3-chloro-2-butanon
3-Chloro-2-butanone
CAS: 4091-39-8
Molecular Formula: C4H7ClO
3-chloro-2-butanon - Names and Identifiers
| Name | 3-Chloro-2-butanone |
| Synonyms | 3-CL-MEK Chlorobutanone 3-CHLOROBUTANONE 3-chloro-2-butanon 3-CHLORO-2-BUTANONE 3-Chloro-2-butanone 2-CHLORO-3-BUTANONE 3-chlorobutan-2-one 1-ACETYL-1-CHLOROETHANE (3S)-3-chlorobutan-2-one (3R)-3-chlorobutan-2-one 1-CHLOROETHYL METHYL KETONE 3-Chloro-2-oxobutane~Methyl alpha-chloroethyl ketone |
| CAS | 4091-39-8 |
| EINECS | 223-834-9 |
| InChI | InChI=1/C4H7ClO/c1-3(5)4(2)6/h3H,1-2H3/t3-/m0/s1 |
3-chloro-2-butanon - Physico-chemical Properties
| Molecular Formula | C4H7ClO |
| Molar Mass | 106.55 |
| Density | 1.055 g/mL at 25 °C (lit.) |
| Boling Point | 114-117 °C (lit.) |
| Flash Point | 70°F |
| Water Solubility | 3 g/100 mL |
| Solubility | 30g/l |
| Vapor Presure | 19.7mmHg at 25°C |
| Appearance | clear liquid |
| Specific Gravity | 1.058 (20/4℃) |
| Color | Light orange to Yellow to Green |
| BRN | 385637 |
| PH | 2.4 (25g/l, H2O, 20℃) |
| Storage Condition | Flammables area |
| Explosive Limit | 2.3%(V) |
| Refractive Index | n20/D 1.421(lit.) |
3-chloro-2-butanon - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R10 - Flammable R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R2011/10/22 - |
| Safety Description | S16 - Keep away from sources of ignition. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S24/25 - Avoid contact with skin and eyes. |
| UN IDs | UN 1224 3/PG 3 |
| WGK Germany | 3 |
| RTECS | EL7062000 |
| TSCA | Yes |
| HS Code | 29147090 |
| Hazard Class | 3 |
| Packing Group | III |
3-chloro-2-butanon - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| overview | 3-chloro-2-butanone can be used as an intermediate in pharmaceutical and chemical synthesis. If 3-chloro -2-butanone is inhaled, please move the patient to fresh air. If the skin is in contact with the skin, remove the contaminated clothes, rinse the skin thoroughly with soapy water and clear water, and see a doctor if you feel uncomfortable. If you are in contact with clear eyes, you should separate the eyelids, rinse with flowing water or normal saline, and see a doctor immediately. If you eat, rinse your mouth immediately, prohibit vomiting, and see a doctor immediately. |
| preparation | in a 250 ml three-mouth flask equipped with a stirrer, a constant pressure funnel and a condenser tube, add 43.27g, 0.6 mol of butanone XVI and 36% HCl30.42 g, 0.3 mol, add 8.1g of copper chloride, 0.06 mol, slowly add 30% H2O249.23 g, 0.39 mol, at 35 degrees celsius for 15 minutes, after completion, the temperature is raised to 78 degrees Celsius and the reaction is refluxed for 5 hours, the reaction liquid is cooled to room temperature, the organic phase is separated, the organic phase is washed twice with saturated sodium carbonate solution, the anhydrous sodium sulfate is dried, and the fraction at 137-140 degrees Celsius is collected by fractional distillation to obtain 8.0 grams of brown liquid 3-chloro-2-butanone with a yield of 12.6%; |
| category | flammable liquid |
| toxicity classification | poisoning |
| acute toxicity | unreported-mouse LD50: 810 mg/kg |
| explosive hazard characteristics | blastable when mixed with air |
| flammability hazard characteristics | When heated, open flame, oxidant burns; thermal decomposition emits toxic chloride smoke |
| storage and transportation characteristics | warehouse is ventilated and dry at low temperature; prevent open flame, prevent high temperature, and store separately from oxidant |
| fire extinguishing agent | fog water, carbon dioxide, foam, dry powder |
Last Update：2024-04-09 20:48:19
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