4-Mercapto-4-methylpentan-2-one Chemical Properties

Boiling point:

174℃

Density 

0.961

FEMA 

3997 | 4-MERCAPTO-4-METHYL-2-PENTANONE

refractive index 

1.4620

Flash point:

54 °C

storage temp. 

Inert atmosphere,Room Temperature

solubility 

Chloroform (Soluble), Methanol (Slightly)

form 

clear liquid

pka

10.32±0.25(Predicted)

color 

Colorless to Light yellow

Odor

at 0.10 % in propylene glycol. sulfurous meaty catty black currant

Odor Type

sulfurous

Water Solubility 

Soluble in water.

Sensitive 

Air Sensitive

JECFA Number

1293

Stability:

Hygroscopic

LogP

1.23

CAS DataBase Reference

19872-52-7(CAS DataBase Reference)

NIST Chemistry Reference

2-Pentanone, 4-mercapto-4-methyl-(19872-52-7)

EPA Substance Registry System

2-Pentanone, 4-mercapto-4-methyl- (19872-52-7)

Safety Information

Risk Statements 

10-36/37/38

Safety Statements 

26

TSCA 

Yes

HS Code 

2930.90.9250

HazardClass 

3

4-Mercapto-4-methylpentan-2-one Usage And Synthesis

Chemical Properties

4-Mercapto-4-methyl-2-pentanone is repellent when neat or in high concentrations. It has a meaty, black currant-like odor. It is used to create the “catty note” (cat-like) of black currant.

Occurrence

Reportedly present in sauvignon grapes, cabernet sauvignon wine, beer, green tea and grapefruit juice.

Uses

4-Mercapto-4-methyl-2-pentanone is one of the most strongly contributing odorants in the volatile fraction of a Japanese green tea (sen-cha) infusion, and on the basis of the results of an aroma extract dilution analysis. 4-mercapto-4-methyl-2-pentanone in the grapefruit/sulfury group was found in reconstituted concentrate after thermal concentration.

Definition

ChEBI: An alkylthiol that is 4-methylpentan-2-one substituted at position 4 by a mercapto group.

Aroma threshold values

Odor threshold in water, 0.0001 to 0.005 ppb (for 2-mercapto-2-methyl-4-pentanone).

4-Mercapto-4-methylpentan-2-one(19872-52-7)Related Product Information

• METSULFURON METHYL
• 3-Mercaptopropionic acid
• Thiophanate-methyl
• 4-Methyl-2-pentanone
• Mesotrione
• Methyl acrylate
• Calcium thioglycolate
• Mercaptoacetic acid
• Bensulfuron methyl
• Mesityl oxide
• 2-Ethylhexyl mercaptoacetate
• Methyl acetate
• Kresoxim-methyl
• Methylparaben
• 3-Mercapto-2-pentanone
• Methyl cyclopentenolone
• Methyl
• 2-Mercaptoethanol