3,3-Dimethylacrylic acid
- CAS No.
- 541-47-9
- Chemical Name:
- 3,3-Dimethylacrylic acid
- Synonyms
- 3-METHYLBUT-2-ENOIC ACID;SENECIOIC ACID;3-METHYL-2-BUTENOIC ACID;SENECIC ACID;3-METHYLCROTONIC ACID;FEMA 3187;3-Methylbutenoic acid;AURORA 22781;Seneciosαure;(CH3)2C=CHCOOH
- CBNumber:
- CB6273219
- Molecular Formula:
- C5H8O2
- Molecular Weight:
- 100.12
- MDL Number:
- MFCD00004366
- MOL File:
- 541-47-9.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 65-70 °C (lit.) |
|---|---|
| Boiling point | 194-195 °C (lit.) |
| Density | 0,969 g/cm3 |
| refractive index | 1.4226 (estimate) |
| FEMA | 3187 | 3-METHYLCROTONIC ACID |
| FLAVIS Number | 08.070 | 3-Methylcrotonic acid |
| Flash point | 93°C |
| storage temp. | Keep in dark place,Sealed in dry,Room Temperature |
| solubility | Chloroform (Slightly), Methanol (Slightly) |
| form | Solid |
| pka | pK1:5.12 (25°C) |
| color | Off-White to Pale Orange |
| Odor | at 1.00 % in propylene glycol. green phenolic dairy |
| Odor Type | phenolic |
| Water Solubility | Soluble in water, and methanol. |
| JECFA Number | 1204 |
| BRN | 1720305 |
| InChI | 1S/C5H8O2/c1-4(2)3-5(6)7/h3H,1-2H3,(H,6,7) |
| InChIKey | YYPNJNDODFVZLE-UHFFFAOYSA-N |
| SMILES | C\C(C)=C\C(O)=O |
| LogP | 1.35 |
| Substances Added to Food (formerly EAFUS) | 3-METHYLCROTONIC ACID |
| CAS DataBase Reference | 541-47-9(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | EKV8I38F9I |
| NIST Chemistry Reference | 2-Butenoic acid, 3-methyl-(541-47-9) |
| EPA Substance Registry System | 2-Butenoic acid, 3-methyl- (541-47-9) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS05,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H315-H318-H335 | |||||||||
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 | |||||||||
| target organs | Respiratory system | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi,C | |||||||||
| Risk Statements | 37/38-41-34 | |||||||||
| Safety Statements | 26-36/37/39-45-27 | |||||||||
| RIDADR | UN3261 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | GQ5425000 | |||||||||
| F | 21 | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | 8 | |||||||||
| HS Code | 29161900 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Eye Dam. 1 Skin Irrit. 2 STOT SE 3 |
|||||||||
| REACH Registrations | Active | |||||||||
| Limited Quantities | 5.0 kg (11 lbs) (solid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) | |||||||||
| NFPA 704 |
|
3,3-Dimethylacrylic acid price More Price(50)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | D138606 | 3,3-Dimethylacrylic acid 97% | 541-47-9 | 100g | $100 | 2026-04-30 | Buy |
| Sigma-Aldrich | D138606 | 3,3-Dimethylacrylic acid 97% | 541-47-9 | 500g | $176 | 2026-04-30 | Buy |
| TCI Chemical | M0543 | 3-Methylcrotonic Acid >98.0%(GC)(T) | 541-47-9 | 25g | $17 | 2026-04-30 | Buy |
| TCI Chemical | M0543 | 3-Methylcrotonic Acid >98.0%(GC)(T) | 541-47-9 | 100g | $43 | 2026-04-30 | Buy |
| TRC | TRC-M294930-5G | 3-Methylcrotonic Acid | 541-47-9 | 5g | $101 | 2026-06-03 | Buy |
3,3-Dimethylacrylic acid Chemical Properties, Uses, Production
Description
May be prepared by the action of alkalis or bases on the ester of α-bromoisovaleric acid; by condensation of acetone with malonic acid or bromoacetic ester; by oxidation of mesityl oxide with sodium hypochlorite.
Chemical Properties
3-Methylcrotonic acid has green, phenolic, dairy aroma
Chemical Properties
White to brown crystal
Occurrence
Reported found in the rhizomes of Senecio kaempferi Seib.; the corresponding ester occurs naturally in waste wort. Also reported found in raspberries, wheat bread, cocoa, coffee, black tea, Arctic bramble, and green and roasted maté.
Uses
Chemical Intermediates.
Definition
ChEBI: A methyl-branched fatty acid that is but-2-enoic acid bearing a methyl substituent at position 3.
Preparation
By the action of alkalis or bases on the ester of α-bromoisovaleric acid; by condensation of acetone with malonic acid or bromoacetic ester; by oxidation of mesityl oxide with sodium hypochlorite.
Synthesis Reference(s)
Journal of the American Chemical Society, 71, p. 3214, 1949 DOI: 10.1021/ja01177a079
Organic Syntheses, Coll. Vol. 3, p. 302, 1955
Tetrahedron Letters, 36, p. 2469, 1995 DOI: 10.1016/0040-4039(95)00285-K
Purification Methods
Crystallise the acid from hot water or pet ether (b 60-80o). [Beilstein 2 IV 1555.]
3,3-Dimethylacrylic acid Preparation Products And Raw materials
Raw materials
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Preparation Products
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| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Liye Chemical Products Co., Ltd | 0310-6697998 13930001710 | losartan@crotonic-anhydride.com | China | 92 | 58 |
| Shanghai kadel chemical technology co., LTD | 021-4007787-550 400-7787-550 | 2850202386@qq.com | China | 10569 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Beijing Donghualituo Techonlogy Development Co.,Ltd. | 010-88425576 | sales@dhltchem.com | China | 793 | 59 |
| INTATRADE GmbH | +49 3493/605464 | sales@intatrade.de | Germany | 3563 | 66 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9407 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
View Latest Price from 3,3-Dimethylacrylic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-19 | 3,3-Dimethylacrylic acid
541-47-9
|
0.99 | RongNa Biotechnology Co.,Ltd | ||||
 |
2026-09-18 | 3,3-Dimethylacrylic acid
541-47-9
|
1KG | 995 | 5000mt/year | Jinan Finer Chemical Co., Ltd | ||
 |
2026-07-23 | 3-Methylbut-2-enoic acid
541-47-9
|
99.94% | 10g | TargetMol Chemicals Inc. |
-
- 3,3-Dimethylacrylic acid
541-47-9
- 0.99
- RongNa Biotechnology Co.,Ltd
-
- 3,3-Dimethylacrylic acid
541-47-9
- $0.00
- 995
- Jinan Finer Chemical Co., Ltd
-
- 3-Methylbut-2-enoic acid
541-47-9
- $0.00
- 99.94%
- TargetMol Chemicals Inc.
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