Talc | |
| Formula | 3MgO.4SiO2.H2O |
| Description | Odorless, white powder. Crude talcs range in color from white to green, grey and brown. |
| Uses | Additive to clay in ceramic manufacture & paper coatings, for roofing materials. |
| Registry Numbers and Inventories. | |
| CAS | 14807-96-6 |
| EC (EINECS/ELINCS) | 238-877-9 |
| RTECS | WW2710000 |
| RTECS class | Tumorigen; Natural Product; Primary Irritant |
| Beilstein/Gmelin | 12537 (G) |
| RCRA | D009 |
| Swiss Giftliste 1 | G-6939 |
| Canada DSL/NDSL | DSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| New Zealand | Listed |
| Korea ECL | Listed |
| Properties. | |
| Formula | H2Mg3Si4O12 |
| Formula mass | 379.27 |
| Melting point, °C | 800 |
| Vapor density (air=1) | 5.7 |
| Density | 2.58-2.83 g/cm3 (20 C) |
| Solubility in water | Insoluble |
| Hazards and Protection. | |
| Storage | Store in a cool, dry place. Keep container closed when not in use. No special precautions indicated. |
| WHMIS | D2A |
| Handling | Wash hands before eating. Use only in a well ventilated area. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. |
| 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 minimize contact with skin. |
| 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 or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation. |
| Disposal code | 14 |
| Stability | Stable under normal temperatures and pressures. |
| Incompatibilities | Aluminum foil is unsuitable as a packing material in contact with mercury(ii)salts in presence of moisture, when vigorous amalgamation ensues. Avoid contact with strong oxidizers such as chlorine. |
| Decomposition | Irritating and toxic fumes and gases, silicon oxide. |
| Fire. | ||||
| Fire fighting | Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Material will not burn. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Substance is nonflammable; use agent most appropriate to extinguish surrounding fire. | |||
| Fire potential | This material is nonflammable | |||
| NFPA | Health | 1 | ||
| Flammability | 0 | |||
| Reactivity | 0 | |||
| Health. | |
| Exposure limit(s) | TLV: ppm; 2 mg/m3 as TWA (ACGIH 1993-1994). OSHA PEL: TWA 20 mppcf NIOSH REL: TWA 2 mg/m3 (resp) NIOSH IDLH: 1000 mg/m3 |
| Poison_Class | - |
| Exposure effects | Chronic inhalation can cause pneumoconiosis. |
| Ingestion | No hazard expected in normal industrial use. Ingestion of large amounts may cause gastrointestinal irritation. Low hazard for usual industrial handling. |
| Inhalation | Dust is irritating to the respiratory tract. Low hazard for usual industrial handling. |
| Skin | May cause mild skin irritation. |
| Eyes | Dust may cause mechanical irritation. |
First aid |
|
| Ingestion | If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Wash mouth out with water. Get medical aid if irritation or symptoms occur. |
| Inhalation | Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear. |
| Skin | Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. |
| Eyes | Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid. |
| Transport. | ||
| HS Code | 2526 20 00 | |