Methylmalonic acid

  • Isosuccinic acid
  • Methylpropanedioic acid
  • 1,1-Ethanedicarboxylic acid
  • 2-Methylmalonic acid
Formula
C4H6O4
Structure
Description
White.

Registry Numbers and Inventories.
CAS
516-05-2
EC (EINECS/ELINCS)
208-219-5
RTECS
OO1400000
RTECS class
Other
Beilstein/Gmelin
1756084
Beilstein Reference
4-02-00-01932
Swiss Giftliste 1
G-5870

Properties.
Formula
C4H6O4
Formula mass
118.08
Melting point, °C
168
Boiling point, °C
271
Vapor pressure, mmHg
818 (85 C)
Critical temperature
472
Critical pressure
49.2
Density
1.455 g/cm3
Solubility in water
Very soluble
pKa/pKb
2.97 (pKa)
Partition coefficient, pKow
-0.02

Hazards and Protection.
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.
Protection
Eyes: Wear chemical goggles. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Irritating and toxic fumes and gases.

Fire.
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. Extinguishing media: Use agent most appropriate to extinguish fire.

Health.
Poison_Class
3
Exposure effects
The toxicological properties of this material have not been investigated.

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

Transport.