- 3,3-Dimethylacrylic acid
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- $0.00 / 25Kg/Bag
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2024-05-17
- CAS:541-47-9
- Min. Order: 1KG
- Purity: 995
- Supply Ability: 5000mt/year
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| | 3,3-Dimethylacrylic acid Basic information |
| | 3,3-Dimethylacrylic acid Chemical Properties |
| 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 | | Fp | 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 | | InChIKey | YYPNJNDODFVZLE-UHFFFAOYSA-N | | LogP | 1.35 | | CAS DataBase Reference | 541-47-9(CAS DataBase Reference) | | NIST Chemistry Reference | 2-Butenoic acid, 3-methyl-(541-47-9) | | EPA Substance Registry System | 2-Butenoic acid, 3-methyl- (541-47-9) |
| | 3,3-Dimethylacrylic acid Usage And Synthesis |
| 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 |
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