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Merck
CN

A17951

Acetoin

May exist as crystalline dimer

Synonym(s):

3-Hydroxy-2-butanone, Acetylmethylcarbinol

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About This Item

Linear Formula:
CH3COCH(OH)CH3
CAS Number:
513-86-0
Molecular Weight:
88.11
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24890588
EC Number:
208-174-1
Beilstein/REAXYS Number:
385636
MDL number:
MFCD00004521

Key Documents

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Product Name

Acetoin, May exist as crystalline dimer

InChI key

ROWKJAVDOGWPAT-UHFFFAOYSA-N

InChI

1S/C4H8O2/c1-3(5)4(2)6/h3,5H,1-2H3

SMILES string

CC(O)C(C)=O

assay

≥98.0% (GC)

form

crystals

refractive index

n20/D 1.417 (lit.)

bp

148 °C (lit.)

mp

15 °C (monomer)
90 °C (dimer) (lit.)

density

1.013 g/mL at 25 °C (lit.)

food allergen

no known allergens

storage temp.

2-8°C

Quality Level

100

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Related Categories

pictograms

FlameCorrosion
GHS02,GHS05

signalword

Danger

hcodes

H226,H318

Hazard Classifications

Eye Dam. 1 - Flam. Liq. 3

Storage Class

3 - Flammable liquids

wgk

WGK 1

flash_point_f

118.4 °F - closed cup

flash_point_c

48 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
MKCR1853
MKCN0360
MKCM4410
MKCM3039
MKCM1015

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Matthew J Stasiewicz et al.
Applied and environmental microbiology, 77(15), 5294-5306 (2011-06-15)
The organic acids lactate and diacetate are commonly used in combination in ready-to-eat foods because they show synergistic ability to inhibit the growth of Listeria monocytogenes. Full-genome microarrays were used to investigate the synergistic transcriptomic responses of two L. monocytogenes
Zijun Xiao et al.
Critical reviews in microbiology, 33(2), 127-140 (2007-06-15)
Acetoin is an important physiological metabolite excreted by many microorganisms. The excretion of acetoin, which can be diagnosed by the Voges Proskauer test and serves as a microbial classification marker, has its vital physiological meanings to these microbes mainly including
E Y Hirooka et al.
International journal of food microbiology, 7(3), 185-191 (1988-12-01)
Seventy-three staphylococcal strains isolated from pyrodermatitis in dogs were classified as Staphylococcus intermedius (52 strains) or Staphylococcus aureus (21 strains) on the basis of acetoin formation, anaerobic mannitol fermentation, aerobic maltose fermentation, pigmentation, coagulation of human plasma, and reaction on
Jian-An Sun et al.
Bioresource technology, 119, 94-98 (2012-06-26)
Cofactor engineering was employed to enhance production of acetoin by Serratia marcescens H32. 2,3-Butanediol was a major byproduct of acetoin fermentation by S. marcescens H32. In order to decrease 2,3-butanediol formation and achieve a high efficiency of acetoin production, nox
Ranjita Biswas et al.
Applied microbiology and biotechnology, 94(3), 651-658 (2012-03-01)
Production of 2,3-butanediol by Bacillus subtilis takes place in late-log or stationary phase, depending on the expression of bdhA gene encoding acetoin reductase, which converts acetoin to 2,3-butanediol. The present work focuses on the development of a strain of B.
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