Fumaric acid

  • (E)-Butenedioic acid
  • trans-1,2-Ethylenedicarboxylic acid
  • Allomaleic acid
  • Boletic acid
Formula
HOOCCHCHCOOH
Structure
Description
White, crystalline, odorless solid.
Uses
Fortifier in paper size resins, unsaturated polyester resins, & alkylated surface coating resins, misc applications, acidulant in gelatin desserts & dry beverage powders, chemical intermediate for plasticizers incl dibutyl fumarate.

Registry Numbers and Inventories.
CAS
110-17-8
EC (EINECS/ELINCS)
203-743-0
EC Index Number
607-146-00-X
EC Class
Irritant
RTECS
LS9625000
RTECS class
Mutagen; Primary Irritant
UN (DOT)
9126
Merck
13,4308
Beilstein/Gmelin
605763
Beilstein Reference
4-02-00-02202
EPA OPP
51201
Swiss Giftliste 1
G-3829
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C4H4O4
Formula mass
116.07
Melting point, °C
287
Boiling point, °C
356
Sublimation point, °C
290
Vapor pressure, mmHg
5.2E-6 (25 C)
Vapor density (air=1)
1.625
Saturation Concentration
Very low at 25 C
Evaporization number
Negligible at room temperature
Odor Threshold Odor threshold Odorless
Density
1.625 g/cm3
Solubility in water
Very soluble
pKa/pKb
3.03 (pKa)
Partition coefficient, pKow
0.46
Heat of vaporization
66.0 kJ/mol
Heat of combustion
-1327 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Insufficient information
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Disposal code
4
Stability
Stable under normal shipping and handling conditions. However, may decompose if heated.
Incompatibilities
Amines, bases, oxidizers, reducing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Autoignition, °C
375
Upper exp. limit, %
18.7
Lower exp. limit, %
2.9
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. Combustion generates toxic fumes. Extinguishing media: For small fires, use water spray, dry chemical, carbon dioxide or chemical foam.
Fire potential
Slightly flammable. Hoocch:chcooh; very flammable at elevated temperatures.
Hazards
Containers may explode when heated.
Combustion products
Irritating fumes of maleic anhydride may form in fires.

Health.
Poison_Class
5
Exposure effects
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated. Exposure may cause gastrointestinal disturbances and kidney
   Inhalation
May cause respiratory tract irritation. May cause effects similar to those described for ingestion. The toxicological properties of this substance have not been fully investigated.
   Skin
May cause skin irritation. May be absorbed through the skin.
   Eyes
Contact may cause transient eye irritation. Exposure to solid may cause pain and redness.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   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. Get medical aid if irritation develops or persists.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
9126
Response guide
Hazard class
9
USCG CHRIS Code
FUM
 
HS Code
2917 19 90
 
Std. Transport #
4962661