C Chemistry C38E C Chemistry Chemistry C * Chemical phenomena and the associated human activities Science of science of chemistry C29 X focused upon them, treated at the most general level. C2A * For applied chemistry, see Process industrial technology . Philosophy of chemistry (in Class U/V). An alternative location (not C2L X . Scientific method in chemistry * recommended) for applied chemistry is provided at CY Methodology in the most abstract sense. * for libraries wishing to collocate the technology with For practical methods and procedures, see C36. chemistry in Class C. C2M . Mathematics in chemistry C2 . Common subdivisions C2V J .. Topology in chemistry * Add to C2 numbers 2/9 in Auxiliary Schedule 1 with C2X . Statistics & probability in chemistry the same additions & modifications as in AY2 2/9; eg General operations & agents in chemistry C22 .. Forms of presentation * Add to C numbers & letters 2YM/82D following AY, C23 G ... Serials with the modifications indicated at C33/34. P ... Technical data C2Y Q . Organization & management of work in chemistry .. Persons in the subject QS .. Operational research C24 ... Chemists * See also Biography C29 2 C33 Common properties C .... Profession of chemistry D . Distribution * For education & training, see C26 A. W . Continuity C25 .. Organizations in chemistry X . Conditions L .. Communication & information in chemistry Y5 .. Electric field LO ... Terminology YG .. Systems characteristics * For nomenclature, see compounds CGH 25L O. C34 . Theoretical chemistry P ... Documentation in chemistry * As distinct from practical chemistry. Classify more VA .... Information services in chemistry specifically if possible. The term is sometimes used VB ..... Computerized information services as synonymous with quantum chemistry (see C26 A .. Education & training in chemistry C34 CV). * Alternative (not recommended) to locating in * An alternative location (not recommended) is given Education at JKT C. at C8B. C27 .. History of chemistry * Add to C34 letters B/D following AY8 with the C ... Alchemy following modification: D .... Transmutation .. Particular theories * E .... Philosophers’ stone Theories particular to a given chemical G ... Phlogiston theory phenomenon go with that phenomenon. * See also Combustion CDV P CV ... Quantum chemistry C29 2 .. Biography of chemists N . Social aspects of chemistry, chemistry & society C36 . Practical chemistry, laboratory practice * Add to C29 N letters A/Y following K so far as * For bulk processing of materials, see Process applicable. industrial technology VL. R . Research .. Unwanted effects in chemical work * Activity aimed at extending the current corpus of C37 ... Work hazards, accidents (chemical work), safety knowledge about chemical phenomena. measures, protective measures * For theoretical chemistry, see C34. DV .... Warning systems * Add to C29 R letters B/T following AY3 2; eg, ES .... Protective equipment RC .. Methodology EU ..... Protective clothing X . Science of science of chemistry EV * In the context of scientific disciplines this area of ..... Specific items * Arrange A/Z; eg discourse has been termed (particularly in Europe) "science of science" and connotes the abstract study of EVF A ...... Facemasks the science as compared with its empirical study and EVF U ...... Fume cupboards, fume hoods practice. The external mental environment within which J .... Pollution hazards (Practical chemistry) the whole discipline of chemistry is viewed. MG .... Dangerous materials (Practical chemistry) * General explanatory texts, elementary or advanced, N ..... Specific substances which detail what chemistry and chemical phenomena C38 E .... Human error are about should be classed at C above. * For social aspects of chemistry, see C29 N. * Add to C29 X numbers & letters 5/S following AY2 9X; * Add to C2 letters A/X following A in AA/AX; eg 21 C3B C68I Equipment & materials Chemistry C Chemistry C Practical chemistry C36 Practical chemistry C36 Unwanted effects in chemical work Equipment & materials C3B . .Human error C38 E .Equipment C3U . .Windows C4T SW C3B Equipment & materials (together) . Operations on equipment & materials C5X . Reagents * D .. Design Substances used to produce a characteristic reaction in analysis or experiments in order to detect, measure, F .. Installation & use etc or otherwise examine other substances. K .. Testing * Reagents serving a particular investigating technique * For calibration, see Instruments C43 BW go with the technique; eg Precipitation agents N .. Control (of operations on equipment & materials) C8K T5X; Buffers C8U HY5 X. P ... Intelligent control devices .. Properties * See also Smart materials C3T V A ... Purity C3C .. Handling C ... Grades of reagent H ... Holding, supporting CL .... Analytical grades H3U .... Supports CM .... Commercial grades, crude grades I ..... Specific supports, A/Z .. Operations on reagents ICL ...... Clamps E ... Sampling ITR ...... Tripods * Obtaining a small quantity of a substance which is J ... Joining truly representative of the whole. K ... Closing E37 .... Sampling points, sampling errors M .... Packing material, caulking E3U .... Equipment Q .... Seals, stoppers ER .... Dry techniques . Properties of equipment & materials ES .... Wet techniques C3K GP .. Heat properties (Equipment & materials), thermal ET .... Samples properties (Equipment & materials) EU ..... Primary standard samples C3L .. Chemical properties (Equipment & materials) * Used as unit reference materials. C3R . Materials (Practical chemistry) * For specific standards, see property, etc; eg .. Kinds of materials by composition acidimetric standards, oxidation standards. C3T G ... Glass (Equipment & materials) .. Reagents by activity/constitution * H ... Ceramics (Equipment & materials) Add to C5X letters G/O following C; eg J ... Plastics (Equipment & materials) HCA ... Catalysts (Reagents) .. Kinds of materials by function IA ... Acids (Reagents) * For reagents, see C5X O ... Organic reagents S ... Barrier materials T .. Reagents special to a given class * T ... Refractories Notation reserved for use when required. V ... Smart materials C62 Investigative techniques in chemistry * Applied to chemical phenomena in general; for C3U . Equipment, apparatus, plant techniques applied specifically to the handling and TG .. Glassware preparation of substances in experiment and analysis, C3X .. Chemical laboratories see C8E. C4 .. Instruments & instrumentation in chemistry C63 . Data handling, data processing * For intelligent instruments, see C3B P C64 B . Automated methods C43 BW ... Calibration C . Computer techniques in chemistry C45 ... Components D .. Computer programs * For computers see C64 C E .. Named computer systems C48 .... Control instruments, control systems * Including named pieces of computer equipment. .... Kinds of components by energy system . By scale C4A C ..... Electrical & electronic instrumentation C67 .. Microtechniques, microchemical techniques, * For computers, see C64 C microchemistry .... Kinds of components by function * Procedures in which the weight of the sample is C4K ..... Switching devices very small (less than 1 mg or 1 ml) and often C4N ..... Indicators requiring especially small apparatus & microscopic C4T RY ..... Viewing devices, display devices observation. SW ...... Windows (instrumentation) C68 .. Ultramicroprocedures, nanotechniques I .. Semimicrotechniques, submicroprocedures * Procedures in which the weight of the sample is between 10/100 mgrm. 22 C68M Preparative techniques C8GN Chemistry C Chemistry C Practical chemistry C36 Preparative techniques C8E .. By scale By energy system involved . .Semimicrotechniques C68 I . .Heating C8E G . .Direct heating techniques C8E M C68 M ... Macrotechniques . .Blowlamps C8E OP * These are usually assumed; do not qualify specific techniques by this classmark and use this class C8E OQ ...... Oxidizing flames only for works on macrotechniques in general. OR ...... Reducing flames C69 .. Physical methods P .... Indirect heating techniques C6B ... Mechanical techniques PT ..... Baths C6G P ... Thermal techniques .. By thermal treatment C6H I ... Electrical techniques R ... Combustion C6I B ... Electronic techniques S ... Boiling C6K ... Radiation techniques T ... Roasting, calcining C6L .... Optical techniques By function in preparation .. Techniques by action on phenomenon * The operations below display a variety of C73 B ... Sampling relationships, sometimes serving one end and sometimes another; eg to dissolve one substance in C74 J ... Detection another is to combine them, but different solvents C76 ... Measurement may be used to separate them. Some operations also C7A ... Testing & evaluation are associated primarily with a particular state of C7C .... Monitoring matter (eg decanting of liquids) but are not C7F ... Simulation necessarily confined to that state. So one sequence of C7H ... Visualization & imaging operations is given below and compounding should C7I .... Imaging techniques reflect the particular relationship arising from a O ..... Nuclear magnetic resonance imaging particular application. C7M ... Spectroscopy C8G D . Production (Preparative chemistry) * See also Extraction C8I K C7P ... Tracer techniques DL .. Collection (Preparative chemistry) C7Q ... Techniques special to a context E . Containing, storing C82 Experimental chemistry * If distinguished from practical chemistry (C36). E3U .. Equipment * Add to C82 letters D/T following AY8 2; eg E3W C ... Containers D . Design of experiments E3W