| Product Identification | Back to Contents | 【Product Name】
Acetylenedicarboxylic acid dimethyl ester | 【Synonyms】
1,2-Bis(methoxycarbonyl)ethyne
2-Butynedioic acid, dimethyl ester
Acetylenedicarboxylic acid, dimethyl ester
Bis(carbomethoxy)acetylene
Dimethyl 1,2-acetylenedicarboxylate
Dimethyl ethynedicarboxylate | 【CAS】
762-42-5 | 【Formula】
C6H6O4 | 【Molecular Weight】
142.11000000000001 | 【EINECS】
212-098-4 | 【RTECS】
ES0175000 | 【RTECS Class】
Agricultural Chemical and Pesticide | 【Beilstein/Gmelin】
607063 | 【Beilstein Reference】
4-02-00-02291 | 【EC Class】
corrosive |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
Clear slightly yellow liquid. | 【Solubility in water】
Slightly soluble | 【Melting Point】
-18 | 【Boiling Point】
204 | 【Vapor Pressure】
0.3 (25 C) | 【Density】
1.1532 g/cm3 (20 C) | 【Partition Coefficient】
1.5 | 【Heat Of Vaporization】
44.1 kJ/mol | 【Refractive Index】
1.4439 (20 C) |
| First Aid Measures | Back to Contents | 【Ingestion】
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. | 【Inhalation】
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. | 【Skin】
Get medical aid 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. | 【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】
Keep away from heat, sparks, and flame. Store in a cool, dry place. Store in a tightly closed container. Corrosives area. | 【Handling】
Wash thoroughly after handling. Use only in a well ventilated area. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Do not ingest or inhale. Discard contaminated shoes. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. |
| Hazards Identification | Back to Contents | 【Inhalation】
May cause cyanosis, characterized by bluish-colored skin. Causes chemical burns to the respiratory tract. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema. | 【Skin】
Causes skin burns. | 【Eyes】
Causes eye burns. Lachrymator. | 【Ingestion】
Causes gastrointestinal tract burns. May cause methemoglobinemia, cyanosis, convulsions, and death. | 【Hazards】
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. | 【EC Risk Phrase】
R 21/22 34 36 | 【EC Safety Phrase】
S 26 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】
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions. 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】
Chronic inhalation and ingestion may cause effects similar to those of acute inhalation and ingestion. | 【Poison Class】
3 |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
86 | 【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. Use water spray to keep fire-exposed containers cool. Combustible Liquid. Containers may explode if exposed to fire. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use agent most appropriate to extinguish fire. 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. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Provide ventilation. |
| Stability and Reactivity | Back to Contents | 【Disposal Code】
1 | 【Stability】
Stable under normal temperatures and pressures. | 【Incompatibilities】
Strong oxidizing agents, strong acids, strong bases, and strong reducing agents. Explosive reaction with 1-methylsilacyclopenta-2,4-diene at 150 C. Octakis(trifluorophosphine)dirhodium catalyzes explosive polymerization of the acid above 20 C. | 【Decomposition】
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide. | 【Combustion Products】
Fire may produce irritating, corrosive and/or toxic gases. |
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| Company Name: |
J & K SCIENTIFIC LTD. |
| Tel: |
010-82848833 400-666-7788 |
| Fax: |
86-10-82849933 |
| WebSite: |
http://www.jkchemical.com |
|