| BENTONITE
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PRODUCT IDENTIFICATION |
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| CAS NO. | 1302-78-9 |
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| EINECS NO. | ||
| FORMULA | Al2H2O6Si | |
| MOL WT. | 180.06 | |
| H.S. CODE | 2508.10 | |
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TOXICITY |
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| SYNONYMS | Taylorite; Wilkinite; Alumino silicate; | |
| Sodium montmorillonite; | ||
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SMILES |
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | gray powder or granules | |
| MELTING POINT | ||
| BOILING POINT | 2760 C | |
| SPECIFIC GRAVITY | 2.5 (- 6.5) | |
| SOLUBILITY IN WATER | Insoluble (Forms a colloidal suspension ) | |
| pH | 8.0 - 8.5 | |
| VAPOR DENSITY | ||
| AUTOIGNITION |
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| NFPA RATINGS | Health: 1; Flammability: 0; Reactivity: 0 | |
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REFRACTIVE INDEX |
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| FLASH POINT | Not considered to be a fire hazard | |
| STABILITY | Stable under ordinary conditions | |
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GENERAL DESCRIPTION & APPLICATIONS |
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| Bentonite is an absorbent aluminum silicate (hydrated) clay formed from volcanic ash decomposition and largely composed of montmorillonite and beidellite. It is used in various adhesives, cements, and ceramic fillers. It is used in the making of fillers, sizings, and dressings in construction, in clarifying water and wine, in purifying sewage, and in the wet end paper, ceramics, plastics, and rubber industries. Other appliactiona include in in animal feed, asphalt emulsion, brick, detergent. Special grades are used in dental materials, foods and cosmetics. The pharmaceutical industry uses it as a suspending agent. Highly absorbent, bentonite is much used in foundry work for facing the molds and preparing the molding sands for casting metals. The less absorbent bentonites are used chiefly in the oil industry, e.g., as filtering and deodorizing agents in the refining of petroleum and, mixed with other materials, as drilling muds to protect the cutting bit while drilling. | ||
| SALES SPECIFICATION | ||
| SiO2 |
67.0% nin |
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| Al2O3 |
15.5% min |
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| TRANSPORTATION | ||
| PACKING | 50kgs in bag | |
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HAZARD CLASS |
Not regulated | |
| UN NO. | ||
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OTHER INFORMATION |
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