Annex I

​Harmful substances




1.0 Introduction

In order to fulfil the requirements of relevant parts of this Convention the following procedure shall be used by the Contracting Parties in identifying and evaluating harmful substances, as defined in Article 2, paragraph 7.

1.1 Criteria on the allocation of substances

The identification and evaluation of substances shall be based on the intrinsic properties of substances, namely:

- persistency;

- toxicity or other noxious properties;

- tendency to bio-accumulation,

as well as on characteristics liable to cause pollution, such as

- the ratio between observed concentrations and  ​​concentrations having no observed effect;

- anthropogenically caused risk of eutrophication;

- transboundary or long-range significance;

- risk of undesirable changes in the marine ecosystem and irreversibility or durability of effects;

- radioactivity;

- serious interference with harvesting of sea-foods or with other legitimate uses of the sea;

- distribution pattern (i.e. quantities involved, use pattern and liability to reach the marine environment);

- proven carcinogenic, teratogenic or mutagenic properties in or through the marine environment.

These characteristics are not necessarily of equal importance for the identification and evaluation of a particular substance or group of substances.

1.2  Priority groups of harmful substances

The Contracting Parties shall, in their preventive measures, give priority to the following groups of substances which are generally recognized as harmful substances:

a) heavy metals and their compounds;

b) organohalogen compounds;

c) organic compounds of phosphorus and tin;

d) pesticides, such as fungicides, herbicides, insecticides, slimicides and chemicals used for the preservation of wood, timber, wood pulp, cellulose, paper, hides and textiles;

e) oils and hydrocarbons of petroleum origin;

f) other organic compounds especially harmful to the marine environment;

g) ​nitrogen and phosphorus compounds;

h) radioactive substances, including wastes;

i) persistent materials which may float, remain in suspension or sink;

j) substances which cause serious effects on taste and/or smell of products for human consumption from the sea, or effects on taste, smell, colour, transparency or other characteristics of the water.



In order to protect the Baltic Sea Area from hazardous substances, the Contracting Parties shall prohibit, totally or partially, the use of the following substances or groups of substances in the Baltic Sea Area and its catchment area:

2.1 Substances banned for all final uses, except for drugs

DDT (1,1,1-trichloro-2,2-bis-(chlorophenyl)-ethane) and its derivatives DDE and DDD;

2.2 Substances banned for all uses, except in existing closed system equipment until the end of service life or for research, development and analytical purposes

a) PCB's (polychlorinated biphenyls);

b) PCT's (polychlorinated terphenyls).

2.3  Substances banned for certain applications

Organotin compounds for antifouling paints for pleasure craft under 25 m and fish net cages.



In order to protect the Baltic Sea Area from hazardous substances, the Contracting Parties shall endeavour to minimize and, whenever possible, to ban the use of the following substances as pesticides in the Baltic Sea Area and its catchment area:

Cadmium-compounds   -
Chlordane  57749
Chlordecone 143500
Chloroform  67663
1,2-Dibromoethane 106934
Dieldrin  60571
Endrin  72208
Fluoroacetic acid and derivatives7664393, 144490
Heptachlor  76448
Isobenzane 297789
Isodrin 465736
Lead-compounds   -
Mercury-compounds   -
Pentachlorophenol  87865
Polychlorinated terpenes8001501
Quintozene  82688
Selenium-compounds       -
2,4,5-T  93765