Product

2-Methyl-2-pentenoic acid

CAS No.：3142-72-1

Other grades of this product :

2-Methyl-2-pentenoic acid Basic information

Product Name:	2-Methyl-2-pentenoic acid
Synonyms:	FEMA NUMBER 3195;FEMA 3195;2-hexenoate;2-Methyl-2-pentenoic acid,99%;Strawberriff Acid;Natural 2-methyl-2-pentenoic acid;2-METHYL-2-PENTENOIC ACID;STRAWBERRIFF
CAS:	3142-72-1
MF:	C6H10O2
MW:	114.14
EINECS:	221-552-0
Product Categories:	Acids and Esters
Mol File:	3142-72-1.mol

2-Methyl-2-pentenoic acid Chemical Properties

Melting point	26-28 °C(lit.)
Boiling point	123-125 °C30 mm Hg(lit.)
density	0.979 g/mL at 25 °C
vapor density	>1 (vs air)
refractive index	n20/D 1.46(lit.)
FEMA	3195 \| 2-METHYL-2-PENTENOIC ACID
Fp	226 °F
storage temp.	Sealed in dry,Room Temperature
pka	5.00±0.19(Predicted)
form	powder to lump
color	White to Almost white
FreezingPoint	20.0 to 25.0 ℃
JECFA Number	1210
InChIKey	JJYWRQLLQAKNAD-SNAWJCMRSA-N
CAS DataBase Reference	3142-72-1(CAS DataBase Reference)
NIST Chemistry Reference	2-Pentenoic acid, 2-methyl-(3142-72-1)
EPA Substance Registry System	2-Pentenoic acid, 2-methyl- (3142-72-1)

Safety Information

Hazard Codes	C
Risk Statements	34-22-41
Safety Statements	26-36/37/39-45
RIDADR	UN 3261 8/PG 3
WGK Germany	2
TSCA	Yes
HazardClass	8
PackingGroup	III
HS Code	29161900

MSDS Information

Provider	Language
ACROS	English
SigmaAldrich	English
ALFA	English

2-Methyl-2-pentenoic acid Usage And Synthesis

Description	May be prepared by distillation of 2-hydroxy-2-methylvaleric acid (m-form).
Chemical Properties	2-Methyl-2-pentenoic acid has a fruity odor.
Chemical Properties	white semi-transparent crystalline
Chemical Properties	With a dry acid note, 2-Methyl-2-pentenoic Acid is found in the odor of strawberries.The acid can be prepared from the corresponding saturated one by α-bromination followed by dehydrobromination. It is used in fragrances to enhance fruity notes and in strawberry flavors.
Occurrence	Reported found in strawberry
Uses	2-Methyl-2-pentenoic Acid (CAS# 3142-72-1) can be used for cleansing and refreshing hair and scalp. It can also be used to store and cure food products, and for providing a long-lasting strawberry odor.
Preparation	By distillation of 2-hydroxy-2-methylvaleric acid (cis-form).
Taste threshold values	Taste characteristics at 50 ppm: sour, acidic, sweaty, berry and fruit-like.

2-Methyl-2-pentenoic acid Preparation Products And Raw materials

Raw materials

Propionaldehyde-->Silver nitrate

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