Dimethyl malonate

  • Methyl malonate
  • Dimethyl propanedioate
  • Dimethyl 1,3-propanedioate
  • Malonic acid, dimethyl ester
  • Propanedioic acid, dimethyl ester
Formula
CH2(COOCH3)2
Structure
Description
Clear, colorless liquid.

Registry Numbers and Inventories.
CAS
108-59-8
EC (EINECS/ELINCS)
203-597-8
S 23 24/25
RTECS
OO0950000
RTECS class
Primary Irritant
Merck
12,6169
Beilstein/Gmelin
774261
Beilstein Reference
4-02-00-01880
Swiss Giftliste 1
G-8518
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C5H8O4
Formula mass
132.12
Melting point, °C
-62
Boiling point, °C
181
Vapor pressure, mmHg
45 (101 C)
Density
1.1722 g/cm3 (0 C)
Solubility in water
Very soluble
Viscosity
2.21 cp (20 C)
Refractive index
1.4149 (20 C)
pKa/pKb
11.79 (pKa)
Heat of vaporization
61.88 kJ/mol
Heat of combustion
-2313 kJ/mol

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 safety glasses and chemical goggles if splashing is possible. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
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.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Acids - bases - oxidizing agents - reducing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
90
Autoignition, °C
440
Upper exp. limit, %
17.4
Lower exp. limit, %
1.3
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
4
Exposure effects
The toxicological properties of this material have not been investigated.

First aid
 
   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.
   Skin
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.

Transport.
HS Code
2917 19 10