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CAS NO.123-73-9
| Crotonaldehyde |
| Product name: | Crotonaldehyde |
| CAS No.: | 123-73-9 |
| EINECS NO: | 204-647-1 |
| Formula: | C4H6O |
| Structure Formula: |
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| M.W.： | 70.09 |
| Characters: |
Colorless, transparent and flammable liquids with asphyxiant irritative odor. It changes into light yellow liquid in the light or air, whose steam is strong lacrimator. Easy soluble in water, with ethanol, ether, benzene, toluene, kerosene and petrol in any mix ratio of each other. |
| Main Uses: |
Used for producting n-butyraldehyde, n-butanol, rubber vulcanization accelerator, alcohol denaturant, and tanning agents, etc.. |
| Crotonaldehyde Basic information |
| Product Name: | Crotonaldehyde |
| Synonyms: | BUTENAL;BETA-METHYLACROLEIN;CROTONALDEHYDE;CROTINALDEHYDE;(E)-2-BUTENAL;2-BUTENAL;2-BUTEN-1-AL;TRANS-2-BUTENAL |
| CAS: | 123-73-9 |
| MF: | C4H6O |
| MW: | 70.09 |
| EINECS: | 204-647-1 |
| Product Categories: | Pharmaceutical Intermediates;Aldehydes;C1 to C6;Carbonyl Compounds;Building Blocks;C1 to C6;Carbonyl Compounds;Chemical Synthesis;Organic Building Blocks |
| Mol File: | 123-73-9.mol |
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| Crotonaldehyde Chemical Properties |
| mp | −76 °C(lit.) |
| bp | 104 °C(lit.) |
| density | 0.853 g/mL at 20 °C(lit.) |
| vapor density | 2.41 (vs air) |
| vapor pressure | 32 mm Hg ( 20 °C) |
| refractive index |
n |
| Fp | 48 °F |
| storage temp. | 2-8°C |
| Water Solubility | 150 g/L (20 ºC) |
| Merck | 14,2596 |
| BRN | 906731 |
| CAS DataBase Reference | 123-73-9(CAS DataBase Reference) |
| NIST Chemistry Reference | Crotonaldehyde(123-73-9) |
| EPA Substance Registry System | 2-Butenal, (2E)-(123-73-9) |
| Safety Information |
| Hazard Codes | F,T+,N |
| Risk Statements | 11-24/25-26-37/38-41-48/22-50-68-R68-R50-R48/22-R41-R37/38-R26-R24/25-R11 |
| Safety Statements | 26-28-36/37/39-45-61-28A-S61-S45-S36/37/39-S28A-S26-16 |
| RIDADR | UN 1143 6.1/PG 1 |
| WGK Germany | 3 |
| RTECS | GP9625000 |
| F | 9-13-23 |
| HazardClass | 6.1 |
| PackingGroup | I |
| Hazardous Substances Data | 123-73-9(Hazardous Substances Data) |
| Crotonaldehyde Usage And Synthesis |
| Chemical Properties | clear liquid |
| General Description | Water-white to straw-colored liquid with a pungent, suffocating odor. Used as a chemical intermediate in a variety of industrial processes (surfactants, textiles, paper, fuels, insecticides, leather tanning, etc.). Used in chemical warfare. |
| Air & Water Reactions | Highly flammable. |
| Reactivity Profile | Crotonaldehyde is an aldehyde. Crotonaldehyde can react violently with strong oxidizing reagents, e.g., reaction with conc. nitric acid leads to instantaneous ignition [Andrussow, L., Chim. Ind. (Paris), 1961, 86, p. 542]. In contact with strong acids or bases Crotonaldehyde will undergo an exothermic condensation reaction. Reaction with 1,3-butadiene is particularly violent [Greenlee, K. W., Chem. Eng. News, 1948, 26, p. 1985]. Crotonaldehyde may rapidly polymerize with ethyl acetoacetate (Soriano, D.S. et al. 1988. Journal of Chemical Education 65:637.). |
| Health Hazard | Although slightly less toxic, crotonaldehyde is similar chemically and toxicologically to acrolein, which is rated as extremely toxic. Toxic concentrations for human inhalation have been reported at 12 mg/m3/10 minutes. Irritant dose to human eye is 45 ppm. As with acrolein, vapor exposures cause severe and painful eye irritation, damage to cornea, lacrimation (tearing), irritation of nasal membranes, pulmonary edema (filling of lungs with fluid) and gastrointestinal distress when ingested. |
| Fire Hazard | Vapors form explosive mixtures in air or in sewers. Hazardous peroxides and acids emitted when heated to decomposition. Avoid nitric acid. Unstable, avoid oxygen, heat, elevated pressures. Hazardous polymerization may occur. Avoid contact with alkaline materials such as caustic ammonia or amines, or at elevated temperatures. |
| Crotonaldehyde Preparation Products And Raw materials |
