3-(Methylthio)propionaldehyde

Product Name:

3-(Methylthio)propionaldehyde

Synonyms:

C4H8SO;3-Methyl propionaldehyde;NSC 15874;3-Methyl Propionaldehyde(FEMA No.2747);3-(Methylthio)propioldehyde;3-(Methylsulfanyl)propanal;3-(methylthio)-1-propanal;3-(methylthio)-propana

CAS:

3268-49-3

MF:

C4H8OS

MW:

104.17

EINECS:

221-882-5

Product Categories:

Pyrazoles;Sulfides flavors;sulfide Flavor

Mol File:

3268-49-3.mol

Melting point 

-68°C

Boiling point 

165-166 °C(lit.)

density 

1.043 g/mL at 25 °C(lit.)

vapor density 

>1 (vs air)

vapor pressure 

760 mm Hg ( 165 °C)

FEMA 

2747 | 3-(METHYLTHIO)PROPIONALDEHYDE

refractive index 

n20/D 1.483(lit.)

Fp 

142 °F

storage temp. 

2-8°C

solubility 

<=75g/l

form 

liquid

explosive limit

1.3-26.1%(V)

Water Solubility 

It is readily soluble in alcohol solvents such as ethanol, propylene and glycol oil. It is insoluble in water.

Sensitive 

Air Sensitive

JECFA Number

466

BRN 

1739289

InChIKey

CLUWOWRTHNNBBU-UHFFFAOYSA-N

CAS DataBase Reference

3268-49-3(CAS DataBase Reference)

NIST Chemistry Reference

Propanal, 3-(methylthio)-(3268-49-3)

EPA Substance Registry System

3-(Methylthio)propanal (3268-49-3)

Hazard Codes 

C,Xn

Risk Statements 

20/22-34-36/37/38-20-52/53-43-41-38-20/21/22

Safety Statements 

26-36/37/39-45-37/39

RIDADR 

UN 2785 6.1/PG 3

WGK Germany 

1

RTECS 

UE2285000

F 

10-13-23

TSCA 

Yes

HazardClass 

6.1(b)

PackingGroup 

III

HS Code 

29309070

Chemical Properties

CLEAR COLOURLESS LIQUID

Chemical Properties

3-(Methylthio) propionaldehyde has a powerful, onion, meat-like odor. It has a pleasant, warm, meat and soup-like flavor at low levels

Uses

3-Methylthiopropionaldehyde is a synthetic flavoring agent that is a colorless to light yellow liquid with an intense meat odor. it polymerizes with age and is stable in a 50% alcohol solution. it should be stored in glass containers. it is used at low concentrations for meat and broth flavors for applications in meats and condiments at 3 ppm and in baked goods and beverages at 0.5 ppm.

Preparation

By transamination and decarboxylation of various amino acids; by oxidation of the alcohol

Raw materials

Acrolein-->Cupric acetate monohydrate -->METHYL MERCAPTAN-->3-Methylthiopropanol