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| IUPAC name : | but-2-enoic acid |
| InChI : | InChI=1/C4H6O2/c1-2-3-4(5)6/h2-3H,1H3,(H,5,6) |
| InChIKey : | LDHQCZJRKDOVOX-NSCUHMNNBH |
| SMILES : | CC=CC(=O)O |
| (EINECS) number : | 223-077-4 |
| cas number : | 3724-65-0 |
| beilstein number : | 1098434 |
| fema number : | 3908 |
| coe number : | 10080 |
| fl. number : | 08.072 |
| molar refractivity : | 22.20 ± 0.3 cm3 |
| parachor : | 200.2 ± 4.0 cm3 |
| index of refraction : | 1.448 ± 0.02 |
| surface tension : | 34.2 ± 3.0 dyne/cm |
| density : | 1.039 ± 0.06 g/cm3 |
| polarizability : | 8.80 ± 0.5 10-24cm3 |
| xlogp : | 0.70 |
| molecular weight : | 86.0892400 |
| formula : | C4 H6 O2 |
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| fda reg : | unspecified |
h. number : | unspecified |
| organoleptics : | |
| odor type : | burnt |
| odor strength : | high ,
recommend smelling in a 0.10 % solution or less |
odor description :
at 0.10 % in propylene glycol. | roasted burnt |
| properties : | |
| appearence : | white solid |
| assay : | 99.00 - 100.00 % sum of isomers
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| Food Chemicals Codex Listed : | No |
| melting point : | 71.00 - 73.00 °C. @ 760.00 mm Hg
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| boiling point : | 184.00 - 185.00 °C. @ 760.00 mm Hg
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| boiling point : | 66.00 - 67.00 °C. @ 10.00 mm Hg
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| logp : | 0.72 |
| safety : | |
| most important hazard(s) : |
Xn - Harmful. |
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| Oral Toxicity(LD50) : |
Oral-Rat 1.00 gm/kg
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| Dermal Toxicity(LD50) : |
Skin-Rabbit 600.00 gm/kg
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| flash point ( Deg. F. ) : | 186.00 °F. TCC ( 85.56 °C. )
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| recommendation for 2-butenoic acid usage levels up to : |
| | not for fragrance use.
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| safety links : | |
| (EINECS) number : | 223-077-4 |
| rtecs : | GQ2800000 for 3724-65-0 |
| chemidplus : | 3724-65-0 |
| epa-srs : | 3724-65-0 |
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| other : | |
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| references : | |
| fl. number : | 08.072 |
| pubchem : | 10520625 |
| NIST Chemistry WebBook : | 3016727019 |
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