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ChemicalBook--->CAS DataBase List--->3142-72-1

3142-72-1

3142-72-1 Structure

3142-72-1 Structure
IdentificationMore
[Name]

2-Methyl-2-pentenoic acid
[CAS]

3142-72-1
[Synonyms]

2-METHYL-2-PENTENOIC ACID
FEMA 3195
FEMA NUMBER 3195
RARECHEM AL BE 0127
STRAWBERRIFF
TRANS-2-METHYL-2-PENTENOIC ACID
2-methyl-2-pentenoicaci
2-methyl-pent-2-enoicacid
2-Pentene-2-carboxylicacid
3-Ethyl-2-methylacrylicacid
Methylpentenoicacidpract
2-methylpent-2-en-1-oic acid
2-Methyl-2-pentenoic acid, pract., 85%
2-Pentenoic acid, 2-methyl-
trans-2-Methyl-2-pentenoic acid
2-Methyl-2-pentenoic acid/Strawberriff acid
[EINECS(EC#)]

241-026-4
[Molecular Formula]

C6H10O2
[MDL Number]

MFCD00002655
[Molecular Weight]

114.14
[MOL File]

3142-72-1.mol
Chemical PropertiesBack Directory
[Appearance]

white semi-transparent crystalline
[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)
[FEMA ]

3195 | 2-METHYL-2-PENTENOIC ACID
[refractive index ]

n20/D 1.46(lit.)
[Fp ]

226 °F
[storage temp. ]

Sealed in dry,Room Temperature
[form ]

powder to lump
[pka]

5.00±0.19(Predicted)
[color ]

White to Almost white
[Odor]

at 10.00 % in dipropylene glycol. dry acid sweaty strawberry woody fruity jam
[Odor Type]

acidic
[FreezingPoint ]

20.0 to 25.0 ℃
[JECFA Number]

1210
[InChIKey]

JJYWRQLLQAKNAD-SNAWJCMRSA-N
[LogP]

1.89
[CAS DataBase Reference]

3142-72-1(CAS DataBase Reference)
[NIST Chemistry Reference]

2-Pentenoic acid, 2-methyl-(3142-72-1)
[EPA Substance Registry System]

3142-72-1(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

C
[Risk Statements ]

R34:Causes burns.
R22:Harmful if swallowed.
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
[RIDADR ]

UN 3261 8/PG 3
[WGK Germany ]

2
[TSCA ]

Yes
[HazardClass ]

8
[PackingGroup ]

III
[HS Code ]

29161900
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Propionaldehyde-->Silver nitrate
Hazard InformationBack Directory
[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.
[Definition]

ChEBI: 2-Methyl-2-pentenoic acid is a methyl-branched fatty acid. It is a conjugate acid of a 2-methyl-(2E)-pentenoate(1-).
[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.
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

2-Methyl-2-pentenoic acid, 99%(3142-72-1)
[Alfa Aesar]

2-Methyl-2-pentenoic acid, 99%(3142-72-1)
[Sigma Aldrich]

3142-72-1(sigmaaldrich)
[TCI AMERICA]

2-Methyl-2-pentenoic Acid,>98.0%(GC)(3142-72-1)
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