A62D1/00	7	Fire-extinguishing compositions; Use of chemical substances in extinguishing fires (fireproof paints C09D5/18; fireproofing materials C09K21/00)	A62D1/00	A62D1/00		466
A62D1/0007	8	{Solid extinguishing substances}	A62D1/00	A62D1/00		259
A62D1/0014	9	{Powders; Granules}	A62D1/00	A62D1/00		990
A62D1/0021	9	{Microcapsules}	A62D1/00	A62D1/00		355
A62D1/0028	8	{Liquid extinguishing substances (A62D1/0092 takes precedence)}	A62D1/00	A62D1/00		278
A62D1/0035	9	{Aqueous solutions}	A62D1/00	A62D1/00		426
A62D1/0042	10	{"Wet" water, i.e. containing surfactant}	A62D1/00	A62D1/00		475
A62D1/005	9	{Dispersions; Emulsions}	A62D1/00	A62D1/00		422
A62D1/0057	9	{Polyhaloalkanes (A62D1/005 takes precedence)}	A62D1/00	A62D1/00		433
A62D1/0064	8	{Gels; Film-forming compositions}	A62D1/00	A62D1/00		683
A62D1/0071	8	{Foams}	A62D1/02	A62D1/00		1037
A62D1/0078	9	{containing proteins or protein derivatives}	A62D1/02	A62D1/00		171
A62D1/0085	9	{containing perfluoroalkyl-terminated surfactant}	A62D1/02	A62D1/00		287
A62D1/0092	8	{Gaseous extinguishing substances, e.g. liquefied gases, carbon dioxide snow (freons or halons A62D1/005)}	A62D1/00	A62D1/00		288
A62D1/06	8	containing gas-producing, chemically-reactive components	A62D1/06	A62D1/06		816
A62D3/00	7	Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances (consuming noxious gases by combustion F23G7/06)<br><br><u>NOTE</u><br><br>This group does not cover:<br> chemical or physico-chemical type processes where eradicating or diminishing the dangerousness of harmful chemical substances produces useful products, e.g. cement. These types of processes are covered by the appropriate subclass for making the specific product. However, in situations where processes for making products include a subset of process steps with eradicating or diminishing the dangerousness of a harmful chemical substance as its fundamental goal, and this subset is in itself novel and unobvious, this subset is covered by group A62D3/00.  <br>In this group the following term is used with the meaning indicated: "harmful chemical substances" are chemical waste substances which are too hazardous or toxic to be discarded in an ordinary municipal landfill.  <br>  In this group, the first place priority rule is applied, i.e. at each hierarchical level, in the absence of an indication to the contrary, classification is made in the first appropriate place.  <br>In this group, it is desirable to add the indexing code(s) of group A62D2101/00 relating to the nature of the harmful chemical substance.<br>This group covers<br> Processes for combatting harmful chemical substances or agents or materials containing harmful chemical agents. These processes can be chemical or physico-chemical, e.g. use of special chemical reagents for chemical fixing, and result in the decomposition or transformation of the agents in harmless or less harmful substances, because of the change in its chemical constitution. These processes can comprise the step of dissolving or dispersing the hazardous substances in water for the purpose of treating them or the step of producing a gaseous product from a non-gaseous hazardous substance.<br> Treatment of specific hazardous substances in sludge, e.g. residue from industrial processes, with the exception of sludge from (municipal) sewage treatment.<br>This group does not cover:<br>Chemical or biological purification of smoke or fumes, covered by B01D53/34<br>Disposal of solid waste, destroying solid waste or transforming solid waste into something useful or harmless, covered by B09B<br>Chemical reclamation of contaminated soil, covered by B09C1/08<br>Treatment of waste water, sewage or sludge, covered by C02F<br>Incorporating waste or residues in a glass or vitreous matrix covered by C03C1/00<br>Incorporating waste or residues in cement or cementitious compositions, covered by C04B7/24<br>Use of waste materials as filler for mortars, concrete or the like covered by C04B18/04<br>Destructive distillation, covered by C10B53/00<br>Obtaining metals from residues or scrap, covered by C22B<br>Consuming waste by combustion, covered by F23G<br>Treatment of radioactively-contaminated waste, covered by G21F9/00	A62D3/00	A62D3/00		145
A62D3/02	8	by biological methods, i.e. processes using enzymes or microorganisms	A62D3/02	A62D3/02		1327
A62D3/10	8	by subjecting to electric or wave energy or particle or ionizing radiation	A62D3/10	A62D3/10		26
A62D3/11	9	Electrochemical processes, e.g. electrodialysis	A62D3/11	A62D3/11		79
A62D3/115	10	Electrolytic degradation or conversion	A62D3/115	A62D3/115		74
A62D3/13	9	to sonic energy	A62D3/13	A62D3/13		37
A62D3/15	9	to particle radiation, e.g. electron beam radiation	A62D3/15	A62D3/15		19
A62D3/17	9	to electromagnetic radiation, e.g. emitted by a laser	A62D3/17	A62D3/17		308
A62D3/172	10	Gamma rays, i.e. radiation having a wavelength of about 0.003nm to 0.03 nm	A62D3/172	A62D3/172		8
A62D3/174	10	X-rays, i.e. radiation having a wavelength of about 0.03nm to 3nm	A62D3/174	A62D3/174		6
A62D3/176	10	Ultraviolet radiations, i.e. radiation having a wavelength of about 3nm to 400nm	A62D3/176	A62D3/176		161
A62D3/178	10	Microwave radiations, i.e. radiation having a wavelength of about 0.3 cm to 30cm	A62D3/178	A62D3/178		65
A62D3/19	9	to plasma	A62D3/19	A62D3/19		127
A62D3/20	8	by hydropyrolysis or destructive steam gasification, e.g. using water and heat or supercritical water, to effect chemical change	A62D3/20	A62D3/20		96
A62D3/30	8	by reacting with chemical agents	A62D3/30	A62D3/30		765
A62D3/32	9	by treatment in molten chemical reagent, e.g. salts or metals	A62D3/32	A62D3/32		142
A62D3/33	9	by chemical fixing the harmful substance, e.g. by chelation or complexation	A62D3/33	A62D3/33		992
A62D3/34	9	Dehalogenation using reactive chemical agents able to degrade	A62D3/34	A62D3/34		245
A62D3/35	9	by hydrolysis	A62D3/35	A62D3/35		231
A62D3/36	9	Detoxification by using acid or alkaline reagents	A62D3/36	A62D3/36		473
A62D3/37	9	by reduction, e.g. hydrogenation	A62D3/37	A62D3/37		388
A62D3/38	9	by oxidation; by combustion	A62D3/38	A62D3/38		828
A62D3/40	8	by heating to effect chemical change, e.g. pyrolysis	A62D3/40	A62D3/40		340
A62D5/00	7	Composition of materials for coverings or clothing affording protection against harmful chemical agents	A62D5/00	A62D5/00		497
A62D7/00	7	Composition of materials for transparent parts of gas-masks, respirators, breathing bags, or helmets	A62D7/00	A62D7/00		38
A62D7/02	8	Clear-view sheets which prevent the formation of water drops or ice	A62D7/02	A62D7/02		3
A62D9/00	7	Composition of chemical substances for use in breathing apparatus	A62D9/00	A62D9/00		168
A62D2101/00	7	Harmful chemical substances made harmless, or less harmful, by effecting chemical change<br><br><u>NOTE</u><br><br>The indexing codes of group A62D2101/00 are to be used for identifying the origin or chemical nature of the harmful chemical substances which are made harmless or less harmful by processes already classified as such in groups A62D3/02&#160;-&#160;A62D3/40<br>When indexing a substance in groups A62D2101/02&#160;-&#160;A62D2101/08, indexing according to its chemical structure is also made in one or more of groups A62D2101/20&#160;-&#160;A62D2101/40, if of interest 	A62D101/00	A62D101/00		11
A62D2101/02	8	Chemical warfare substances, e.g. cholinesterase inhibitors	A62D101/02	A62D101/02		481
A62D2101/04	8	Pesticides, e.g. insecticides, herbicides, fungicides or nematocides	A62D101/04	A62D101/04		581
A62D2101/06	8	Explosives, propellants or pyrotechnics, e.g. rocket fuel or napalm	A62D101/06	A62D101/06		140
A62D2101/08	8	Toxic combustion residues, e.g. toxic substances contained in fly ash from waste incineration	A62D101/08	A62D101/08		411
A62D2101/20	8	Organic substances	A62D101/20	A62D101/20		707
A62D2101/22	9	containing halogen	A62D101/22	A62D101/22		1172
A62D2101/24	9	containing heavy metals	A62D101/24	A62D101/24		383
A62D2101/26	9	containing nitrogen or phosphorus	A62D101/26	A62D101/26		745
A62D2101/28	9	containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen	A62D101/28	A62D101/28		1290
A62D2101/40	8	Inorganic substances	A62D101/40	A62D101/40		200
A62D2101/41	9	Inorganic fibres, e.g. asbestos	A62D101/41	A62D101/41		210
A62D2101/43	9	containing heavy metals, in the bonded or free state	A62D101/43	A62D101/43		882
A62D2101/45	9	containing nitrogen or phosphorus	A62D101/45	A62D101/45		243
A62D2101/47	9	containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen	A62D101/47	A62D101/47		181
A62D2101/49	9	containing halogen	A62D101/49	A62D101/49		170
A62D2203/00	7	Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances	CPCONLY	A62D2203/00		4
A62D2203/02	8	Combined processes involving two or more distinct steps covered by groups A62D3/10&#160;-&#160;A62D3/40	CPCONLY	A62D2203/02		290
A62D2203/04	8	Combined processes involving two or more non-distinct steps covered by groups A62D3/10&#160;-&#160;A62D3/40	CPCONLY	A62D2203/04		203
A62D2203/10	8	Apparatus specially adapted for treating harmful chemical agents; Details thereof	CPCONLY	A62D2203/10		460
