CAS: 78-93-3
UN: 1193
EC Number: 201-159-0
2-Butanone is a manufactured chemical. It is a colorless liquid with a sharp, sweet odor. It is also known as methyl ethyl ketone (MEK). 2-Butanone is produced in large quantities. Nearly half of its use is in paints and other coatings because it will quickly evaporate into the air and it dissolves many substances. It is also used in glues and as a cleaning agent. 2-Butanone occurs as a natural product.
Chemical Safety
Physical Properties
Physical State; Appearance
colourless liquid with characteristic odour. 
Physical dangers
The vapour is heavier than air and may travel along the ground; distant ignition possible. 
Chemical dangers
Reacts violently with strong oxidants and inorganic acids. This generates fire and explosion hazard. Attacks some plastics. 
Chemical Properties
Formula: C4H8O / CH3COCH2CH3
Molecular mass: 72.1
Boiling point: 80°C
Melting point: -86°C
Relative density (water = 1): 0.8
Solubility in water, g/100ml at 20°C: 29 (good)
Vapour pressure, kPa at 20°C: 10.5
Relative vapour density (air = 1): 2.41
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.1
Flash point: -9°C
Auto-ignition temperature: 505°C
Explosive limits, vol% in air: 1.8-11.5
Octanol/water partition coefficient as log Pow: 0.29
Viscosity: 0.40 cP at 25°C 
According to UN GHS Criteria
Highly flammable liquid and vapour Causes serious eye irritation May cause respiratory irritation May cause drowsiness or dizziness Suspected of damaging fertility or the unborn child May be harmful if swallowed and enters airways
Exposure And Health Effects
The substance can be absorbed into the body by inhalation, by ingestion and through the skin.The substance is irritating to the eyes and respiratory tract. The substance may cause effects on the central nervous system. Exposure could cause unconsciousness.
Fireproof. Separated from strong oxidants and strong acids. Cool. Well closed. Store in an area without drain or sewer access.
12+ Years Of Experience
With own railway line in factory, saving domestic costs from factory to port.
Hainan Starry International Trading Co., Ltd. was established in 2011, and its predecessor, Hainan Starry International Trading., was established in 1995. Up to now, Hainan Starry become a comprehensive chemical trade platform integrating sales, warehousing, logistics and transportation, and international trade. Hainan Starry International Trading Co., Ltd. With a registered capital of 29 million RMB. Our total operating income in 2020 has beyond 1.5 billion RMB. We are aimed at providing professional and efficient solutions to global customers.
As a liquid chemical company in the Central Plains region, we are well aware of the importance of safety management.
Huge service network
It has a huge service network, and its high-coverage and efficient services have been recognized by many companies and institutions.
Comprehensive Delivery Services
One-Stop Style Service
company distribution networks have been established, with fast delivery and timely delivery, and sincerely provide freight colleagues across the country, door-to-door service and self-pickup
Hainan Starry is an integrated chemical liquid service provider from sales to transportation and trade.
Three chemical railway berth connection line
More than 27 years of chemical solution experience
Over 100K tanks filed stock capacity
With its own chemical logistics company and over 100 chemical liquid tank trucks