Crotonaldehyde, predominantly trans
Crotonaldehyde
CAS: 123-73-9
Molecular Formula: C4H6O
Crotonaldehyde, predominantly trans - Names and Identifiers
| Name | Crotonaldehyde |
| Synonyms | (e)-2-butena (E)-2-Butenal Crotonaldehyde trans-2-Butenal trans-But-2-enal β-Methyl acrolein (E)-Crotonaldehyde trans-crotonaldehyde CROTONALDEHYDE STABILIZED CrotonaldehydreForSynthesis ethane-1,2-diyl dipropanoate Crotonaldehyde, predominantly trans |
| CAS | 123-73-9 |
| EINECS | 204-647-1 |
| InChI | InChI=1/C8H14O4/c1-3-7(9)11-5-6-12-8(10)4-2/h3-6H2,1-2H3 |
| InChIKey | MLUCVPSAIODCQM-NSCUHMNNSA-N |
Crotonaldehyde, predominantly trans - Physico-chemical Properties
| Molecular Formula | C4H6O |
| Molar Mass | 70.09 |
| Density | 0.853g/mLat 20°C(lit.) |
| Melting Point | −76°C(lit.) |
| Boling Point | 104°C(lit.) |
| Flash Point | 48°F |
| Water Solubility | 150 g/L (20 ºC) |
| Solubility | water: soluble425.4g/L at 20°C |
| Vapor Presure | 32 mm Hg ( 20 °C) |
| Vapor Density | 2.41 (vs air) |
| Appearance | Liquid |
| Color | Clear |
| Odor | Pungent |
| Exposure Limit | TLV-TWA 6 mg/m3 (2 ppm)(ACGIH); IDLH400 ppm (NIOSH). |
| Merck | 14,2596 |
| BRN | 906731 |
| Storage Condition | 2-8°C |
| Stability | Light Sensitive |
| Explosive Limit | 19.5% |
| Refractive Index | n20/D 1.437 |
| Physical and Chemical Properties | Colorless transparent flammable liquid. Has a asphyxiating irritating odor. In contact with light or air, it becomes a pale yellow liquid, the vapor of which is a very strong lacrimal agent. melting point -69 ℃ boiling point 102.2 ℃ relative density 0.8495 refractive index 1.4384 flash point 13 ℃ soluble in water, can be mixed with ethanol, ether, benzene, toluene, kerosene and gasoline in any ratio. |
| Use | For the preparation of N-butyraldehyde, n-butanol, rubber vulcanization accelerator, alcohol denaturant and tanning agent |
Crotonaldehyde, predominantly trans - Risk and Safety
| Risk Codes | R11 - Highly Flammable R24/25 - R26 - Very Toxic by inhalation R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes R48/22 - Harmful danger of serious damage to health by prolonged exposure if swallowed. R50 - Very Toxic to aquatic organisms R68 - Possible risk of irreversible effects |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 - After contact with skin, wash immediately with plenty of soap-suds. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S28A - S16 - Keep away from sources of ignition. |
| UN IDs | UN 1143 6.1/PG 1 |
| WGK Germany | 3 |
| RTECS | GP9625000 |
| FLUKA BRAND F CODES | 9-13-23 |
| HS Code | 29121990 |
| Hazard Class | 6.1 |
| Packing Group | I |
Crotonaldehyde, predominantly trans - Upstream Downstream Industry
| Downstream Products | 2,4-Hexadienoic acid |
Crotonaldehyde, predominantly trans - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | used in the preparation of n-butyl aldehyde, n-butyl alcohol, rubber vulcanization accelerator, alcohol denaturant and tanning agent, for the preparation of butyraldehyde, butanol, 2-ethylhexanol, sorbic acid, 3-methoxybutyraldehyde, 3-methoxybutanol, crotonic acid, quinaldine, maleic anhydride and pyridine products. In addition, an epoxy resin raw material and an epoxy plasticizer can be obtained by reacting butenal with butadiene. The heat-resistant resin raw material can be obtained by reacting with quaternary pentane tetraol. Butenal can also be used to prepare foaming agents, dyes and rubber antioxidants, pesticides and military chemicals for mineral processing. Technical grade crotonaldehyde is actually a mixture of trans-and cis-isomers [4170-30-3]. However, the cis isomer is unstable, and the content is less than 1%. used as standard substance for chromatographic analysis, rubber accelerator, antioxidant and insecticide, also used in organic synthesis |
| production method | the liquid phase condensation of acetaldehyde under the catalysis of alkali or anion exchange resin to produce butanol aldehyde, the butanol aldehyde is obtained by heating, condensation and dehydration in dilute acid. Each ton of crotonaldehyde consumed acetaldehyde 1405kg, sodium hydroxide 4.7, 4kg of acid. |
| spontaneous combustion temperature | 320 ° F. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:11:58
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