1,3-Dichloro-5,5-dimethylhydantoin
- Dactin
- Halane
- 1,3-Dichloro-5,5-dimethyl-2,4-Imidazolidinedione
1,3-Dichloro-5,5-dimethylhydantoin | |
| |
| Formula | C5H6Cl2N2O2 |
| Structure | |
| Description | White solid powder, mild chlorine odor. |
| Uses | Chlorinating agent, disinfectant, industrial deodorant, in water treatment, active ingredient of powder laundry bleaches. |
| Registry Numbers and Inventories. | |
| CAS | 118-52-5 |
| EC (EINECS/ELINCS) | 204-258-7 |
| EC Class | oxidizing, harmful, corrosive |
| EC Risk Phrase | R 22 34 41 |
| EC Safety Phrase | S 26 36/37/39 45 |
| RTECS | MU0700000 |
| RTECS class | Agricultural Chemical and Pesticide; Mutagen; Primary Irritant |
| UN (DOT) | 3261 |
| Merck | 13,3090 |
| Beilstein/Gmelin | 146013 |
| Beilstein Reference | 5-24-05-00373 |
| EPA OPP | 28501 |
| Swiss Giftliste 1 | G-6684 |
| Canada DSL/NDSL | DSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| New Zealand | Listed |
| Japan ENCS (MITI) | Listed |
| Korea ECL | Listed |
| Properties. | |
| Formula | C5H6Cl2N2O2 |
| Formula mass | 197.02 |
| Boiling point, °C | 215 |
| Decomposition point, °C | 212 |
| Vapor pressure, mmHg | 0.15 (25 C) |
| Vapor density (air=1) | 6.8 |
| Density | 1.5 g/cm3 (20 C) |
| Solubility in water | 2 g/L |
| Partition coefficient, pKow | 1.36 |
| Heat of vaporization | 45.1 kJ/mol |
| Hazards and Protection. | |
| Storage | 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. Store protected from moisture. |
| Handling | Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Do not allow contact with water. Keep from contact with moist air and steam. |
| 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. |
| 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. Provide ventilation. Do not get water inside containers. |
| Stability | Stable at room temperature in closed containers under normal storage and handling conditions. |
| Incompatibilities | Strong oxidizing agents, water. |
| Decomposition | Hydrogen chloride, nitrogen oxides, phosgene, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen. |
| Fire. | ||||
| Flash Point,°C | 84 | |||
| 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: Do NOT get water inside containers. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam. | |||
| Fire potential | This material is probably combustible. | |||
| Hazards | Combustion accompanied by evolution of chlorine @ 210 deg c. | |||
| NFPA | Health | 1 | ||
| Flammability | 0 | |||
| Reactivity | 0 | |||
| Health. | |
| Exposure limit(s) | NIOSH REL: TWA 0.2 mg/m3 ST 0.4 mg/m3 OSHA PEL: TWA 0.2 mg/m3 IDLH 5 mg/m3 |
| Poison_Class | 4 |
| Exposure effects | Rapid heart rate and rapid breathing are common. Severe exposure may cause cardiovascular collapse and respiratory arrest. Headache may develop. Agitation and anxiety may develop in patients with significant respiratory compromise. Chlorine (as hypochlorite) has been teratogenic in experimental animals. Mutations were detected using sperm morphology in mouse studies. |
| Ingestion | Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed. |
| Inhalation | Causes respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. |
| Skin | Causes skin irritation. |
| Eyes | Causes eye irritation. |
First aid |
|
| 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. |
| Transport. | ||
| UN number | 3261 | |
| Response guide | 154 | |
| HS Code | 2933 21 00 | |