Registration Dossier
Registration Dossier
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A mixture of isomers of: 1,1'-[(3,5(or 2,4 or 4,6 or 2,6)-dihydroxy-o(or m or p)-phenylene)bis(azo-meta-phenyleneazo{1-[3-(dimethylamino)propyl]-1,2-dihydro-6-hydroxy-4-methyl-2-oxopyridine-5,3-diyl})]dipyridinium-dichloride-dihydrochloride; 1-(1-[3-(dimethylamino)propyl]-5-{3-[x-(4-{1-[3-(dimethylamino)propyl]-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-5-pyridinio-3-pyridylazo}phenylazo)-2,4(or 2,6 or 3,5 or 4,6)-dihydroxyphenylazo]phenylazo}-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridyl)pyridinium-dichloride-dihydrochloride (where x is variable)
EC number: 404-540-1 | CAS number: 159405-95-5 BRAUN HM 2763; BROWN HM 2763; BRUN HM 2763; BRUNO HM 2763
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.1 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 10 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.1 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 10 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.392 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 39.2 µg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 19.6 µg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
According to the CLP Regulation (EC 1272/2008), the threshold for classification is 1 mg/l and 100 mg/l for acute toxicity and chronic toxicity, respectively.
In particular, classification for short-term (acute) aquatic hazard Category Acute 1 applies if:
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.
For substances for which adequate chronic toxicity data are not available, classification as Category Chronic 3 applies if:
96 hr LC50 (for fish) > 10 ≤ 100 mg/l and/or
48 hr EC50 (for crustacea) > 10 ≤ 100 mg/l and/or
72 or 96 hr ErC50 (for algae or other aquatic plants) > 10 ≤ 100 mg/l and
the substance is not rapidly degradable and/or the experimentally determined BCF ≥ 500 (or, if absent, the log Kow ≥ 4).
Based on available data, the substance is not classified for acute and chronic aquatic toxicity.
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