Butanone CAS78-93-3

Butanone（Methyl ethyl ketone） is an organic compound with the formula CH3COCH2CH3 and molecular weight 72.11. It is a clear, colorless liquid with a smell similar to acetone. It is volatile. It can be miscible with ethanol, ether, benzene, chloroform and oil. Soluble in 4 parts of water, but the solubility decreases when the temperature rises, and can form an azeotrope with water. Low toxicity, median lethal dose (rats, oral) 3300mg/kg. Flammable, vapor can form an explosive mixture with air. Vapor in high concentrations is narcotic

Methyl ethyl ketone

Molecular formula: C4H8O or CH3COCH2CH3

CAS:78-93-3

UN:1193

Appearance: colorless liquid with acetone-like odor.

Density: 0.8g /cm³

Boiling point 79.64 °C

Melting point: −86 °C

Flash point: -9 ºC

use

1, used as cellulose acetate, acrylic resin, alkyd resin, paint, ink solvent, dye binder, lubricant dewaxing agent, vulcanization accelerator, etc

2, used as a reagent for the determination of cadmium, copper and mercury, chromatographic analysis standard material and solvent for semiconductor lithography

3, GB 2760-96 specifies the permissible use of edible spices. Mainly used to prepare cheese, coffee and banana flavor. Can also be used as extraction solvent.

4, mainly used as a solvent, such as for lubricating oil dewaxing, coating industry and a variety of resin solvents, vegetable oil extraction process and refining process azeotrope distillation, its advantages are strong solubility, volatility is lower than acetone, belongs to the boiling point ketone solvent. Butanone or the preparation of medicine, dyes, detergents, fragrances, antioxidants and some catalysts are intermediates, synthesis of anti-peeling agent methyl ethyl ketone oxime, polymerization catalyst methyl ethyl ketone peroxide, corrosion inhibitor methyl pentynol, etc., in the electronics industry as integrated circuit lithography after the developer.

5. It is the raw material for preparing the acaricide pyridoamine.

Leakage emergency treatment

Quickly evacuate the personnel from the contaminated area to the safety zone, isolate them, and strictly restrict access. Cut off the fire. Emergency personnel are advised to wear self-contained positive pressure breathing apparatus and fire protective clothing. Do not contact spills directly. Cut off the source of leakage as much as possible to prevent entering the sewer, flood drainage ditch and other restricted Spaces. Small amount of leakage: adsorption or absorption with sand or other non-combustible materials. It can also be rinsed with a large amount of water and diluted into the wastewater system. A large number of leaks: build a embankment or dig a pit to contain; Cover with foam to reduce steam hazards. Transfer to tank car or special collector with explosion-proof pump. Recycle or transport to waste disposal site for disposal.

Waste disposal method: incineration method.

Protective measure

Respiratory system protection: When the concentration in the air exceeds the standard, self-priming filter gas mask (half mask) should be worn.

Eye protection: Wear chemical safety glasses if necessary.

Body protection: Wear ESD clothes.

Hand protection: Wear latex gloves.

Others: Smoking is strictly prohibited on site. Pay attention to personal hygiene. Avoid prolonged and repeated exposure.

First aid measure

Skin contact: Remove contaminated clothing and rinse skin thoroughly with soapy water and clean water.

Eye contact: Lift eyelids and rinse with running water or saline. Seek medical attention.

Inhalation: Quickly remove from the scene to fresh air. Keep your airway clear. Administer oxygen if breathing is difficult. If breathing stops, give artificial respiration immediately. Seek medical attention.

Ingestion: Drink enough warm water to induce vomiting, wash the stomach with water or 1% sodium thiosulfate solution. Seek medical attention.

Operational handling and storage

Operation precautions: closed operation, full ventilation. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that operators wear a self-priming filter gas mask (half mask), chemical safety glasses, antistatic work clothes, and rubber oil-resistant gloves. Keep away from fire and heat. No smoking in the workplace. Use explosion-proof ventilation systems and equipment. Prevents steam from leaking into the workplace air. Avoid contact with oxidants, reducing agents and alkalis. When filling, the flow rate should be controlled, and there is a grounding device to prevent static accumulation. When handling, light loading and unloading should be done to prevent damage to packaging and containers. Equipped with the corresponding variety and quantity of fire equipment and leakage emergency treatment equipment. Empty containers may have harmful residues.

Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat. The temperature of the reservoir should not exceed 30℃. Keep the container sealed. It should be stored separately from oxidants, reducing agents and alkalis, and should not be mixed. Explosion-proof lighting and ventilation facilities are adopted. Do not use mechanical equipment and tools that are prone to spark. The storage area should be equipped with leak emergency treatment equipment and suitable containment materials.

Transport precautions: Transport vehicles should be equipped with the appropriate variety and quantity of fire equipment and leakage emergency treatment equipment. It is best to transport early and early in summer. The tank (tank) car used in transportation should have a grounding chain, and a hole partition can be provided in the tank to reduce static electricity generated by shock. It is strictly prohibited to mix with oxidants, reducing agents, alkalis, edible chemicals, etc. During transportation, it should be protected from sunlight, rain and high temperature. Stay away from fire, heat source and high temperature area during stopover. The exhaust pipe of the vehicle carrying the article must be equipped with a fire retardant device, and the loading and unloading of mechanical equipment and tools that are easy to produce sparks is prohibited. Road transport should follow the prescribed route, do not stay in residential areas and densely populated areas. It is forbidden to slip them in railway transportation. It is strictly prohibited to use wooden or cement ships for bulk transport.

Packing precautions: small opening steel drum; Ampoule bottle outside ordinary wooden case; Threaded glass bottles, iron lid pressed glass bottles, plastic bottles or metal barrels (cans) outside ordinary wooden cases.