chemistry
| Subheading | chemistry |
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| Record Type | Q |
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| Entry Version | CHEM |
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| Abbreviation | CH |
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| Scope Note | Used with chemicals, biological, and non-biological substances for their composition, structure, characterization, and properties; also used for the chemical composition or content of organs, tissue, tumors, body fluids, organisms, and plants. Excludes chemical analysis and determination of substances for which "analysis" is used; excludes synthesis for which "chemical synthesis" is used; excludes isolation and purification of substances for which "isolation & purification" is used. |
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| Annotation | subhead only; includes "chemical structure", "chemical composition", "chemical properties" or "chemical characterization"; includes "chemical composition" or "chemical content" of organs & tissues, organisms & plants; not for chemical analysis or determination ( = /
analysis) nor chemical synthesis or manufacture ( = /
chemical synthesis) nor chemical isolation or purification ( = /
isolation & purification); see MeSH scope note in Introduction; indexing policy: Manual 19.8.15; DF: /chem or /CH |
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| Online Note | search policy: Online Manual; use main heading/CH or CH (SH) or SUBS APPLY CH |
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| History Note | 91; used with Category A2-16, C4 & D 1991; A2-16, B1, B3-6, C4 & D 1992 forward |
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| Entry Term | chemical characterization |
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| Entry Term | chemical composition |
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| Entry Term | chemical content |
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| Entry Term | chemical properties |
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| Entry Term | chemical structure |
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| Date of Entry | 19900829 |
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| Revision Date | 20030724 |
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| Date Established | 19910101 |
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| Unique ID | Q000737 |
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