(b) Long-term aquatic hazard
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Statutory Documents - IMO Publications and Documents - International Conventions - MARPOL - International Convention for the Prevention of Pollution from Ships - Annex III of MARPOL 73/78Regulations for the Prevention of Pollution by Harmful Substances Carried by Sea in Packaged Form - Appendix to Annex III - Criteria for the identification of harmful substances in packaged form - (b) Long-term aquatic hazard

(b) Long-term aquatic hazard

Parent topic: Appendix to Annex III - Criteria for the identification of harmful substances in packaged form

(i) Non-rapidly degradable substances for which there are adequate chronic toxicity data available

Category Chronic 1:
  Chronic NOEC or ECx (for fish) ≤ 0.1 mg/l and/or
  Chronic NOEC or ECx (for crustacea) ≤ 0.1 mg/l and/or
  Chronic NOEC or ECx (for algae or other aquatic plants) ≤ 0.1 mg/l
     
Category Chronic 2:
  Chronic NOEC or ECx (for fish) ≤ 1 mg/l and/or
  Chronic NOEC or ECx (for crustacea) ≤ 1 mg/l and/or
  Chronic NOEC or ECx (for algae or other aquatic plants) ≤ 1 mg/l

(ii) Rapidly degradable substances for which there are adequate chronic toxicity data available

Category Chronic 1:
  Chronic NOEC or ECx (for fish) ≤ 0.01 mg/l and/or
  Chronic NOEC or ECx (for crustacea) ≤ 0.01 mg/l and/or
  Chronic NOEC or ECx (for algae or other aquatic plants) ≤ 0.01 mg/l
     
Category Chronic 2:
  Chronic NOEC or ECx (for fish) ≤ 0.1 mg/l and/or
  Chronic NOEC or ECx (for crustacea) ≤ 0.1 mg/l and/or
  Chronic NOEC or ECx (for algae or other aquatic plants) ≤ 0.1 mg/l

(iii) Substances for which adequate chronic toxicity data are not available

Category Chronic 1:
  96 hr LC50 (for fish) ≤ 1 mg/l and/or
  48 hr EC50 (for crustacea) ≤ 1 mg/l and/or
  72 or 96 hr ErC50 (for algae or other aquatic plants) ≤ 1 mg/l
  and the substance is not rapidly degradable and/or the experimentally determined BCF is ≥ 500 (or, if absent the log Kow ≥ 4).
Category Chronic 2:
  96 hr LC50 (for fish) >1 mg/l but ≤ 10 mg/l and/or
  48 hr EC50 (for crustacea) >1 mg/l but ≤ 10 mg/l and/or
  72 or 96 hr ErC50 (for algae or other aquatic plants) ≤ 1 mg/l but ≤ 10 mg/l
  and the substance is not rapidly degradable and/or the experimentally determined BCF is ≥ 500 (or, if absent, the log Kow ≥ 4).

 Additional guidance on the classification process for substances and mixtures is included in the IMDG Code.

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