Product Identification
【Product Name】ABL ；2-乙酰基-r-丁内酯
【Synonyms】2-Acetylbutyrolactone
【CAS】517-23-7
【Formula】C6H8O3
【Molecular Weight】128.12
【EINECS】208-235-2
【Merck】13,85
【Beilstein/Gmelin】112676
【Beilstein Reference】5-17-11-00016
【EC Class】irritant

Physical and Chemical Properties
【Appearance】Clear colorless to faint yellow liquid. Ester-like odor.
【Solubility in water】Very soluble
【Boiling Point】107℃
【Density】1.174 g/cm3 (18℃)
【pKa/pKb】11.99 (pKa)
【Refractive Index】1.4562 (20℃)

First Aid Measures
【Ingestion】Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
【Inhalation】Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
【Skin】Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
【Eyes】Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage
【Storage】Store in a cool, dry place. Keep container closed when not in use.
【Handling】Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification
【Ingestion】Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
【Inhalation】Causes respiratory tract irritation.
【Skin】Causes skin irritation.
【Eyes】Causes eye irritation.
【EC Risk Phrase】R 36/37/38
【EC Safety Phrase】S 26 36

Exposure Controls/Personal Protection
【Personal Protection】Eyes: Wear appropriate protective eyeglasses or chemical safety ggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
【Respirators】Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
【Poison Class】3

Fire Fighting Measures
【Flash Point】135℃
【Fire Fighting】Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Accidental Release Measures
【Small spills/leaks】Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment.

Stability and Reactivity
【Disposal Code】1
【Stability】Stable under normal temperatures and pressures.
【Incompatibilities】Strong oxidants.
【Decomposition】Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Transport Information
【HS Code】2932 29 80