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
- Molecular Weight:
- 114.14
- MDL Number:
- MFCD08277250
- MOL File:
- 3142-72-1.mol
| Product description | Number | Pack Size | Price |
| 2-Methyl-2-pentenoic acid natural (US), 97.0%, FG | W319519 | sample-k | $59.6 |
| 2-Methyl-2-pentenoic Acid >98.0%(GC)(T) | M0784 | 5g | $17 |
| 2-Methyl-2-pentenoic Acid >98.0%(GC)(T) | M0784 | 25g | $48 |
| 2-METHYL-2-PENTENOIC ACID 95.00% | FFG0002633 | 25G | $1066.07 |
| 2-METHYL-2-PENTENOIC ACID 95.00% | FFG0002633 | 100G | $2422.04 |
| More product size | |||
| 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 |
n |
| Flash point | 226 °F |
| storage temp. | Sealed in dry,Room Temperature |
| pka | 5.00±0.19(Predicted) |
| form | powder to lump |
| 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) |
| Substances Added to Food (formerly EAFUS) | 2-METHYL-2-PENTENOIC ACID |
| FDA UNII | 44I99E898B |
| NIST Chemistry Reference | 2-Pentenoic acid, 2-methyl-(3142-72-1) |
| EPA Substance Registry System | 2-Pentenoic acid, 2-methyl- (3142-72-1) |
| UNSPSC Code | 12164502 |
| NACRES | NA.21 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS05 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H314 | |||||||||
| Precautionary statements | P260-P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338 | |||||||||
| 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 | |||||||||
| Limited Quantities | 5.0 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) | |||||||||
| NFPA 704 |
|
2-Methyl-2-pentenoic acid price More Price(18)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | W319519 | 2-Methyl-2-pentenoic acid natural (US), 97.0%, FG | 3142-72-1 | sample-k | $59.6 | 2023-01-07 | Buy |
| TCI Chemical | M0784 | 2-Methyl-2-pentenoic Acid >98.0%(GC)(T) | 3142-72-1 | 5g | $17 | 2025-07-31 | Buy |
| TCI Chemical | M0784 | 2-Methyl-2-pentenoic Acid >98.0%(GC)(T) | 3142-72-1 | 25g | $48 | 2025-07-31 | Buy |
| American Custom Chemicals Corporation | FFG0002633 | 2-METHYL-2-PENTENOIC ACID 95.00% | 3142-72-1 | 25G | $1066.07 | 2021-12-16 | Buy |
| American Custom Chemicals Corporation | FFG0002633 | 2-METHYL-2-PENTENOIC ACID 95.00% | 3142-72-1 | 100G | $2422.04 | 2021-12-16 | Buy |
2-Methyl-2-pentenoic acid Chemical Properties,Uses,Production
Description
May be prepared by distillation of 2-hydroxy-2-methylvaleric acid (m-form).
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.
Chemical Properties
white semi-transparent crystalline
Chemical Properties
2-Methyl-2-pentenoic acid has a fruity odor.
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).
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-).
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
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| SHANGHAI KEAN TECHNOLOGY CO., LTD. | +8613817748580 | cooperation@kean-chem.com | China | 40066 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615350571055 | Sibel@chuanghaibio.com | China | 8770 | 58 |
| Sichuan Zhuoyu Yantang Technology Co., Ltd. | +8613288715578 | sales@sichuanzyyt.com | China | 12217 | 58 |
| Hebei Chuanghai Biotechnology Co,.LTD | +86-13131129325 | sales1@chuanghaibio.com | China | 5250 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615531151365 | mina@chuanghaibio.com | China | 18126 | 58 |
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20171 | 58 |
| JINING XINHE CHEMICAL CO., LTD | +8615318402391 | sales@xinhepharma.com | China | 809 | 58 |
| Hebei Zhuanglai Chemical Trading Co Ltd | +86-16264648883 | niki@zlchemi.com | China | 7245 | 58 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29850 | 58 |
| Nanjing Dolon Biotechnology Co.,Ltd. | 18905173768 | 52513593@qq.com | CHINA | 2972 | 58 |
View Lastest Price from 2-Methyl-2-pentenoic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-11-14 | 2-Methyl-2-pentenoic acid
3142-72-1
|
US $100.00 / KG | 1KG | 99%min | 200TON | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2025-11-14 | 2-Methyl-2-pentenoic acid
3142-72-1
|
US $0.00-0.00 / kg | 25kg | 98%min | 10000kg | WUHAN FORTUNA CHEMICAL CO., LTD | |
 |
2025-09-25 | 2-Methyl-2-pentenoic acid
3142-72-1
|
US $32.00-1.10 / kg | 1kg | 99% | g-kg-tons, free sample is available | Henan Fengda Chemical Co., Ltd |
-
- 2-Methyl-2-pentenoic acid
3142-72-1
- US $100.00 / KG
- 99%min
- Hebei Chuanghai Biotechnology Co., Ltd
-
- 2-Methyl-2-pentenoic acid
3142-72-1
- US $0.00-0.00 / kg
- 98%min
- WUHAN FORTUNA CHEMICAL CO., LTD
-
- 2-Methyl-2-pentenoic acid
3142-72-1
- US $32.00-1.10 / kg
- 99%
- Henan Fengda Chemical Co., Ltd
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