A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTSCHEMICAL MATERIALS FOR USE IN BREATHING APPARATUSThe following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups: A62D1/02 covered by A62D1/0007, A62D1/0071A62D1/04 covered by A62D1/0071A62D1/08 covered by A62D1/0007-A62D1/0028, A62D1/0057, A62D1/0092In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. A62D1/00 A62D1/00Fire-extinguishing compositionsUse of chemical substances in extinguishing fires fireproof paints C09D5/18; fireproofing materials C09K21/00 A62D1/0007Solid extinguishing substances A62D1/0014Powders; Granules A62D1/0021Microcapsules A62D1/0028Liquid extinguishing substances A62D1/0092 takes precedence A62D1/0035Aqueous solutions A62D1/0042"Wet" water, i.e. containing surfactant A62D1/005Dispersions; Emulsions A62D1/0057Polyhaloalkanes A62D1/005 takes precedence A62D1/0064Gels; Film-forming compositions A62D1/0071Foams A62D1/0078containing proteins or protein derivatives A62D1/0085containing perfluoroalkyl-terminated surfactant A62D1/0092Gaseous extinguishing substances, e.g. liquefied gases, carbon dioxide snow freons or halons A62D1/005 A62D1/06containing gas-producing, chemically-reactive components A62D3/00Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances consuming noxious gases by combustion F23G7/06This group does not cover: 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. 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. 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. 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.This group covers 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. Treatment of specific hazardous substances in sludge, e.g. residue from industrial processes, with the exception of sludge from (municipal) sewage treatment.This group does not cover:Chemical or biological purification of smoke or fumes, covered by B01D53/34Disposal of solid waste, destroying solid waste or transforming solid waste into something useful or harmless, covered by B09BChemical reclamation of contaminated soil, covered by B09C1/08Treatment of waste water, sewage or sludge, covered by C02FIncorporating waste or residues in a glass or vitreous matrix covered by C03C1/00Incorporating waste or residues in cement or cementitious compositions, covered by C04B7/24Use of waste materials as filler for mortars, concrete or the like covered by C04B18/04Destructive distillation, covered by C10B53/00Obtaining metals from residues or scrap, covered by C22BConsuming waste by combustion, covered by F23GTreatment of radioactively-contaminated waste, covered by G21F9/00 A62D3/02by biological methods, i.e. processes using enzymes or microorganisms A62D3/10by subjecting to electric or wave energy or particle or ionizing radiation A62D3/11Electrochemical processes, e.g. electrodialysis A62D3/115Electrolytic degradation or conversion A62D3/13to sonic energy A62D3/15to particle radiation, e.g. electron beam radiation A62D3/17to electromagnetic radiation, e.g. emitted by a laser A62D3/172Gamma rays, i.e. radiation having a wavelength of about 0.003nm to 0.03 nm A62D3/174X-rays, i.e. radiation having a wavelength of about 0.03nm to 3nm A62D3/176Ultraviolet radiations, i.e. radiation having a wavelength of about 3nm to 400nm A62D3/178Microwave radiations, i.e. radiation having a wavelength of about 0.3 cm to 30cm A62D3/19to plasma A62D3/20by hydropyrolysis or destructive steam gasification, e.g. using water and heat or supercritical water, to effect chemical change A62D3/30by reacting with chemical agents A62D3/32by treatment in molten chemical reagent, e.g. salts or metals A62D3/33by chemical fixing the harmful substance, e.g. by chelation or complexation A62D3/34Dehalogenation using reactive chemical agents able to degrade A62D3/35by hydrolysis A62D3/36Detoxification by using acid or alkaline reagents A62D3/37by reduction, e.g. hydrogenation A62D3/38by oxidationby combustion A62D3/40by heating to effect chemical change, e.g. pyrolysis A62D5/00Composition of materials for coverings or clothing affording protection against harmful chemical agents A62D7/00Composition of materials for transparent parts of gas-masks, respirators, breathing bags, or helmets A62D7/02Clear-view sheets which prevent the formation of water drops or ice A62D9/00Composition of chemical substances for use in breathing apparatus A62D2101/00 A62D2101/00Harmful chemical substances made harmless, or less harmful, by effecting chemical changeThe 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 - A62D3/40When indexing a substance in groups A62D2101/02 - A62D2101/08, indexing according to its chemical structure is also made in one or more of groups A62D2101/20 - A62D2101/40, if of interest A62D2101/02Chemical warfare substances, e.g. cholinesterase inhibitors A62D2101/04Pesticides, e.g. insecticides, herbicides, fungicides or nematocides A62D2101/06Explosives, propellants or pyrotechnics, e.g. rocket fuel or napalm A62D2101/08Toxic combustion residues, e.g. toxic substances contained in fly ash from waste incineration A62D2101/20Organic substances A62D2101/22containing halogen A62D2101/24containing heavy metals A62D2101/26containing nitrogen or phosphorus A62D2101/28containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen A62D2101/40Inorganic substances A62D2101/41Inorganic fibres, e.g. asbestos A62D2101/43containing heavy metals, in the bonded or free state A62D2101/45containing nitrogen or phosphorus A62D2101/47containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen A62D2101/49containing halogen A62D2203/00Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances A62D2203/02Combined processes involving two or more distinct steps covered by groups A62D3/10 - A62D3/40 A62D2203/04Combined processes involving two or more non-distinct steps covered by groups A62D3/10 - A62D3/40 A62D2203/10Apparatus specially adapted for treating harmful chemical agentsDetails thereof