Description Catalogue Number 800023 Synonyms 2,4-Pentanedione, ACAC Product Information CAS number 123-54-6 EC index number 606-029-00-0 EC number 204-634-0 Hill Formula C₅H₈O₂ Chemical formula CH₃COCH₂COCH₃ Molar Mass 100.12 g/mol HS Code 2914 19 90 Structure formula Image Applications Application Acetylacetone for synthesis. CAS No. 123-54-6, EC Number 204-634-0. Physicochemical Information Density 0.97 g/cm3 (20 °C) Explosion limit 2.4 - 11.4 %(V) Flash point 35 °C Ignition temperature 340 °C Melting Point -47.5 - -17.6 °C pH value 6 (200 g/l, H₂O, 20 °C) Vapor pressure 7.9 hPa (20 °C) Solubility 153.8 - 155.2 g/l Toxicological Information LD 50 oral LD50 Rat 575 mg/kg Safety Information according to GHS Hazard Pictogram(s) Hazard Statement(s) H226: Flammable liquid and vapour. H302: Harmful if swallowed. H311 + H331: Toxic in contact with skin or if inhaled. Precautionary Statement(s) P210: Keep away from heat. P280: Wear protective gloves/ protective clothing. P302 + P352: IF ON SKIN: Wash with plenty of soap and water. P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician. Signal Word Danger RTECS SA1925000 Storage class 3 Flammable liquids WGK WGK 1 slightly water endangering Disposal 1 Strongly contaminated halogen-free organic solvents: container A. Safety Information Hazard Symbols Harmful Categories of danger flammable, harmful R Phrase R 10-22 Flammable.Harmful if swallowed. S Phrase S 21-23-24/25 When using do not smoke.Do not breathe vapour.Avoid contact with skin and eyes. Storage and Shipping Information Storage Store below +30°C. Transport Information Declaration (railroad and road) ADR, RID UN 2310 , 3 (6.1), III Declaration (transport by air) IATA-DGR UN 2310 , 3 (6.1), III Declaration (transport by sea) IMDG-Code UN 2310 , 3 (6.1), III Specifications Assay (GC, area%) ≥ 99 % Density (d 20 °C/ 4 °C) 0.972 - 0.974 Identity (IR) passes test