Calcium silicate
- Calcium monosilicate
- Calcium hydrosilicate
- Calcium metasilicate
- Silicic acid, calcium salt
Calcium silicate | |
| |
| Formula | CaSiO3 |
| Structure | |
| Description | White powder. |
| Uses | Constituent of lime glass, portland cement, reinforcing filler in elastomers & plastics, absorbent for liquids, gases, vapors, as suspension agent, pigment & pigment extender, binder for refractory material, in chromatography, in road construction. |
| Registry Numbers and Inventories. | |
| CAS | 1344-95-2 |
| EC (EINECS/ELINCS) | 215-710-8 |
| RTECS | VV9150000 |
| RTECS class | Other |
| Merck | 12,1749 |
| Beilstein/Gmelin | 36889 (G) |
| Canada DSL/NDSL | DSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| New Zealand | Listed |
| Japan ENCS (MITI) | Listed |
| Korea ECL | Listed |
| Properties. | |
| Formula | Ca2O4Si |
| Formula mass | 116.16 |
| Melting point, °C | 1540 |
| Density | 2.9 g/cm3 (20 C) |
| Solubility in water | 100 mg/L |
| Hazards and Protection. | |
| Storage | Store in a cool, dry location. Keep container tightly closed. |
| Handling | Do not breath dust, avoid contact. Use material in a chemical hood. |
| Protection | Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots. |
| Respirators | NIOSH/MSHA approved respirator. |
| Small spills/leaks | Wear NIOSH/MSHA approved respirator, safety goggles and rubber gloves and boots. Sweep up and place in a bag and hold for waste disposal. Avoid raising dust, ventilate area and wash site after material pickup. |
| Stability | None specified. |
| Incompatibilities | Strong oxidizing agents. |
| Decomposition | Silicon oxide. |
| Fire. | ||||
| 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 agent most appropriate to extinguish fire. | |||
| Health. | |
| Exposure limit(s) | NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp) OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) |
| Exposure effects | |
| Ingestion | Nausea, vomiting and diarrhea are possible if ingested. |
| Inhalation | Cough, tachypnea, and wheezing are common after inhalation. |
| Skin | Redness, swelling and pain may occur. |
| Eyes | Irritants may cause swelling, redness and pain at any site, especially at mucous membranes. The mouth, nose, and eyes are susceptible to these effects. |
First aid |
|
| Ingestion | Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended. |
| Inhalation | If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention. |
| Skin | Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse. |
| Eyes | If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention. |
| Transport. |