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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 272-745-1 | CAS number: 68910-55-4
Endpoint summary
Administrative data
Description of key information
Additional information
Experimental studies are available for all trophic levels investigating the short- and long-term effects of the test substance on species of fish, aquatic invertebrates, algae and microorganisms.
Short-term toxicity data are available for three trophic levels (aquatic invertebrates, fish and algae).
In a short-term toxicity test with marine fish Scophthalmus maximus (OECD 203), the 96 h LC50 was calculated as > 1000 mg/L, based on nominal Water Accommodated Fraction concentrations. There was no observed mortality in the control vessels nor in any of the tested material concentrations (100.0 - 1000.0 mg/L in WAFs).
The 48 h LC50 for the marine crustacean Acartia tonsa was calculated to be > 2000 mg/L based on nominal Water Accommodated Fractions (WAFs) concentrations. There was no evidence of a dose response.
The re-analysis of original test data of a 72 h study with the marine alga Skeletonema costatum according to ISO 10253, resulted in an EC50 of 125.5 mg/L (nominal). Organolignite's physical properties (i.e., low water solubility [54 µg/L] and dark brown/black color), suggest that the observed algal growth reduction is due to a physical effect and not a direct toxic effect.
The available long-term study with fish is a 28-day limit test conducted with freshwater fish species Pimephales promelas. In a semi-static system according to OECD 210, no statistically sgnificant effects on egg hatching success, juvenile survival, or final weights were detected in the 12 mg/L exposure group. The derived NOELR (28 d) was therefore ≥ 12 mg/L (nominal).
In a long-term study with Daphnia magna (OECD 211), no effect on survival, body length, first brood time and intrinsic rate of population increase was detected up to the highest tested nominal concentration of 10 mg/L. The derived NOELR (21 d) was therefore ≥ 10 mg/L (nominal) based on nominal Water Accommodated Fractions (WAFs).
Furthermore, no toxic effects towards microorganisms of activated sludge were recorded.
The compiled data for acute and chronic toxicity indicate no short-term or long-term toxicity on aquatic freshwater organisms of all trophic levels up to the limit of water solubility of the test substance.
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.
