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| IUPAC name : | 3-methylbut-2-enoic acid |
| InChI : | InChI=1/C5H8O2/c1-4(2)3-5(6)7/h3H,1-2H3,(H,6,7) |
| InChIKey : | YYPNJNDODFVZLE-UHFFFAOYAX |
| SMILES : | CC(=CC(=O)O)C |
| cas number : | 541-47-9 |
| (EINECS) number : | 208-782-7 |
| beilstein number : | 1720305 |
| fema number : | 3187 |
| coe number : | 10138 |
| jecfa number : | 1204 |
| fl. number : | 08.070 |
| molar refractivity : | 26.67 ± 0.3 cm3 |
| parachor : | 236.2 ± 4.0 cm3 |
| index of refraction : | 1.450 ± 0.02 |
| surface tension : | 32.2 ± 3.0 dyne/cm |
| density : | 1.010 ± 0.06 g/cm3 |
| polarizability : | 10.57 ± 0.5 10-24cm3 |
| XlogP : | 0.80 |
| molecular weight : | 100.1158200 |
| formula : | C5 H8 O2 |
| BioActivity Analysis : | 69178 |
| NMR Predictor : | Predict |
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| export tariff code : | unspecified |
| fda reg : | unspecified |
Suppliers :
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| Penta : | 3-methyl crotonic acid
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| Sigma-Aldrich-SAFC : | 3-Methylcrotonic acid
≥97% Odor: alcohol; green |
organoleptics :
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| odor type : | phenolic |
| odor strength : | medium , recommend smelling in a 1.00 % solution or less |
odor description : at 1.00 % in propylene glycol. | green phenolic dairy |
properties :
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| appearence : | white to tan crystals |
| assay : | 97.00 to 100.00 %
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| Food Chemicals Codex Listed : | No |
| melting point : | 66.00 to 70.00 °C. @ 760.00 mm Hg
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| boiling point : | 195.00 to 197.00 °C. @ 760.00 mm Hg
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| boiling point : | 114.00 °C. @ 40.00 mm Hg
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| flash point : | > 212.00 °F. TCC ( > 100.00 °C. )
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| logP (o/w) : | 1.40 |
safety :
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| most important hazard(s) : | Xi - Irritant |
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R 34 - Causes burns. S 02 - Keep out of the reach of children. S 22 - Do not breath dust. S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S 27 - Take off immediately all contaminated clothing. S 36/37/39 - Wear suitable clothing, gloves and eye/face protection.
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| Oral Toxicity(LD50) : |
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Oral-Rat 3560.00 mg/kg
Oral-Guineapig 3000.00 mg/kg
Oral-Mouse 2580.00 mg/kg
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| Dermal Toxicity(LD50) : |
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Skin-Rabbit >3200.00 gm/kg
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| Inhalation Toxicity(LC50) : |
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Not determined
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safety in use :
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| recommendation for 3-methyl crotonic acid usage levels up to : |
| | not for fragrance use.
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safety references :
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| EPI System : | view |
| Canada Domestic Sub. List : | Yes |
| EPA Chem. Sub. Inventory : | Yes |
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| WGK Germany : | 1 |
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| | 3-methylbut-2-enoic acid
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| (EINECS) number : | 208-782-7 |
| RTECS : | GQ5425000 for 541-47-9 |
| chemidplus : | 000541479 |
| EPA Substance Registry Services : | 541-47-9 |
references :
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| | 3-methylbut-2-enoic acid
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| fl. number : | 08.070 |
| jecfa number : | 1204 |
| NIST Chemistry WebBook : | 1921528580 |
| pubchem : | 154231 |
other :
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| VCF-Online: | VCF Volatile Compounds in Food |