Acetylacetone CAS 123-54-6

1. Acetylacetone is a versatile building block for synthesizing various heterocycles (isoxazoles, pyrazoles, pyrimidines) and pharmaceuticals such as sulfamethazine and nicarbazine .
2. Acetylacetone CAS 123-54-6 serves as a key intermediate in organic synthesis, a transition metal chelating agent, and an analytical reagent for colorimetric determination of metals like iron and fluorine .
3. Acetylacetone is used as a solvent for cellulose acetate, a drier for varnishes and printing inks, and an additive in gasoline, lubricants, and pesticides .

1. Store Acetylacetone in a tightly sealed container in a cool, dry, well-ventilated area away from heat, sparks, and open flames, protected from light as it darkens upon exposure .
2. Keep Acetylacetone CAS 123-54-6 strictly away from strong oxidizing agents, and use only with explosion-proof equipment and non-sparking tools in areas with adequate ventilation or a chemical fume hood .
3. Handle Acetylacetone using appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing, and avoid breathing vapor or contact with skin and eyes .

1. Isolate the spill area immediately, eliminate all ignition sources, evacuate non-essential personnel, and wear full protective equipment including a self-contained breathing apparatus .
2. Contain liquid Acetylacetone CAS 123-54-6 using dry inert absorbent material like sand or vermiculite, collect using non-sparking tools into sealed, labeled containers for disposal, and wash the spill site after material pickup .
3. Personnel cleaning Acetylacetone spills must prevent entry into drains or waterways and dispose of waste according to hazardous material regulations, as Acetylacetone is classified for transport (UN 2310, Hazard Class 3, PG III) .

1. Acetylacetone is classified with GHS signal word "Warning" (or "Danger" by some sources) as a flammable liquid and vapor (H226, flash point 34-41°C) that is harmful if swallowed (H302, oral LD50 rat: 1000 mg/kg) .
2. Acetylacetone CAS 123-54-6 causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335); vapors are heavier than air and may travel to ignition sources causing flashback .
3. Acetylacetone is toxic in contact with skin or if inhaled (H311+H331) according to some classifications, forms explosive mixtures in air (LEL 1.7%, UEL 11.4%), and thermal decomposition produces toxic fumes including carbon oxides .