| arsenic |
An N-type dopant often used to form the buried layer in a bipolar structure. Also used as an implant source in both bipolar and MOS processing. This element has both metallic and non-metallic properties and hence is frequently referred to as a metalloid. Because of its metalloid properties arsenic can be in compounds both in the anionic and the cationic form. Arsenic is extremely poisonous to human beings and to other living beings.
출처: www.st.com/stonline/press/news/glossary/glossary.h...
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| arsenic |
CAS Number: 7440-38-2. A solid, poisonous element that is commonly metallic steel-gray, crystalline, and brittle. Chemical symbol = As. Molecular weight = 74.92 g/mol. Learn More...
출처: www.pca.state.mn.us/gloss/glossary.cfm
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| arsenic trioxide |
CAS Number: 1327-53-3. A white or transparent solid in the form of glassy, shapeless lumps, or a crystalline powder that resembles sugar. It has no odor or taste. It is produced from by-products of copper smeltin. It is then used in the manufactore of other arsenic compounds which are used as wood preservatives, insecticides and herbicides. It is also used in metallurgical process and in the manufacture of glass and ceramics. Chemical formula = As2O3. Molecular weight = 197.84 g/mol.
출처: www.pca.state.mn.us/gloss/glossary.cfm
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| arsenic |
Year discovered: 1250 Atomic No.: 33 Symbol: As Atomic weight: 74.9216 Melting point: 817?C (28 atmospheres) The silver-gray metalloid is rarely found in nature in its elemental form and is basically recovered as a byproduct of processing ores. While knowledge of arsenic dates back to ancient Greece, it wasn't until the Middle Ages that its poisonous characteristics were described. Metallic arsenic was first produced in the 17th century by heating arsenic with potash and soap. Art
출처: www.findhealer.com/glossary/A.php3
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| arsenic |
A gray, brittle and highly poisonous metal. It is used as an alloy for metals, especially lead and copper, and is used in insecticides and weed killers. In its inorganic form, it is listed as a cancer-causing chemical under Proposition 65.
출처: www.sbcfire.org/hazmat/env_terms.asp
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