Product Identification

Product Name

2,2-Dimethyl-1,3-dioxane-4,6-dione

Synonyms

2,2-Dimethyl-1,3-dioxane-4,6-dione
2,2-Dimethyl-4,6-dioxo-m-dioxane
2,2-Dimethyl-m-dioxane-4,6-dione
Cyclic isopropylidene malonate
Isopropylidene malonate
Meldrumic acid

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 goggles. 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.