2-Acetyl Pyrrole

Melting point 

88-93 °C(lit.)

Boiling point 

220 °C(lit.)

density 

1.1143 (rough estimate)

FEMA 

3202 | METHYL 2-PYRROLYL KETONE

refractive index 

1.5040 (estimate)

Fp 

220°C

storage temp. 

Store below +30°C.

pka

14.86±0.50(Predicted)

form 

Crystalline Powder

color 

White to beige

Odor

roasted odor

JECFA Number

1307

BRN 

1882

CAS DataBase Reference

1072-83-9(CAS DataBase Reference)

NIST Chemistry Reference

Ethanone, 1-(1H-pyrrol-2-yl)-(1072-83-9)

EPA Substance Registry System

2-Acetylpyrrole (1072-83-9)

Hazard Codes 

Xn,Xi

Risk Statements 

22-37/38-36/37/38

Safety Statements 

37/39-26-24/25-36

WGK Germany 

3

RTECS 

OB5970000

Hazard Note 

Harmful

TSCA 

Yes

HS Code 

29339990

Description

2-acetyl pyrrole is a colorless or yellow liquid. It occurs naturally in cereals and cereal product and has an odor reminiscent of walnut, licorice, baked bread, baked hazelnut, and fish. It is used as a food additive, such as in cocoa, rum, brandy, caramel.

Description

Methyl 2-pyrrolyl ketone is like bread, walnut, licorice. May be prepared from pyrryl magnesium iodide and acetyl chloride; a volatile flavor component in roasted filberts.

Chemical Properties

Methyl-2-pyrrolyl ketone has an odor reminiscent of bread, walnut and licorice

Chemical Properties

white to beige crystalline powder

Uses

hepatoprotectant, organoleptic

Definition

ChEBI: A pyrrole carrying an acetyl substituent at the 2-position.

Preparation

From pyrrole magnesium iodide and acetyl chloride; a volatile flavor component in roasted filberts

Preparation Products

4-METHYL-2-(1H-PYRROL-2-YL)QUINOLINE

Raw materials

Acetic anhydride-->Sodium acetate-->Zinc chloride-->Sodium acetate trihydrate-->N,N-Dimethylacetamide-->Pyrrole