| Product Identification | Back to Contents | 【Product Name】
Diethyl maleate | 【Synonyms】
2-Butenedioic acid, (Z)-, diethyl ester
Diethyl (Z)-but-2-enedioate
Ethyl maleate
Maleic acid, diethyl ester
Staflex DEM | 【CAS】
141-05-9 | 【Formula】
C8H12O4 | 【Molecular Weight】
172.18 | 【EINECS】
205-451-9 | 【RTECS】
ON1225000 | 【RTECS Class】
Mutagen; Primary Irritant | 【Merck】
13,3150 | 【Beilstein/Gmelin】
1100825 | 【Beilstein Reference】
4-02-00-02207 | 【EC Class】
irritant |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
Clear, colorless liquid. | 【Solubility in water】
Insoluble | 【Melting Point】
-11 | 【Boiling Point】
225 | 【Vapor Pressure】
10 (57 C) | 【Density】
1.0806 g/cm3 (8 C) | 【Vapor Density】
5.94 | 【Refractive Index】
1.43969 (16.2 C) |
| First Aid Measures | Back to Contents | 【Ingestion】
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. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. | 【Eyes】
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. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. | 【Handling】
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. |
| Hazards Identification | Back to Contents | 【Ingestion】
May cause irritation of the digestive tract. | 【Inhalation】
May cause respiratory tract irritation. | 【Skin】
Causes mild skin irritation. | 【Eyes】
Causes mild eye irritation. | 【Hazards】
During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. | 【EC Risk Phrase】
R 43 | 【EC Safety Phrase】
S 28 36/37 | 【UN (DOT)】
3334 |
| 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】
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】
93 | 【Autoignition】
350 | 【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 when heated. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. | 【Upper exp. limit】
7.7 | 【Lower exp. limit】
1.1 |
| 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 | 【Incompatibilities】
Oxidizing agents, reducing agents, acids, bases. | 【Stability】
Stable under normal temperatures and pressures. | 【Decomposition】
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide. |
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