and Development

This compound is utilised in cell biology and nutrition research, particularly in studies related to microbial metabolism and phytochemical analysis.

02 /Properties

Molecular weight	88.11
Linear formula	CH3COCH(OH)CH3
Boiling point	148 °C(lit.)
Density	1.013 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.417(lit.)
Storage temperature	2-8°C
Melting point	15 °C (monomer)90 °C (dimer)(lit.)

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H226Flammable liquid and vapour
H315Causes skin irritation
H319Causes serious eye irritation

Precautionary statements

P305IF IN EYES

Protective equipment	dust mask type N95 (US), Eyeshields, Gloves
Flash point	47 °C / 116.6 °F
Transport (UN / ADR)	UN 2621 3 / PGIII90 °C (dimer)(lit.)
Water hazard class (WGK, DE)	1
Hazard codes (EU)	Xi
Risk statements (R)	10-36/38
Safety statements (S)	26-36

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

513-86-0

MDL number

MFCD00004521

PubChem substance

24890588

Beilstein registry

385636

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Acetoin primarily used for?

Acetoin is mainly used in the flavour and fragrance industry for its characteristic buttery notes and as a building block in chemical synthesis.

What is the CAS number and chemical formula for Acetoin?

The CAS number for Acetoin is 513-86-0 and its linear formula is CH3COCH(OH)CH3.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Acetoin. The specific grade and purity are available upon request. We do not represent this product as USP, BP, EP, or pharmacopoeia grade.

How is Acetoin classified in terms of safety?

Acetoin is classified with GHS symbols GHS02 and GHS07, carrying a Warning signal word. It has hazard statements H226 (Flammable liquid and vapour) and H315-H319 (Causes skin and serious eye irritation). Appropriate personal protective equipment including dust mask type N95, eyeshields, and gloves should be used when handling.