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| IUPAC name : | (E)-but-2-enal |
| InChI : | InChI=1/C4H6O/c1-2-3-4-5/h2-4H,1H3/b3-2+ |
| InChIKey : | MLUCVPSAIODCQM-NSCUHMNNBQ |
| SMILES : | C/C=C/C=O |
| cas number : | 123-73-9 |
| (EINECS) number : | 204-647-1 |
| eu annex : | 605-009-00-9 |
| coe number : | 11736 |
| fl. number : | 05.135 |
| molar refractivity : | 20.82 ± 0.3 cm3 |
| parachor : | 187.3 ± 4.0 cm3 |
| index of refraction : | 1.402 ± 0.02 |
| surface tension : | 23.0 ± 3.0 dyne/cm |
| density : | 0.819 ± 0.06 g/cm3 |
| polarizability : | 8.25 ± 0.5 10-24cm3 |
| XlogP : | 0.80 |
| XlogP3-AA : | 0.50 |
| molecular weight : | 70.0898400 (IUPAC) |
| formula : | C4 H6 O |
| BioActivity Analysis : | 48413490 |
| NMR Predictor : | Predict |
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| export tariff code : | 2912.19.5000 |
| fda reg : | unspecified |
Suppliers :
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| Nanjing : | crotonaldehyde
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organoleptics :
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properties :
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| appearence : | colorless to pale yellow clear liquid |
| assay : | 98.00 to 100.00 %
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| Food Chemicals Codex Listed : | No |
| specific gravity : | 0.84600 @ 25.00 °C.
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| refractive index : | 1.43650 @ 20.00 °C.
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| melting point : | -101.00 to -98.00 °C. @ 760.00 mm Hg
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| boiling point : | 101.00 to 102.00 °C. @ 760.00 mm Hg
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| vapor pressure : | 30.00000 mm/Hg @ 25.00 °C. |
| vapor density : | 2.41 ( Air = 1 ) |
| flash point : | 48.00 °F. TCC ( 8.89 °C. )
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| logP (o/w) : | 0.60 |
safety :
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| most important hazard(s) : | T+ N - Very toxic, Dangerous for the environment. |
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R 11 - Highly flammable. R 23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R 37/38 - Irritating to respiratory system and skin. R 41 - Risk of serious damage to eyes. R 48/22 - Harmful: danger of serious damage to health by prolonged exposure if swallowed. R 50 - Very toxic to aquatic organisms. R 68 - Possible risk of irreversible effects. S 02 - Keep out of the reach of children. S 09 - Keep container in a well-ventilated place. S 16 - Keep away from sources of ignition - No Smoking. S 20/21 - When using do not eat, drink or smoke. S 23 - Do not breath vapour. S 28 - After contact with skin, wash immediately with plenty of water. S 36/37/39 - Wear suitable clothing, gloves and eye/face protection. S 45 - In case of accident or if you feel unwell seek medical advice immediately. S 61 - Avoid release to the environment. Refer to special instructions/safety data sheet.
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| Oral Toxicity(LD50) : |
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Oral-Mouse 240.00 mg/kg Biochemical Journal. Vol. 34, Pg. 1196, 1940.
Intraperitoneal-Mouse 160.00 mg/kg from H. Zollner, Institut fur Biochemie, Der Universitat, Gras, Oct. 23, 1975Vol. 23OCT1975
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| Dermal Toxicity(LD50) : |
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Skin-Rabbit 380.00 mg/kg Union Carbide Data Sheet. Vol. 4/21/1967
Subcutaneous-Rat 140.00 mg/kg Acta Pharmacologica et Toxicologica. Vol. 6, Pg. 299, 1950.
Subcutaneous-Mouse 160.00 mg/kg Acta Pharmacologica et Toxicologica. Vol. 6, Pg. 299, 1950.
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| Inhalation Toxicity(LC50) : |
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Inhalation-Rat 4000.00 mg/m3/30M Acta Pharmacologica et Toxicologica. Vol. 6, Pg. 299, 1950.
Inhalation-Mouse 1510.00 mg/m3/2H
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safety in use :
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| recommendation for (E)-2-buten-1-al usage levels up to : |
| | not for fragrance use.
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| recommendation for (E)-2-buten-1-al usage levels up to : |
| | not for flavor use.
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safety references :
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| EPI System : | view |
| EPA-Iris : | IRIS |
| NLM Hazardous Substances Data Bank : | search |
| Chemical Carcinogenesis Research Information System : | Search |
| Carcinogenic Potency Database : | Search |
| Env. Mutagen Info. Center : | Search |
| Canada Domestic Sub. List : | Yes |
| EPA Chem. Sub. Inventory : | Yes |
| WISER : | UN 1143 |
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| WGK Germany : | 3 |
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| | (E)-but-2-enal
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| (EINECS) number : | 204-647-1 |
| RTECS : | GP9625000 for 123-73-9 |
| chemidplus : | 000123739 |
| EPA/NOAA CAMEO : | hazardous materials |
| EPA Substance Registry Services : | 123-73-9 |
references :
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| | (E)-but-2-enal
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| fl. number : | 05.135 |
| NIST Chemistry WebBook : | 3610514447 |
| pubchem : | 197296 |
other :
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| VCF-Online: | VCF Volatile Compounds in Food |