m-Dioxane-4,6-dione, 2,2-dimethyl

  • 2,2-Dimethyl-m-dioxane-4,6-dione
  • 2,2-Dimethyl-1,3-dioxane-4,6-dione
  • 2,2-Dimethyl-4,6-dioxo-m-dioxane
  • Cyclic isopropylidene malonate
  • Isopropylidene malonate
  • Meldrumic acid
Formula
C6H8O4
Structure
Description
Brown white solid.

Registry Numbers and Inventories.
CAS
2033-24-1
EC (EINECS/ELINCS)
217-992-8
R 36/38
RTECS
JH0800000
RTECS class
Other
Merck
13,5839
Beilstein/Gmelin
117310
Beilstein Reference
5-19-05-00008
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C6H8O4
Formula mass
144.12
Melting point, °C
96
Boiling point, °C
305
Density
1.382 g/cm3
Solubility in water
Very soluble
pKa/pKb
11.85 (pKa)
Partition coefficient, pKow
0.58

Hazards and Protection.
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.
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.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container.
Stability
No data.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
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.

Health.
Exposure effects
   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.

First aid
 
   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.

Transport.