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*This document is like a lab demo—an example Certificate of Analysis (COA) that showcases what a COA looks like but may not match the latest batch in all its glory. Think of it as a chemistry experiment: close, but not quite the final reaction!
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Bulk Quote| IUPAC name | tungsten |
| canonical smiles | [W] |
| inchi | InChI=1S/W |
| inchi key | WFKWXMTUELFFGS-UHFFFAOYSA-N |
| molecular formula | W |
| synonyms | |
| Compound Description |
| Molecular Weight: | 183.84 g/mol |
| Hydrogen Bond Donor Count: | 0 |
| Hydrogen Bond Acceptor Count: | 0 |
| Rotatable Bond Count: | 0 |
| Exact Mass: | 183.950933 g/mol |
| Monoisotopic Mass: | 183.950933 g/mol |
| Topological Polar Surface Area: | 0 Ų |
| Heavy Atom Count: | 1 |
| Formal Charge: | 0 |
| Complexity: | 0 |
| Isotope Atom Count: | 0 |
| Defined Atom Stereocenter Count: | 0 |
| Undefined Atom Stereocenter Count: | 0 |
| Defined Bond Stereocenter Count: | 0 |
| Undefined Bond Stereocenter Count: | 0 |
| Covalently-Bonded Unit Count: | 1 |
| Compound Is Canonicalized: | Yes |
| hazard signal | Danger |
| hazard classes and categories | |
| precautionary statement codes | P210, P235, P240, P241, P280, P370+P378, P407, P410, P413, and P420 |
| hazard statements | |
| hazards summary | Tungsten is a naturally occurring element. It occurs in rocks and minerals combined with other chemicals, but never as a pure metal. Elemental tungsten is a white to steel gray metal (depending on the purity) that can be used in pure form or mixed with other metals to make alloys. Tungsten alloys tend to be strong and flexible, resist wear, and conduct electricity well. Tungsten is used in products such as x-ray tubes, light bulbs, high-speed tools, welding electrodes, turbine blades, golf clubs, darts, fishing weights, gyroscope wheels, phonograph needles, bullets, and armor penetrators. Tungsten is also used as a catalyst to speed up chemical reactions. Chemical compounds of tungsten are used for many purposes. Cemented tungsten carbide is a hard substance used to make grinding wheels and cutting or forming tools. Other tungsten compounds are used in ceramic pigments, as fire retardant coatings for fabrics, and as color-resistant dyes for fabrics.The TLV is recommended to protect against lung damage. Oral doses of soluble sodium tungsten tungstate dihydrate given to mice and rats were almost completely eliminated within 24 hours. Humans received large oral doses (200 mg/day) of soluble sodium tungstate over a 6-week period without adverse effects (compared to placebo controls). Tungsten resembles molybdenum. Excess absorption of tungsten may antagonize the action of molybdenum, an essential trace nutrient. Hard metal disease is believed to be caused by cobalt, which is fused with tungsten carbide in hard metal tools. Systemic effects from tungsten have not been reported after occupational exposure. A skin, eye, and respiratory tract irritant. See Tungsten carbide (cemented). |
