Difference between revisions of "Chrysotile"
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A fibrous mineral composed of hydrated magnesium silicate. Chrysotile is the most widely used type of [[asbestos]] fiber, accounting for about 95% of the world's usage most of which comes from Quebec. Chrysotile fibers are white and have a soft, silky texture. They have excellent flexibility and spinning properties. Chrysotile fibers are used to reinforce polymers and as heat resistant textiles. Because the inhalation of chrysotile fibers causes lung cancer, its use is regulated in the U.S. and banned in Australia and the European Union. | A fibrous mineral composed of hydrated magnesium silicate. Chrysotile is the most widely used type of [[asbestos]] fiber, accounting for about 95% of the world's usage most of which comes from Quebec. Chrysotile fibers are white and have a soft, silky texture. They have excellent flexibility and spinning properties. Chrysotile fibers are used to reinforce polymers and as heat resistant textiles. Because the inhalation of chrysotile fibers causes lung cancer, its use is regulated in the U.S. and banned in Australia and the European Union. | ||
| − | + | [[[SliderGallery rightalign|chrysotileRS.jpg~Raman]]] | |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
asbestos; white asbestos; serpentine; hair of gold (Gr.); clinochrysotile (monoclinic form); orthochrysotile (orthorhombic form); parachrysotlie (orthorhombic form); chrysotiel (Ned.); crisótilo (Port.); Chrysotil (Deut.) | asbestos; white asbestos; serpentine; hair of gold (Gr.); clinochrysotile (monoclinic form); orthochrysotile (orthorhombic form); parachrysotlie (orthorhombic form); chrysotiel (Ned.); crisótilo (Port.); Chrysotil (Deut.) | ||
| − | + | == Risks == | |
| − | + | * Noncombustible. Unaffected by heat. | |
| + | * Carcinogenic. | ||
| + | * Highly toxic by inhalation of dust. | ||
| + | * Skin contact causes irritation. | ||
| + | * NIH: [https://pubchem.ncbi.nlm.nih.gov/compound/Chrysotile Information sheet] | ||
| − | + | ==Physical and Chemical Properties== | |
| − | Cross section is polygonal or circular. Tensile strength = 80,000-200,00 psi | + | * Fiber length = 12-300 mm (0.5 - 12 inches) |
| − | + | * Diameter = 300-350 angstroms. | |
| − | Resistant to alkalis. Attacked by dilute acids. | + | * Cross section is polygonal or circular. |
| + | * Tensile strength = 80,000-200,00 psi | ||
| + | * Resistant to alkalis. | ||
| + | * Attacked by dilute acids. | ||
{| class="wikitable" | {| class="wikitable" | ||
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! scope="row"| Density | ! scope="row"| Density | ||
| − | | 2.2 | + | | 2.2 g/ml |
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! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
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| − | == | + | ==Resources and Citations== |
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 70 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 70 | ||
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* ''Identification of Textile Materials'', The Textile Institute, Manchester, England, 1985 | * ''Identification of Textile Materials'', The Textile Institute, Manchester, England, 1985 | ||
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "chrysotile." | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "chrysotile." Accessed 7 Sept. 2005 . |
| − | * Wikipedia | + | * Wikipedia: http://en.wikipedia.org/wiki/Chrysotile (Accessed Sept. 7, 2005) |
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | * ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | ||
Revision as of 09:44, 30 May 2022
Description
A fibrous mineral composed of hydrated magnesium silicate. Chrysotile is the most widely used type of Asbestos fiber, accounting for about 95% of the world's usage most of which comes from Quebec. Chrysotile fibers are white and have a soft, silky texture. They have excellent flexibility and spinning properties. Chrysotile fibers are used to reinforce polymers and as heat resistant textiles. Because the inhalation of chrysotile fibers causes lung cancer, its use is regulated in the U.S. and banned in Australia and the European Union.
Synonyms and Related Terms
asbestos; white asbestos; serpentine; hair of gold (Gr.); clinochrysotile (monoclinic form); orthochrysotile (orthorhombic form); parachrysotlie (orthorhombic form); chrysotiel (Ned.); crisótilo (Port.); Chrysotil (Deut.)
Risks
- Noncombustible. Unaffected by heat.
- Carcinogenic.
- Highly toxic by inhalation of dust.
- Skin contact causes irritation.
- NIH: Information sheet
Physical and Chemical Properties
- Fiber length = 12-300 mm (0.5 - 12 inches)
- Diameter = 300-350 angstroms.
- Cross section is polygonal or circular.
- Tensile strength = 80,000-200,00 psi
- Resistant to alkalis.
- Attacked by dilute acids.
| Composition | Mg3Si2O5(OH)4 |
|---|---|
| CAS | 12001-29-5 |
| Mohs Hardness | 2.5-3.0 |
| Density | 2.2 g/ml |
| Molecular Weight | mol. wt. = 554 |
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 70
- Identification of Textile Materials, The Textile Institute, Manchester, England, 1985
- Encyclopedia Britannica, http://www.britannica.com Comment: "chrysotile." Accessed 7 Sept. 2005 .
- Wikipedia: http://en.wikipedia.org/wiki/Chrysotile (Accessed Sept. 7, 2005)
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998