Caprolactam
- Hexahydro-2H-azepin-2-one
- Aminocaproic lactam
- Epsilon-Caprolactam
Caprolactam | |
| |
| Formula | C6H11NO |
| Structure | |
| Description | White, crystalline solid or flakes with an unpleasant odor, hygroscopic. |
| Uses | Manufacture synthetic fibers of the polyamide type (perlon), solvent for high mol wt polymers. |
| Registry Numbers and Inventories. | |
| CAS | 105-60-2 |
| EC (EINECS/ELINCS) | 203-313-2 |
| EC Index Number | 613-069-00-2 |
| EC Class | Harmful; Irritant |
| EC Risk Phrase | R 20/22 36/37/38 |
| RTECS | CM3675000 |
| RTECS class | Tumorigen; Mutagen; Reproductive Effector; Human Data; Primary Irritant |
| Merck | 13,1767 |
| Beilstein/Gmelin | 106934 |
| Beilstein Reference | 5-21-06-00444 |
| Swiss Giftliste 1 | G-2175 |
| Canada DSL/NDSL | DSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| New Zealand | Listed |
| Japan ENCS (MITI) | Listed |
| Korea ECL | Listed |
| Properties. | |
| Formula | C6H11NO |
| Formula mass | 113.16 |
| Melting point, °C | 68 - 70 |
| Boiling point, °C | 266.9 |
| Vapor pressure, mmHg | 1 (60 C) |
| Vapor density (air=1) | 3.91 |
| Saturation Concentration | 1.32 ppm (0.0001%) at 20 C (calculated) |
| Critical temperature | 506.9 |
| Critical pressure | 45 |
| Density | 1.022 g/cm3 |
| Solubility in water | Miscible |
| Viscosity | 9 cp @ 78C |
| Surface tension | 20 g/s2 |
| Refractive index | 1.4965 (20 C) |
| Heat of fusion | 15.2 kJ/mol |
| Heat of vaporization | 74.10 kJ/mol |
| Heat of combustion | -3604 kJ/mol |
| Hazards and Protection. | |
| Storage | Store in a cool, dry place. Store in a tightly closed container. |
| Handling | Wash thoroughly after handling. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Use only in a chemical fume hood. |
| 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. |
| Small spills/leaks | Wash area with soap and water. Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation. |
| Disposal code | 3 |
| Stability | Stable under normal temperatures and pressures. |
| Incompatibilities | Strong oxidizing agents, strong bases. |
| Decomposition | Nitrogen oxides, carbon monoxide, carbon dioxide. |
| Fire. | ||||
| Flash Point,°C | 152 | |||
| Autoignition, °C | 395 | |||
| Upper exp. limit, % | 8 | |||
| Lower exp. limit, % | 1.4 | |||
| 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. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam. | |||
| Hazards | Toxic oxides of nitrogen | |||
| Combustion products | Toxic oxides of nitrogen | |||
| NFPA | Health | 1 | ||
| Flammability | 1 | |||
| Reactivity | 0 | |||
| Health. | |
| Exposure limit(s) | NIOSH REL: Dust: TWA 1 mg/m3 ST 3 mg/m3 Vapor: TWA 0.22 ppm (1 mg/m3) ST 0.66 ppm (3 mg/m3) |
| Poison_Class | 4 |
| Exposure effects | Chronic ingestion may cause neurological symptoms. |
| Ingestion | May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed. |
| Inhalation | Causes respiratory tract irritation. Toxic if inhaled. |
| Skin | Causes skin irritation. May be absorbed through the skin in harmful amounts. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. May cause dermatitis. |
| Eyes | Vapors cause eye irritation. |
First aid |
|
| 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 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. |
| Transport. | ||
| USCG CHRIS Code | CLS | |
| USCG Compatatibility Group | 22 Caprolactam solution | |
| HS Code | 2933 71 00 | |
| Std. Transport # | 4941102 | |
| IMO Pollution Category | D | |