Citraconic anhydride 616-02-4 purity99% CAS NO.616-02-4

Synonyms: 2,5-Furanedione, 3-methyl;3-Methyl-2,5-furandione;3-methyl-5-furandione;3-methyl-furan-2,5-dione;3-Methylmaleic anhydride;3-methylmaleicanhydride;alpha-Methylmaleic anhydride;alpha-methylmaleicanhydride
CAS: 616-02-4
MF: C5H4O3
MW: 112.08
EINECS: 210-459-0
Product Categories: Rubber & Plastic Auxiliary Agent;Anhydride Monomers;Monomers;Polymer Science;Carbonyl Compounds;Carboxylic Acid Anhydrides;Organic Building Blocks
Mol File: 616-02-4.mol
Citraconic anhydride Structure
Citraconic anhydride Chemical Properties
Melting point  6-10 °C(lit.)
Boiling point  213-214 °C(lit.)
density  1.247 g/mL at 25 °C(lit.)
vapor density  4 (vs air)
refractive index  n20/D 1.471(lit.)
Fp  215 °F
storage temp.  Store at RT.
Water Solubility  decomposes
Sensitive  Moisture Sensitive
BRN  1835
CAS DataBase Reference 616-02-4(CAS DataBase Reference)
NIST Chemistry Reference 2,5-Furandione, 3-methyl-(616-02-4)
EPA Substance Registry System 2,5-Furandione, 3-methyl-(616-02-4)
Safety Information
Hazard Codes  T
Risk Statements  23/24/25-36/37/38-42/43-34-24
Safety Statements  26-36/37/39-45-28A-23-36/37
RIDADR  UN 2810 6.1/PG 3
WGK Germany  3
RTECS  GE6825000
F  10-21
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  29171990
Hazardous Substances Data 616-02-4(Hazardous Substances Data)

【Synonyms】

2-Methylmaleic anhydride
3-Methylmaleic anhydride
alpha-Methylmaleic anhydride
Citraconic acid anhydride
Citraconic anhydride
Monomethylmaleic anhydride
【CAS】

616-02-4
【Formula】

C5H4O3
【Molecular Weight】

112.08
【EINECS】

210-459-0
【RTECS】

GE6825000
【RTECS Class】

Primary Irritant
【Beilstein/Gmelin】

1835
【Beilstein Reference】

5-17-11-00065
【EC Class】

toxic, irritant, sensitizing
Physical and Chemical Properties Back to Contents
【Appearance】

Colorless liquid.
【Solubility in water】

Insoluble
【Melting Point】

8 - 12
【Boiling Point】

213
【Vapor Pressure】

10 (47 C)
【Density】

1.2649 g/cm3 (0 C)
【Partition Coefficient】

.23
【Heat Of Vaporization】

44.8 kJ/mol
【Usage】

Reagent for alkalies, alcohols, and amines.
【Vapor Density】

1.247
【Refractive Index】

1.47 (15.4 C)
First Aid Measures Back to Contents
【Ingestion】

Never give anything by mouth to an unconscious person. Get medical aid. 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. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
【Skin】

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
【Eyes】

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Handling and Storage Back to Contents
【Storage】

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.
【Handling】

Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Do not allow contact with water. Keep from contact with moist air and steam.
Hazards Identification Back to Contents
【Inhalation】

May cause respiratory tract irritation. May cause cardiac abnormalities. Inhalation at high concentrations may cause CNS depression and asphixiation.
【Skin】

May cause skin irritation. Harmful if absorbed through the skin.
【Eyes】

May cause eye irritation.
【Ingestion】

May cause irritation of the digestive tract. May cause cardiac disturbances. May cause central nervous system depression.
【Hazards】

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
【EC Risk Phrase】

R 24 36/38
【EC Safety Phrase】

S 26 28 36/37/39 45
【UN (DOT)】

2810
Exposure Controls/Personal Protection Back to Contents
【Personal 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 protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
【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.
【Exposure Effects】

Epichlorohydrin ingestion has resulted in cyanosis, muscular relaxation or paralysis, tremor, seizures, and respiratory arrest in animal studies.
【Poison Class】

4
Fire Fighting Measures Back to Contents
【Flash Point】

101
【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. Containers may explode when heated. Combustible material; may burn but does not ignite readily. Runoff from fire control or dilution water may cause pollution. Extinguishing media: Do NOT get water inside containers. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray. Cool containers with flooding quantities of water until well after fire is out.
【Fire Potential】

Combustible material: may burn but does not ignite readily.
Accidental Release Measures Back to Contents
【Small spills/leaks】

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Provide ventilation. Do not get water inside containers.
Stability and Reactivity Back to Contents
【Incompatibilities】

Oxidizing agents, moisture.
【Stability】

Stable under normal temperatures and pressures.
【Decomposition】

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
【Combustion Products】

Fire may produce irritating, corrosive and/or toxic gases.
Transport Information Back to Contents
【UN Number】

2810
【Hazard Class】

6.1
【Packing Group】

I; II; III
【HS Code】

2917 19 90