2-Butanone

CAS 78-93-3 C₄H₈O MW 72.1000 Danger
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Emergency: 911 | Poison Control: 1-800-222-1222

Safety Data Sheets

ManufacturerDownload
Alfa Aesar Download PDF
Sigma Aldrich Download PDF
TCI Download PDF

Hazard Statements

CodeStatementHazard Class
H225 Highly Flammable liquid and vapor Flammable liquids
H303 May be harmful if swallowed Acute toxicity, oral
H305 May be harmful if swallowed and enters airways Aspiration hazard
H315 Causes skin irritation Skin corrosion/irritation
H320 Causes eye irritation Serious eye damage/eye irritation
H333 May be harmful if inhaled Acute toxicity, inhalation
H335 May cause respiratory irritation Specific target organ toxicity, single exposure; Respiratory tract irritation
H370 Causes damage to organs Specific target organ toxicity, single exposure
H371 May cause damage to organs Specific target organ toxicity, single exposure
H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure

Precautionary Statements

CodeStatement
P210 Keep away from heat, hot surface, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/.../] equipment.
P242 Use only non-sparking tools.
P243 Take precautionary measures against static discharge.
P260 Do not breathe dust/fume/gas/mist/vapors/spray.
P261 Avoid breathing dust/fume/gas/mist/vapors/spray.
P264 Wash hands [and ...] thoroughly after handling.
P264+P265 Wash hands [and ...] thoroughly after handling. Do not touch eyes.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P301+P316 IF SWALLOWED: Get emergency medical help immediately.
P301+P317 IF SWALLOWED: Get medical help.
P302+P352 IF ON SKIN: wash with plenty of water/...
P303+P361+P353 IF ON SKIN (or hair): Take off Immediately all contaminated clothing. Rinse SKIN with water [or shower].
P304+P317 (Deleted) IF INHALED: Get medical help.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do - continue rinsing.
P308+P316 IF exposed or concerned: Get emergency medical help immediately.
P319 Get medical help if you feel unwell.
P321 Specific treatment (see information on this label and safety datasheet)).
P331 Do NOT induce vomiting.
P332+P317 If skin irritation occurs: Get medical help.
P337+P317 If eye irritation persists: Get medical help.
P362+P364 Take off contaminated clothing and wash it before reuse.
P370+P378 In case of fire: Use ... to extinguish.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P403+P235 Store in a well-ventilated place. Keep cool.
P405 Store locked up.
P501 Dispose of contents/container to ...

Exposure Limits

OSHA PEL200 ppm
NIOSH REL200 ppm
NIOSH STEL300 ppm
NIOSH IDLH3000 ppm
Skin NotationYes — can be absorbed through skin

Physical Properties

Colorless liquid with a moderately sharp, fragrant, mint- or acetone-like odor.

Boiling Point175°F
Flash Point16°F
Vapor Pressure78 mmHg
Specific Gravity0.81

NFPA 704 Diamond

3
1
0
Health Fire Reactivity

Target Organs

Lungs Skin Eyes Nervous System Liver

irritation; liver, kidney, and nervous system effects

Synonyms

ethyl methyl ketone; MEK; methyl acetone; methyl ethyl ketone

Data Sources

Disclaimer: This information is compiled from public regulatory databases for reference only. It does not replace the manufacturer's Safety Data Sheet (SDS). Always consult the official SDS for your specific product before handling chemicals.

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