| Product Identification | Back to Contents | 【Product Name】
Diatomaceous earth | 【Synonyms】
Diatomaceous earth, natural
Diatomite, uncalcined
Infusorial earth
Uncalcinated diatomaceous earth | 【CAS】
61790-53-2 | 【EINECS】
310-127-6 | 【RTECS】
VV7311000 | 【RTECS Class】
Tumorigen | 【Beilstein/Gmelin】
NA |
| Physical and Chemical Properties | Back to Contents | 【Solubility in water】
Insoluble | 【Melting Point】
1710 | 【Boiling Point】
2200 | 【Density】
2.3 g/cm3 (20 C) | 【Usage】
Uncalcined diatomaceous earth is used as a filtration agent, a functional filler in paints, plastics, paper, rubber, adhesives, catalysts, agricultural chemicals, pharmaceuticals and other chemicals, and a mild abrasive in polishes and cleaners, such as metal and car polishes, nail polishes and toothpastes. It is also used in clarifying liquids and oils; as an efficient thermal insulator; in manufacture of heat insulators, fire brick, and fire- and acid-proof packing materials; as an absorbent; in absorbent dynamite; as a solid carrier in chromatography; pozzolanic admixture in concrete mixes; as a natural insecticide and as a carrier for insecticides; anticaking agent and a conditioner in the fertilizer industry. |
| First Aid Measures | Back to Contents | 【Ingestion】
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 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. | 【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】
Immediately 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 tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. | 【Handling】
Wash thoroughly after handling. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Avoid ingestion and inhalation. |
| Hazards Identification | Back to Contents | 【Inhalation】
Contains crystalline silica which may lead to respiratory abnormalities and silicosis. Causes irritation of the mucous membrane and upper respiratory tract. | 【Skin】
May cause skin irritation. | 【Eyes】
Dust may cause mechanical irritation. | 【Ingestion】
May cause irritation of the digestive tract. | 【EC Safety Phrase】
S 22 |
| 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 prevent skin exposure. | 【Respirators】
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use. | 【Exposure Effects】
Chronic exposure may cause lung damage. May cause silicosis-disabling pulmonary fibrosis characterized by fibrotic changes and miliary nodules in the lungs, dry cough, shortness of breath, emphysema, decreased chest expansion and increased susceptibility to tuberculosis. | 【Exposure limit(s)】
TLV: ppm; 10 mg/m3 as TWA (ACGIH 1993-1994). OSHA PEL: TWA 20 mppcf 80 mg/m3/%SiO2 NIOSH REL: TWA 6 mg/m3 NIOSH IDLH: 3000 mg/m3 | 【Poison Class】
- |
| Fire Fighting Measures | Back to Contents | 【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. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Use extinguishing media most appropriate for the 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. |
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| Company Name: |
Alfa Aesar |
| Tel: |
400-6106006 |
| Fax: |
021-67582001/03/05 |
| WebSite: |
http://chemicals.thermofisher.cn |
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