| Product Identification | Back 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 Properties | Back 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 Measures | Back 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 Storage | Back 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 Identification | Back 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 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 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 Measures | Back 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 Measures | Back 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 Reactivity | Back 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. |
|
| Company Name: |
J & K SCIENTIFIC LTD. |
| Tel: |
010-82848833 400-666-7788 |
| Fax: |
86-10-82849933 |
| WebSite: |
http://www.jkchemical.com |
|