Division 4.1.2.6 F1
United Kingdom
The criteria for classifying and categorising substances as ‘ hazardous to the aquatic environment ’ are summarised in Table 4.1.0.
F2Table 4.1.0
Classification categories for substances hazardous to the aquatic environment
| (a) Short-term (acute) aquatic hazard | ||
|---|---|---|
| Category Acute 1: | (Note 1) | |
| 96 hr LC 50 (for fish) | ≤ 1 mg/l and/or | |
| 48 hr EC 50 (for crustacea) | ≤ 1 mg/l and/or | |
| 72 or 96 hr ErC 50 (for algae or other aquatic plants) | ≤ 1 mg/l. | (Note 2) |
| (b) Long-term (chronic) aquatic hazard | ||
| (i) Non-rapidly degradable substances (Note 3) for which there are adequate chronic toxicity data available | ||
| Category Chronic 1: | (Note 1) | |
| Chronic NOEC or EC x (for fish) | ≤ 0,1 mg/l and/or | |
| Chronic NOEC or EC x (for crustacea) | ≤ 0,1 mg/l and/or | |
| Chronic NOEC or EC x (for algae or other aquatic plants) | ≤ 0,1 mg/l. | |
| Category Chronic 2: | ||
| Chronic NOEC or EC x (for fish) | ≤ 1 mg/l and/or | |
| Chronic NOEC or EC x (for crustacea) | ≤ 1 mg/l and/or | |
| Chronic NOEC or EC x (for algae or other aquatic plants) | ≤ 1 mg/l. | |
| (ii) Rapidly degradable substances (Note 3) for which there are adequate chronic toxicity data available | ||
| Category Chronic 1: | (Note 1) | |
| Chronic NOEC or EC x (for fish) | ≤ 0,01 mg/l and/or | |
| Chronic NOEC or EC x (for crustacea) | ≤ 0,01 mg/l and/or | |
| Chronic NOEC or EC x (for algae or other aquatic plants) | ≤ 0,01 mg/l. | |
| Category Chronic 2: | ||
| Chronic NOEC or EC x (for fish) | ≤ 0,1 mg/l and/or | |
| Chronic NOEC or EC x (for crustacea) | ≤ 0,1 mg/l and/or | |
| Chronic NOEC or EC x (for algae or other aquatic plants) | ≤ 0,1 mg/l. | |
| Category Chronic 3: | ||
| Chronic NOEC or EC x (for fish) | ≤ 1 mg/l and/or | |
| Chronic NOEC or EC x (for crustacea) | ≤ 1 mg/l and/or | |
| Chronic NOEC or EC x (for algae or other aquatic plants) | ≤ 1 mg/l. | |
| (iii) Substances for which adequate chronic toxicity data are not available | ||
| Category Chronic 1: | (Note 1) | |
| 96 hr LC 50 (for fish) | ≤ 1 mg/l and/or | |
| 48 hr EC 50 (for crustacea) | ≤ 1 mg/l and/or | |
| 72 or 96 hr ErC 50 (for algae or other aquatic plants) | ≤ 1 mg/l. | (Note 2) |
| and the substance is not rapidly degradable and/or the experimentally determined BCF ≥ 500 | ||
| (or, if absent, the log K ow ≥ 4). | (Note 3). | |
| Category Chronic 2: | ||
| 96 hr LC 50 (for fish) | > 1 to ≤ 10 mg/l and/or | |
| 48 hr EC 50 (for crustacea) | > 1 to ≤ 10 mg/l and/or | |
| 72 or 96 hr ErC 50 (for algae or other aquatic plants) | > 1 to ≤ 10 mg/l. | (Note 2) |
| and the substance is not rapidly degradable and/or the experimentally determined BCF ≥ 500 | ||
| (or, if absent, the log K ow ≥ 4). | (Note 3). | |
| Category Chronic 3: | ||
| 96 hr LC 50 (for fish) | > 10 to ≤ 100 mg/l and/or | |
| 48 hr EC 50 (for crustacea) | > 10 to ≤ 100 mg/l and/or | |
| 72 or 96 hr ErC 50 (for algae or other aquatic plants) | > 10 to ≤ 100 mg/l. | (Note 2) |
| and the substance is not rapidly degradable and/or the experimentally determined BCF ≥ 500 | ||
| (or, if absent, the log K ow ≥ 4). | (Note 3). | |
| ‘ Safety net ’ classification Category Chronic 4 Cases when data do not allow classification under the above criteria but there are nevertheless some grounds for concern. This includes, for example, poorly soluble substances for which no acute toxicity is recorded at levels up to the water solubility (note 4), and which are not rapidly degradable in accordance with Section 4.1.2.9.5 and have an experimentally determined BCF ≥ 500 (or, if absent, a log Kow ≥ 4), indicating a potential to bioaccumulate, which will be classified in this category unless other scientific evidence exists showing classification to be unnecessary. Such evidence includes chronic toxicity NOECs > water solubility or > 1 mg/l, or other evidence of rapid degradation in the environment than the ones provided by any of the methods listed in Section 4.1.2.9.5. | ||
Annotations
Textual amendments
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- F2