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cis-4-Cyclohexene-1,2-dicarboxylic anhydride(935-79-5)

cis-4-Cyclohexene-1,2-dicarboxylic anhydride(935-79-5)
Product IdentificationBack to Contents
【Product Name】

cis-4-Cyclohexene-1,2-dicarboxylic anhydride

1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro-, (3aR,7aS)-
cis-1,2,3,6-Tetrahydrophthalic acid anhydride
cis-4-Cyclohexene-1,2-dicarboxylic acid anhydride
cis-4-Cyclohexene-1,2-dicarboxylic anhydride


【Molecular Weight】



【Beilstein Reference】

【EC Index Number】

【EC Class】

Irritant; Sensitising; Dangerous for the Environment
Physical and Chemical PropertiesBack to Contents

White flakes.
【Solubility in water】

【Melting Point】

103 - 104
【Boiling Point】


1.402 g/cm3
【Partition Coefficient】

First Aid MeasuresBack to Contents

Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.

Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.

Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).
Handling and StorageBack to Contents

Keep container closed when not in use. Store protected from moisture.

Use only in a well ventilated area. Minimize dust generation and accumulation. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Do not allow contact with water. Discard contaminated shoes. Keep from contact with moist air and steam.
Hazards IdentificationBack to Contents

Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. May cause systemic effects. Exposure may produce metabolic acidosis.

Causes skin burns. May cause skin rash (in milder cases), and cold and clammy skin with cyanosis or pale color.

Causes eye burns. May cause chemical conjunctivitis and corneal damage.

May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May cause perforation of the digestive tract. May cause systemic effects.

Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Contact with metals may evolve flammable hydrogen gas.
【UN (DOT)】

Exposure Controls/Personal ProtectionBack 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 minimize contact with skin.

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】

Effects may be delayed.
Fire Fighting MeasuresBack to Contents
【Flash Point】

【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. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Contact with water forms corrosive vapors. Runoff from fire control or dilution water may cause pollution. Extinguishing media: Use water spray to cool fire-exposed containers. Do NOT get water inside containers. For large fires, use water spray, fog or alcohol-resistant foam. Do NOT use straight streams of water. For small fires, use carbon dioxide, dry chemical, dry sand, or alcohol-resistant foam.
【Fire Potential】

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

Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation. Do not get water inside containers.
Stability and ReactivityBack to Contents

Moisture, oxidizing agents, strong bases.

Stable under normal temperatures and pressures. May decompose on exposure to moist air or water.

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

Fire will produce irritating, corrosive and/or toxic gases.
Transport InformationBack to Contents
【UN Number】

【Hazard Class】

【Packing Group】

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Fax: 021-67582001/03/05