2-Methyl-2-pentenoic acid
- Product Name
- 2-Methyl-2-pentenoic acid
- CAS No.
- 3142-72-1
- Chemical Name
- 2-Methyl-2-pentenoic acid
- Synonyms
- trans-2-Methyl-2-pentenoic acid;2-Pentenoic acid, 2-methyl-;STRAWBERRIFF;FEMA 3195;2-hexenoate;Strawberriff Acid;FEMA NUMBER 3195;RARECHEM AL BE 0127;2-methyl-2-pentenoicaci;Methylpentenoicacidpract
- CBNumber
- CB3403220
- Molecular Formula
- C6H10O2
- Formula Weight
- 114.14
- MOL File
- 3142-72-1.mol
2-Methyl-2-pentenoic acid Property
- 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
- Flash point:
- 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
- Major Application
- flavors and fragrances
- Cosmetics Ingredients Functions
- PERFUMING
- InChI
- 1S/C6H10O2/c1-3-4-5(2)6(7)8/h4H,3H2,1-2H3,(H,7,8)/b5-4+
- InChIKey
- JJYWRQLLQAKNAD-SNAWJCMRSA-N
- SMILES
- CC/C=C(C)/C(O)=O
- 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
- 2-Pentenoic acid, 2-methyl- (3142-72-1)
Safety
- 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
- TSCA listed
- HazardClass
- 8
- PackingGroup
- III
- HS Code
- 29161900
- Storage Class
- 8A - Combustible corrosive hazardous materials
- Hazard Classifications
- Eye Dam. 1
Skin Corr. 1B
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H314Causes severe skin burns and eye damage
- Precautionary statements
-
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- W319519
- Product name
- 2-Methyl-2-pentenoic acid
- Purity
- natural (US), 97.0%, FG
- Packaging
- sample-k
- Price
- $59.6
- Updated
- 2023/01/07
- Product number
- M0784
- Product name
- 2-Methyl-2-pentenoic Acid
- Purity
- >98.0%(GC)(T)
- Packaging
- 5g
- Price
- $17
- Updated
- 2025/07/31
- Product number
- M0784
- Product name
- 2-Methyl-2-pentenoic Acid
- Purity
- >98.0%(GC)(T)
- Packaging
- 25g
- Price
- $48
- Updated
- 2025/07/31
- Product number
- JK495241
- Product name
- 2-Methyl-2-pentenoic acid
- Purity
- 98%
- Packaging
- 5g
- Price
- $14
- Updated
- 2021/12/16
- Product number
- 002201
- Product name
- 2-Methyl-2-pentenoic acid
- Purity
- 98%
- Packaging
- 25g
- Price
- $22
- Updated
- 2021/12/16
2-Methyl-2-pentenoic acid Chemical Properties,Usage,Production
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.
Synthesis
99839-14-2
3142-72-1
General procedure for the synthesis of 2-methyl-2-pentenenitrile (CAS: 99839-14-2) as a raw material for the synthesis of 2-methyl-2-pentenoic acid: 220 g of 65% phosphoric acid was added to the reaction flask and the temperature of the reaction system was raised to 100 °C. The temperature of the reaction system was raised to 50 °C. The reaction flask was then charged to the reaction flask. 100 g of 2-methyl-2-pentenenitrile was slowly added dropwise over a period of 5 hours, and the temperature was lowered to 50 °C after completion of the dropwise addition. To the reaction mixture was added 150 g of water followed by extraction with 300 g of toluene in three portions (100 g each). The organic phases were combined and purified by distillation. The solvent was first recovered and then the fractions were collected at 82 °C/3 mmHg to give 110 g of 2-methyl-2-pentenoic acid in 98.5% purity and 92% yield.
References
[1] Patent: CN103539655, 2016, B. Location in patent: Paragraph 0036; 0037
2-Methyl-2-pentenoic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 2-Methyl-2-pentenoic acid manufacturers
- Product
- 2-Methyl-2-pentenoic acid 3142-72-1
- Price
- US $0.00-0.00/kg
- Min. Order
- 25kg
- Purity
- 98%min
- Supply Ability
- 10000kg
- Release date
- 2023-01-14
- Product
- 2-Methyl-2-pentenoic acid 3142-72-1
- Price
- US $100.00/KG
- Min. Order
- 1KG
- Purity
- 99%min
- Supply Ability
- 200TON
- Release date
- 2024-10-31
- Product
- 2-Methyl-2-pentenoic acid 3142-72-1
- Price
- US $45.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 20 tons
- Release date
- 2024-12-09