Chemistry

Subject classifications for chemistry.

A: General
C: Analytical Chemistry
D: Physical Chemistry
F: Inorganic Chemistry
H: Organic Chemistry
M: Medicinal Chemistry
Q: Physico-Chemical Constants
W: Mathematics Of Chemistry

A: General

Number	Sub heading
1	Bibliographies
2	Reference works: encyclopaedias, dictionaries etc.
4	Tables
5	Textbooks
6	Miscellanies, Festschriften, proceedings.
9	Methodology (always prefer specific topic number)
10	Symbols and language
11	Units and symbols
15	Chemical formulae and nomenclature
20	Equipment and maintenance; laboratories generally
100	Chemicals
102	Solvents: properties, preparation
120	Demonstration and experiment
150	Safety
260	Green Chemistry

Note: use HISTORY OF SCIENCE for works on history and philosophy of Chemistry.

C: Analytical Chemistry

Number	Sub heading
1-9	As Section A.
20	Qualitative methods in general
30	Quantitative methods in general
40	Micro and semimicro methods
45	Mechanical methods, including gravimetric analysis
50	Thermal analysis
60	Electrochemical analysis, including coulometry, electrophoresis and polarography
70	Electromagnetic methods
76	Mass spectrometry
100	Optical spectroscopy
102	Atomic emission spectroscopy, flame emission spectroscopy
104	Molecular spectroscopy
105	Spectrophtometry, incl. calorimetry
106	Luminescence spectroscopy, fluorescence spectrscopy
107	Infrared and raman spectroscopy
109	Spectroscopy based on refraction, interference, scattering
120	Non-optical spectroscopy
122	Ray and electron spectrscopy, incl. x-ray and gamma ray, mossbauer and x-ray photoelectron
123	Radiochemical spectroscopy
125	Mass spectrometry, mass spectrscopy
126	Nuclear magnetic resonance spectroscopy
127	Electron paramagnetic/spin resonance spectroscopy
140	Chromatography
141	Paper & thin-layer
142	Ion-exchange
144	Liquid; gas/liquid
145	Gas
146	Supercritical fluid
147	Size exclusion incl. gel permeation Chromatography (GPC) or gel filtration chromatography
148	Affinity chromatography

D: Physical Chemistry

Number	Sub heading
1-9	As Section A.
10	Physico-chemical calculations
20	Practical physical chemistry
30	Techniques of separation
70	Special techniques of observation and measurement
82	Microscopy and electron microscopy
100	Theoretical chemistry
102	Quantum Chemistry
110	Theory of atoms and molecules
112	Atomic nucleus
113	Atmoic structure
115	Valency, molecular structure, conformational analysis, molecular orbitals
120	Spectra
122	Atomic
125	Molecular (incl. Lasers)
127	Infra red and raman
130	Electronic, Magnetic circular dichoism (MCD)
133	Radio-frequency, NMR
136	Microwave
140	Theory of assemblies of atoms and molecules
142	Thermodynamics
144	Systems in equilibrium
146	Systems not in equilibrium
148	Statistical mechanics; statistical theory of thermodynamics
150	Theory of the states of matter
152	Gases
153	Liquids
155	Solids
156	Metals
160	Theory of rate processes, chemical kinetics
162	Rates of physical change; collisions, transport, diffusion, viscosity etc
165	Rates of chemical reactions
170	Electrical discharges in gases
180	Electrochemistry
182	Conductance, transport
185	Equilibria : electro-motive force, ionic equilibria, incl. pH
200	Structure in relation to phase
205	Crystallography (cf. D228, F230-238, H240)
206	Principles of structure determination
207	Crystal strucutre
208	Crystal physics
209	Crystal growth
215	Liquid structures
220	Physical properties in relation to phase
222	Gases
223	Liquids
225	Substances in solution
228	Crystals (prefer D 200-209)
230	Metals
235	Properties associated with phase transitions
236	Properties of interfaces and of substnaces absorbed on interfaces
238	Colloids
240	Physical properties in relation to molecular, liquid or crystal structure
242	Mechanical
243	Thermal, thermodynamic
245	Optical, other than spectral
246	Reflection, refraction, double refraction, dispersion
247	Optical activity
248	Molecular polarisability, scattering of light
250	Electrical
252	Dielectric behaviour
253	Electrical conductivity
255	Molecular dipole moments
257	Semi-conduction
260	Magnetic
265	Spectral
266	Absorption of light, including soft x-rays
267	Luminescence, phosphorescence
270	Diffraction
273	of x-rays
275	of electrons
276	of neutrons
280	Supramolecular chemistry
290	Polymer chemistry
292	Polymerisation, polycondensation
295	Structure of polymers
297	Physical properties of polymers
300	Study of chemical reactions (incl. catalysis)
310	Thermochemistry
320	Chemical equilibrium
322	Gaseous systems
325	Solutions
327	Heterogeneous systems
330	Rates of chemical reactions , kinetics, dynamics
332	Homogeneous gas reactions
335	Homogeneous reactions in solution
337	Heterogeneous reations
338	Chain reactions
350	Reactions of special types or in special conditions
352	Reactions in flames
353	Explosions
355	Reactions involving short-lived radicals
357	Polymerisation, polycondensation
360	Electrolysis, electro-deposition, electro-synthesis
362	Reactions in electric discharges
363	Radiation chemistry
365	Photochemical reactions
367	Chemistry of photography
370	Reactions at high temperature
375	Reactions at high pressures
380	Reactions in the solid state

F: Inorganic Chemistry

Number	Sub heading
1-7	General works
20	Preparative inorganic chemistry
30	Sources, classification and inter-relation of the elements
32	Astro-chemistry
35	Geo-chemistry
37	Mineralogical chemistry
40	The elements
42	Periodic classification
44	Isotopes
45	Radioactivity
47	Nuclear reactions
50	Chemistry of Elements as individuals or as Groups of the periodic table
55	Hydrogen
60	Elements of Group 0 – Inert gases, Helium, neon, argon, krypton, Xenon
61	Elements of Group I – Alkali metals, Lithium, sodium, Potassium, Rubidium, Caesium, and 87 Frankium,
62	Elements of Group II – Alkaline Earths, Calcium, Strontium, barium, radium, beryllium, Magnesium,
63	Elements of Group III –XII– Transition metals
64	Elements of Group IV – C, Si, Ti, Zr, Hf, Th, Ge, Sn, Pb.
65	Elements of Group V – N, P, V, Nb, Ta, Pa, As, Sb, Bi
66	Elements of Group VI – O, S, G, Mo, W, U, Np, Pu, Am, Gn, Se, Te, Po.
67	Elements of Group VII – F, Cl, Mn, Tc, Re, Br, I, At.
68	Elements of Group VIII – Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt.
70	Transitional elements
72	Rare-earth elements : lanthanides
75	Radioactive elements
77	Transuranic elements : actinides
80	Chemistry of groups of like compounds of different elements
82	Hydrides
84	Halides
86	Oxides
88	Acids
89	Bases
90	Sulphides
92	Nitrides
94	Carbides
96	Silicates
100	Compounds classified by structural type
105	Salts
110	Co-ordination compounds
115	Molecular compounds
120	Hydrogen-bond compounds
125	Inter-metallic compounds
130	Non-stoichiometric compounds
140	Inorganic polymers
150	Industrially important classes of elements and compounds
160	Metals
162	Ferrous
163	Non-ferrous
165	Light
170	Ceramics and refractories
180	Fuels
190	Water
200	Structure in inorganic chemistry
210	Inorganic molecules
212	Geometry, dimensions
213	Mechanical properties
214	Energies
216	Optical properties
217	Electric properties
218	Magnetic properties
230	Inorganic crystals
233	Mechanical properties
234	Thermal properties, energies
236	Optical properties
237	Electric properties
238	Magnetic properties
250	Metals
253	Mechanical properties
254	Thermal properties
256	Optical properties
257	Electric properties
258	Magnetic properties
300	Inorganic reactions : mechanism and theory

H: Organic Chemistry

Number	Sub heading
1-7	General Works ( as A 1-7 )
20	Preparative organic chemistry
22	Procedures for carrying out reactions
23	Directions for preparation of substances
30	Compounds classified by type of molecular frame, or series
32	Aliphatic compounds
35	Homocyclic compounds
37	Alicyclic
38	Aromatic
40	Heterocyclic compounds
50	Chemistry of functionally classified organic compounds
55	Hydrocarbons
60	Compounds of carbon, hydrogen and oxygen
61	Fullerenes
62	Hydroxy-compounds
65	Carbonyl compounds
67	Carboxyl compounds (incl. fatty acids)
70	Ethers
71	Oxonium salts
72	Anhydrides
80	Compounds containing other elements
82	Halogens
85	Sulphur, selenium, tellurium
87	Nitrogen
90	Phosphorus, arsenic, antimony, bismuth
92	Silicon, boron
95	Organo-metallic compounds
100	Chemistry of natural products and related synthetic compounds
105	Terpenes
110	Steroids (Sterols, Bile acids, Cardiac aglucones, Digitalis sapogenis, Sex hormones, Adrenal substances)
120	Carotenoids
122	Anthocyanins, flavones, catechins
125	Carbohydrates
126	Mono-, di-, tri-, and tetra-saccharoses
127	Polysaccharoses
130	Alkaloids
135	Chlorophyll, haematin
140	Pyrimidines, purines, nucleosides, nucleotides
145	Amino acids, peptides, protamines, histamines, proteins
150	Chemistry of industrially classified organic compounds
160	Oils, fats and waxes
170	Physiologically active compounds (drugs, vitamins, hormones, antibiotics, poisons, insecticides)
180	Dyes and pigments
190	Explosives
195	Plastics
200	Structure in organic chemistry
205	Stereochemistry, stereoisomerism
210	Physical properties of molecules in relation to structure : molecular dimensions, energies, elastic constants, electric and magnetic properties.
220	Special features of structure
222	Mesomerism, conjugation, hyperconjugation
223	Strain in rings
224	Steric effects
225	Hydrogen bonds
226	Molecular compounds
240	Structure of organic crystals
300	Organic reactions : descriptive treatment
305	Special classes of reactions
310	Molecular rearrangement
315	Aliphatic substitution, Walden inversion
317	Aromatic substitution, orientation
325	Free radicals
330	Polymerisation, polycondensation
335	Reactions with special reagents
337	Enzyme action
340	Reactions requiring special conditions
342	Electrolytic
345	Pyrolytic
347	Photochemical reactions
350	Organic reactions : physiochemical study, mechanism and theory of organic reactions
355	Special classes of reaction
357	Tautomerism
360	Molecular Rearrangement
365	Aliphatic substitution
367	Aromatic substitution
370	Elimination
372	Addition
373	Ionisation, heterolysis
375	Homolytic dissociation, free radicals
380	Polymerisation, polycondensation
387	Enzyme action
392	Electrolytic reactions
395	Pyrolytic reactions
397	Photochemical reactions

M: Medicinal Chemistry

Number	Sub heading
2	Reference
5	General works

Q: Physico-Chemical Constants

Number	Sub heading
2	Reference
4	Comprehensive tables
10	Tables of data on special topics
20	Nuclei and nuclear reactions
25	Atoms
30	Molecules (incl. molecular wave functions)
40	Crystals and molecules in crystals
50	Data classified by type of measurement
53	Mechanical properties
54	Thermochemical data
55	Electrochemical data
56	Optical data
57	Spectral data, NMR spectra
58	Electric and magnetic data, radiochemical data
70	Thermodynamic properties
75	Phase equilibria
77	Solubilities
80	Chemical equilibria
90	Rates of reactions

W: Mathematics Of Chemistry

Number	Sub heading
1-6	General Works (as A 1-6)
7	Computers in chemistry