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Annex 1 - Categories of wastes to be controlled under the basel convention

Waste streams

Y 1 Clinical wastes, from medical care in hospitals, medical centres and clinics
Y 2 Wastes from the production and preparation of pharmaceutical products
Y 3 Waste medicines, drugs and wastes from pharmaceutical products
Y 4 Wastes from the production, formulation and use of biocides and phyto-pharmaceuticals
Y 5 Waste from the manufacture, formulation and use of wood preserving chemicals
Y 6 Wastes from the production, formulation and use of organic solvents
Y 7 Wastes from heat treatment and tempering operations containing cyanides
Y 8 Waste mineral oil, unfit for its originally intended use
Y 9 Hydrocarbon/water mixtures, emulsions
Y 10 Waste substances and articles containing polychlorinated biphenyls (PCBs) and/or polychlorinated terphenyls (PCTs) and/or polybrominated biphenyls (PBBs)
Y 11 Waste tarry residues arising from refining, distillation and pyrolytic processes
Y 12 Wastes from production, formulation and use of inks, dyes, pigments, paints, lacquers and varnish
Y 13 Wastes from the production, formulation and use of resins, latex, plastics, glues/adhesives
Y 14 Waste chemical substances arising from research and development or teaching activities and which are not identified and/or are new and whose effects on man and/or the environment are not known
Y 15 Wastes of an explosive nature not subject to other legislation
Y 16 Wastes from the production, formulation and use of photographic chemicals
Y 17 Wastes resulting from surface treatment and finishing of metals and plastics
Y 18 Residues arising from industrial waste disposal operations
Waste having as constituents
Y 19 Metal carbonyls
Y 20 Beryllium, beryllium compounds
Y 21 Hexavalent chromium compounds
Y 22 Copper compounds
Y 23 Zinc compounds
Y 24 Arsenic, arsenic compounds
Y 25 Selenium, selenium compounds
Y 26 Cadmium, cadmium compounds
Y 27 Antimony, antimony compounds
Y 28 Tellurium, tellurium compounds
Y 29 Mercury, mercury compounds
Y 30 Thallium, thallium compounds
Y 31 Lead, lead compounds
Y 32 Inorganic fluorine compounds excluding calcium fluoride
Y 33 Inorganic cyanides
Y 34 Acid solutions or acids in solid form
Y 35 Basic solutions or bases in solid form
Y 36 Asbestos (dust and fibres)
Y 37 Organic phosphorus compounds
Y 38 Organic cyanides
Y 39 Phenols: phenol compounds including chlorophenols
Y 40 Ethers
Y 41 Halogenated organic solvents
Y 42 Organic solvents excluding halogenated solvents
Y 43 All substances, polluted with polychlorinated dibenzo-furans
Y 44 All substances, polluted with polychlorinated dibenzo-p-dioxins
Y 45 Organohalogen compounds other than those substances referred to in this Annex.

Annex 2 - List of hazardous characteristics in accordance with the basel convention

Hazardous characteristics
United Nations class

Code number




Explosive substances or waste
An explosive substance or waste is a solid or liquid substance or waste (or a mixture of substances or wastes) which is in itself capable by chemical reaction of producing gas at such a temperature, pressure or speed as to cause damage to the surroundings.



Flammable liquids
Flammable liquids are liquids or mixtures of liquids containing solids in solution or suspension (for example paints, lacquers, varnishes, etc., but not including substances or wastes otherwise classified on account of their hazardous characteristics) which give off a flammable vapour at a temperature of not more than 60.5C, closed-cup test, or not more than 65.6C, open-cup test.



Flammable solids
Solids, or waste solids, other than those classed as explosives, which under conditions encountered in transport are readily combustible, or may cause or contribute to fire through friction.



Substances or wastes liable to spontaneous combustion
Substances or wastes which are liable to spontaneous heating under normal conditions encountered in transport, or to heating up on contact with air, and being then liable to catch fire.



Substances or wastes which, in contact with water, emit flammable gases
Substances or wastes which, by interaction with water, are liable to become spontaneously flammable or to give off flammable gases in dangerous quantities



Oxidising substances or wastes which, while in themselves not necessarily combustible, may, generally by yielding oxygen cause, or contribute to, the combustion of other materials.



Organic peroxides
Organic substances or wastes which contain the bivalent O-O structure and are thermally unstable substances which may undergo exothermic self-accelerating decomposition.



Poisonous substances (with acute action)
Substances or wastes liable either to cause death or serious injury or to harm human health if swallowed or inhaled or by skin contact.



Infectious substances
Substances or wastes containing viable micro-organisms or their toxins, which are known or suspected to cause disease in animals or humans.



Substances or wastes which, by chemical action, will cause severe damage when in contact with living tissue, or, in case of leakage, will materially damage, or even destroy, other goods or the means of transport; they may also cause other hazards.



Liberation of toxic gases in contact with air or water
Substances or wastes which, by interaction with air and water, are liable to give off toxic gases in dangerous quantities.



Toxic substances (with delayed or chronic action)
Substances or wastes which, if they are inhaled or ingested or if they penetrate the skin, may involve delayed or chronic effects, including carcinogenicity.



Ecotoxic substances
Substances or wastes which if released present or may present immediate or delayed adverse impacts to the environment by means of bioaccumulation and/or toxic effects upon biotic systems.



Substances, capable, by any means, after disposal, of yielding another material, e.g. leachate, which possesses any of the characteristics listed above.


Annex 3 - Disposal operations under the basel convention

A Operations which do not lead to the possibility of resource recovery, recycling, reclamation, direct re-use or alternative uses

D1 Deposit into or onto land, (i.e. landfill etc.)
D2 Land treatment (e.g. biodegradation of liquid or sludgy discards in soils etc.)
D3 Deep injection (e.g. injection of pumpable discards into wells, salt domes or naturally occurring repositories etc.)
D4 Surface impoundment (e.g. placement of liquid or sludge discards into pits, ponds, lagoons etc.)
D5 Specially engineered landfills (e.g. placement into lined, discrete cells, which are capped and isolated from one other and the environment etc.)
D6 Release into a water body except seas/oceans
D7 Release into seas/oceans including sea-bed insertion
D8 Biological treatment not specified elsewhere in this Annex which results in final compounds or mixtures which are discarded by means of any of the operations in Section A
D9 Physico-chemical treatment not specified elsewhere in this Annex which results in final compounds or mixtures which are discarded by means of any of the operations described in Section A (e.g. evaporation, drying, calcination, neutralisation, precipitation etc.)
D10 Incineration on land
D11 Incineration at sea
D12 Permanent storage (e.g. emplacement of containers in a mine etc.)
D13 Blending or mixing prior to submission to any of the operations in Section A
D14 Repackaging prior to submission to any of the operations in Section A
D15 Storage pending any of the operations in Section A (temporary storage).

B. Operations which may lead to resource recovery, recycling, reclamation, direct re-use or alternative uses
R1 Use as a fuel (other than in direct incineration) or other means to generate energy
R2 Solvent reclamation/regeneration
R3 Recycling/reclamation of organic substances which are not used as solvents
R4 Recycling/reclamation of metals and metal compounds
R5 Recycling reclamation of inorganic materials
R6 Regeneration of acids or bases
R7 Recovery of components used for pollution abatement
R8 Recovery of components from catalysts
R9 Used oil re-refining or other reuses of previously used oil
R10 Land treatment resulting in benefit to agriculture or ecological improvement
R11 Use of residual materials obtained from any of the operations numbered R1-R10
R12 Exchange of wastes for submission to any of the operations numbered in R1-R11
R13 Accumulation of materials intended for any operation described in Section B.


Annex 4 - List of toxic or dangerous substances and materials

According to the Annex to the EC Directive on toxic and dangerous waste of 20 March 1978 (78/319/EEC - O.J. L 84 of 31 March 1978, p. 43)

1 Arsenic; arsenic compounds
2 Mercury, mercury compounds
3 Cadmium; cadmium compounds
4 Thallium; thallium compounds
5 Beryllium; beryllium compounds
6 Chrome 6 compounds
7 Lead; lead compounds
8 Antimony; antimony compounds
9 Phenols; phenol compounds
10 Cyanides, organic and inorganic
11 Isocyanates
12 Organic-halogen compounds, excluding inert polymeric materials and other substances referred to in this list or covered by other Directives concerning the disposal of toxic or dangerous waste
13 Chlorinated solvents
14 Organic solvents
15 Biocides and phyto-pharmaceutical substances
16 Tarry materials from refining and tar residues from distilling
17 Pharmaceutical compounds
18 Peroxides, chlorates, perchlorates and azides
19 Ethers
20 Chemical laboratory materials, not identifiable and/or new, whose
effects on the environment are not known
21 Asbestos (dust and fibres)
22 Selenium; selenium compounds
23 Tellurium; tellurium compounds
24 Aromatic polycyclic compounds (with carcinogenic effects)
25 Metal carbonyls
26 Soluble copper compounds
27 Acids and/or basic substances used in the surface treatment of metals.


Annex 5 - Summary 1

Simple and practical scheme for the identification and classification of special wastes (e.g. Naples 1983) (excerpt)

(1) Consistency    
  - solid - liquid - sludgy
(2) Appearance/size of components    
  Powder Emulsion wet
  small particles oily dry
  medium particles water-based non-aqueous
  large particles other base not known
  not known not known  
(3) Main components/origin    
  organic (of chemical or petrochemical origin)    
  organic (of biological origin)    
  inorganic and organic    
  not known    
(4) Occurrence of    
  heavy metals    
  phenols and derivatives    
  cyanides and isocyanides    
  halogenated organic substances    
  organic solvents (non halogenated)    
  biocides, pharmaceuticals    
  tar residues    
  oxidising organic materials    
  none of those mentioned    
  not known    
(5) pH value of waste material    
  not known    
(6) Combustibility    
  readily ignitable    

Source: World Bank Technical Paper 93, Vol. I, p. 154 f.

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