| Product Identification | Back to Contents | 【Product Name】
3-Methylcrotonic acid | 【Synonyms】
3,3-Dimethylacrylic acid
3-Methylbut-2-enoic acid
3-Methylcrotonic acid
Senecioic acid | 【CAS】
541-47-9 | 【Formula】
C5H8O2 | 【Molecular Weight】
100.11 | 【EINECS】
208-782-7 | 【RTECS】
GQ5425000 | 【RTECS Class】
Primary Irritant | 【Beilstein/Gmelin】
1720305 | 【Beilstein Reference】
4-02-00-01555 |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
Slightly yellow crystalline powder. | 【Solubility in water】
Very soluble | 【Melting Point】
63 - 65 | 【Boiling Point】
195 | 【Vapor Pressure】
0.2 (25 C) | 【Density】
1.0062 g/cm3 (24 C) | 【pKa/pKb】
5.15 (pKa) | 【Partition Coefficient】
1.35 | 【Heat Of Vaporization】
47.5 kJ/mol | 【Heat Of Combustion】
-2636 kJ/mol | 【Refractive Index】
1.4392 (25 C) |
| First Aid Measures | Back to Contents | 【Ingestion】
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. | 【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. |
| Handling and Storage | Back to Contents | 【Storage】
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. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Wash clothing before reuse. |
| Hazards Identification | Back to Contents | 【Ingestion】
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. | 【Inhalation】
Causes respiratory tract irritation. | 【Skin】
Causes skin irritation. | 【Eyes】
Causes eye irritation. | 【EC Risk Phrase】
R 34 | 【EC Safety Phrase】
S 26 36/37/39 45 | 【UN (DOT)】
3261 |
| 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 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. |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
93 | 【Autoignition】
465 | 【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: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam. |
| 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. Remove all sources of ignition. Provide ventilation. |
| Stability and Reactivity | Back to Contents | 【Stability】
Stable at room temperature in closed containers under normal storage and handling conditions. | 【Incompatibilities】
Strong oxidizing agents. | 【Decomposition】
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide. |
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| Company Name: |
Alfa Aesar |
| Tel: |
400-6106006 |
| Fax: |
021-67582001/03/05 |
| WebSite: |
http://chemicals.thermofisher.cn |
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