| [Flash Point] 131 | |
| [Fire Fighting] Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. | |
| [Fire Potential] Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. | |
| [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] Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. | |
| [Skin] Get medical aid. 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. | |
| [Storage] Store in a cool, dry place. Store in a tightly closed container. Refrigerator (approx 4 C). | |
| [Handling] Wash thoroughly after handling. Wash hands before eating. Use only in a well ventilated area. Minimize dust generation and accumulation. Do not get on skin or in eyes. Do not ingest or inhale. | |
| [Ingestion] Causes gastrointestinal irritation with nausea, vomiting and diarrhea. | |
| [Inhalation] May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. | |
| [Skin] May cause severe irritation and possible burns. | |
| [Eyes] Contact with eyes may cause severe irritation, and possible eye burns. | |
| [Hazards] Contact with metals may evolve flammable hydrogen gas. | |
| [EC Risk Phrase] R 23/24/25 36/38 | |
| [EC Safety Phrase] S 26 36/37/39 45 | |
| [UN (DOT)] 3261 | |
| [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 and clothing 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. | |
| [Appearance] Light beige solid. | |
| [Solubility in water] Very soluble | |
| [Melting Point] 180 - 185 | |
| [Boiling Point] 292 | |
| [pKa/pKb] 0.67 (pKa) | |
| [Partition Coefficient] -.26 | |
| [Product Name] Acetylenedicarboxylic acid | |
| [Synonyms] 2-Butyne-1,4-dioic acid 2-Butynedioic acid Acetylenedicarboxylic acid But-2-ynedioic acid | |
| [CAS] "CASEN_142-45-0.htm">142-45-0 | |
| [Formula] C4H2O4 | |
| [Molecular Weight] 114.06 | |
| [EINECS] 205-536-0 | |
| [Beilstein/Gmelin] 878357 | |
| [Beilstein Reference] 4-02-00-02290 | |
| [Small spills/leaks] Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. | |
| [Disposal Code] 4 | |
| [Incompatibilities] Bases; reducing agents; and oxidizing agents. | |
| [Stability] Stable under normal temperatures and pressures. | |
| [Decomposition] Carbon monoxide, carbon dioxide. | |
| [Combustion Products] Fire may produce irritating, corrosive and/or toxic gases. | |
| [UN Number] 3261 | |
| [Hazard Class] 8 | |
| [Packing Group] I; II; III | |
| [HS Code] 2917 19 90 |
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