Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 274-407-9 | CAS number: 70210-10-5
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
96-h LC50 is 1104 mg/l (nominal concentration).
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 1 104 mg/L
Additional information
A study carried out in 1994 according to OECD guideline 203 (1984) was selected as key study. The composition of test substance was 45 % dye and 55 % sodium lignosulphonate. Despite the low water solubility of the test substance, measured concentrations were not reported. Nominal concentrations were far above the limit of solubility. However, mortality was observed only at very high concentrations (ca. 2000 mg/l).
Another study of acute toxicity on fish was available. Upon a 48h exposure of rainbow trout to test substance (30 % dye and 70 % dispersant), a LD50 of 120 mg/l was found. Irrespective of the lack of details, this study was disregarded, due to the type of dispersing agent. It is described as cresol-formaldehyde-naphtalenesulphonate condensate, i.e. a synthetic dispersing agent. Synthetic dispersants were used until sodium lignosulphonate displaced them, due to its lower toxicity. The higher acute toxicity in this study, despite the lower concentration of active ingredient of ca. 30 % with respect to ca. 45 % of the key study, might be attributed to the type of dispersant and not to nature of the active ingredient itself.
Consequently, this study was not taken into account for the evaluation of acute toxicity on fish due to possible toxic effects coming with the synthetic dispersant.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
