Product Identification
【Product Name】2,2-Dimethyl-1,3-dioxane-4,6-dione
【Synonyms】Meldrumic acid；丙二酸环异丙酯
【CAS】2033-24-1
【Formula】C6H8O4
【Molecular Weight】144.12
【EINECS】217-992-8
【RTECS】JH0800000
【RTECS Class】Other
【Merck】13,5839
【Beilstein/Gmelin】117310
【Beilstein Reference】5-19-05-00008

Physical and Chemical Properties
【Appearance】Brown white solid.
【Solubility in water】Very soluble
【Melting Point】96℃
【Boiling Point】305℃
【Density】1.382 g/cm3
【pKa/pKb】11.85 (pKa)
【Partition Coefficient】.58

First Aid Measures
【Ingestion】Get medical aid. Wash mouth out with 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】Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
【Eyes】Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.

Handling and Storage
【Storage】Store in a tightly closed container. Store in a dry area. Keep under a nitrogen blanket. Refrigerator (approx 4 C).
【Handling】Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.

Hazards Identification
【Ingestion】The toxicological properties of this substance have not been fully investigated.
【Inhalation】May cause respiratory tract irritation.
【Skin】May cause skin irritation.
【Eyes】May cause eye irritation.
【EC Risk Phrase】R 36/38
【EC Safety Phrase】S 26 36

Exposure Controls/Personal Protection
【Personal Protection】Eyes: Wear chemical ggles. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear a chemical apron.
【Respirators】A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.

Fire Fighting Measures
【Fire Fighting】Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Accidental Release Measures
【Small spills/leaks】Vacuum or sweep up material and place into a suitable disposal container.

Stability and Reactivity
【Stability】No data.
【Incompatibilities】Strong oxidizing agents.
【Decomposition】Carbon monoxide, carbon dioxide.