| Product Identification | Back to Contents | 【Product Name】
Limestone | 【Synonyms】
Calcite
Chalk
Limestone
Marble | 【CAS】
471-34-1 | 【Formula】
CCaO3 | 【Molecular Weight】
100.09 | 【EINECS】
207-439-9 | 【RTECS】
FF9335000 | 【RTECS Class】
Primary Irritant | 【Merck】
13,1658 | 【Beilstein/Gmelin】
8544 (G) |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
white powder. Odorless. | 【Solubility in water】
Insoluble | 【Melting Point】
825 | 【Density】
2.93 g/cm3 | 【Heat Of Vaporization】
| 【Usage】
Used to produce viscous solutions or dispersions, to impart body, improve consistency, or stabilize emulsions, including suspending and bodying agents, setting agents, jellying agents, and bulking agents. Stabilizers and thickeners, from table. |
| First Aid Measures | Back to Contents | 【Ingestion】
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid. | 【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. 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 cool, dry, well-ventilated area away from incompatible substances. Keep away from strong acids. | 【Handling】
Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. |
| Hazards Identification | Back to Contents | 【Inhalation】
Low hazard for usual industrial handling. Excessive inhalation may cause minor respiratory irritation. | 【Skin】
Causes skin irritation. Chronic ingestion may cause hypercalcemia, alkalosis, and kidney damage. May also produce milk-alkali syndrome characterized by neurological symptoms such as irritability, lethargy, stupor, and coma. | 【Eyes】
May cause eye irritation. | 【Ingestion】
Ingestion of large amounts may cause gastrointestinal irritation. Expected to be a low ingestion hazard. | 【EC Safety Phrase】
S 22 24/25 |
| 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 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. | 【Exposure Effects】
Chronic ingestion may cause hypercalcemia, alkalosis, and kidney damage. May also produce milk-alkali syndrome characterized by neurological symptoms such as irritability, lethargy, stupor, and coma. | 【Poison Class】
- |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
825 | 【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. Non-combustible, substance itself does not burn but may decompose upon heating to produce irritating, corrosive and/or toxic fumes. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. |
| Accidental Release Measures | Back to Contents | 【Small spills/leaks】
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation. |
| Stability and Reactivity | Back to Contents | 【Disposal Code】
14 | 【Stability】
Stable under normal shipping and handling conditions. | 【Incompatibilities】
Will ignite on contact with fluorine; incompatible with acids, alum, ammonium salts and mercury + hydrogen. | 【Decomposition】
Calcium oxide. |
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