ChemicalBook >>Glutaric anhydride>>Dihydro-2H-pyran-2,6(3H)-dione(108-55-4)

Dihydro-2H-pyran-2,6(3H)-dione(108-55-4)

Dihydro-2H-pyran-2,6(3H)-dione(108-55-4)
Product IdentificationBack to Contents
【Product Name】

Dihydro-2H-pyran-2,6(3H)-dione
【Synonyms】

2H-Pyran-2,6(3H)-dione, dihydro-
Glutaric acid anhydride
Pentanedioic acid anhydride
Pentanedioic anhydride
Pyroglutaric acid
【CAS】

108-55-4
【Formula】

C5H6O3
【Molecular Weight】

114.1
【EINECS】

203-593-6
【RTECS】

MA3850000
【RTECS Class】

Other
【Beilstein/Gmelin】

110051
【Beilstein Reference】

5-17-11-00009
【EC Class】

harmful, irritant
Physical and Chemical PropertiesBack to Contents
【Appearance】

White powder.
【Solubility in water】

Very soluble
【Melting Point】

52 - 55
【Boiling Point】

287
【Vapor Pressure】

0.003 (25 C)
【Density】

1.411 g/cm3
【Partition Coefficient】

-.92
【Heat Of Vaporization】

52.6
【Heat Of Combustion】

-2207 kJ/mol
First Aid MeasuresBack to Contents
【Ingestion】

Do NOT induce vomiting. 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】

Get medical aid immediately. Immediately 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. Get medical aid immediately.
Handling and StorageBack to Contents
【Storage】

Store in a cool, dry place. Keep container closed when not in use.
【Handling】

Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Hazards IdentificationBack to Contents
【Ingestion】

May cause central nervous system depression. May cause gastrointestinal tract damage. May be harmful if swallowed.
【Inhalation】

Causes respiratory tract irritation.
【Skin】

Causes skin irritation. If absorbed, may cause symptoms similar to those for ingestion. May be harmful if absorbed through the skin.
【Eyes】

Causes eye irritation.
【EC Risk Phrase】

R 21/22 37/38 41
【EC Safety Phrase】

S 26 36/37/39
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 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.
【Poison Class】

4
Fire Fighting MeasuresBack to Contents
【Flash Point】

120
【Autoignition】

320
【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: Do NOT use water directly on fire. Use foam, dry chemical, or carbon dioxide.
【Upper exp. limit】

13.1
【Lower exp. limit】

2
Accidental Release MeasuresBack to Contents
【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.
Stability and ReactivityBack to Contents
【Disposal Code】

4
【Stability】

May decompose on exposure to moist air or water.
【Incompatibilities】

Strong oxidizing agents, acids, bases, alcohols, amines.
【Decomposition】

Carbon monoxide, carbon dioxide, acrid smoke and fumes.
Transport InformationBack to Contents
【HS Code】

2917 19 90
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