Acetylacetone [2,4-pentanedione]

CAS 123-54-6 C₅H₈O₂ MW 100.1200 Danger
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Emergency: 911 | Poison Control: 1-800-222-1222

Hazard Statements

CodeStatementHazard Class
H226 Flammable liquid and vapor Flammable liquids
H302 Harmful if swallowed Acute toxicity, oral
H311 Toxic in contact with skin Acute toxicity, dermal
H320 Causes eye irritation Serious eye damage/eye irritation
H331 Toxic if inhaled Acute toxicity, inhalation
H335 May cause respiratory irritation Specific target organ toxicity, single exposure; Respiratory tract irritation
H341 Suspected of causing genetic defects Germ cell mutagenicity
H370 Causes damage to organs Specific target organ toxicity, single exposure
H402 Harmful to aquatic life Hazardous to the aquatic environment, acute hazard
H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard

Precautionary Statements

CodeStatement
P203 Obtain, read and follow all safety instructions before use.
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.
P262 Do not get in eyes, on skin, or on clothing.
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.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
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+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.
P316 Get emergency medical help immediately.
P318 if exposed or concerned, get medical advice.
P319 Get medical help if you feel unwell.
P321 Specific treatment (see information on this label and safety datasheet)).
P330 Rinse mouth.
P337+P317 If eye irritation persists: Get medical help.
P361+P364 Take off immediately all 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 ...

Physical Properties

A colorless or yellow colored liquid.

Boiling Point284.7°F
Flash Point93°F
Specific Gravity0.975

Target Organs

Lungs Skin Eyes Nervous System

Narcosis; CNS depression; eye, nose, throat, and skin irritation

Synonyms

2,4-pentanedione; acetoacetone; diacetyl methane

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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