Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

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.

REACH

Cobaltate(3-), bis[6-amino-5-[(2-hydroxy-3,5-dinitrophenyl)azo]-1-naphthalenesulfonato(3-)]-, sodium

EC number: 285-249-5 | CAS number: 85049-76-9

Life Cycle description
Uses advised against

Ecotoxicological information

Short-term toxicity to fish

Administrative data

Link to relevant study record(s)

Description of key information

LC50 (96 h) on goldorfe = 68 mg/l

Key value for chemical safety assessment

Fresh water fish

Effect concentration:: 68 mg/L

Additional information

No complete study report on the potential toxicity to fish of Acid Green 104 was available. A brief description of a 96 -hour study on goldorfe (Leuciscus idus L.) reported:

LC50 = 68 mg/l

LC0 = 22 mg/l

LC100 = 215 mg/l

Due to the lack of details on composition of test material, test procedure and results, the reliability of this study could not be assessed.

Therefore, to the end of completing the evaluation, a read-across approach was adopted. In particular, available data on Similar Substance 02, i.e. cobalt complex with 2 phenyl-azo-naphtyl ligands functionalised by similar groups, was used. A detailed description of the read-across approach is attached in section 13.

Studies were conducted on samples with different purity, using different species of fish and different time of exposure. As no details were available, key information is reported in the table below.

FAT	% dye	LC50	duration	species	pH	date
FAT 20036/A	42%	45	48 h	forelle (salmo trout)	ca. 7.5	1974
FAT 20036/B	75%	58	48 h	forelle (salmo trout)	ca. 8	1978
FAT 20036/C	63%	42	96 h	forelle (salmo trout)	ca. 8	1980
FAT 20036/C	63%	382	96 h	zebra (danio rerio)	ca. 8	1981
FAT 20036/D	71.8%	183	96 h	zebra (danio rerio)	ca. 8	1982

Available information indicated each FAT as composed by dye and coupage, typically sodium lignosulfonate, water, sodium sulfate. Such compound were expected to have no impact on the toxicological profile.

Available data shows that different species have different sensitivity. In particular, this was clearly demonstrated by a study conducted with the same sample (FAT C) on two species of fish.

Overall, findings with Similar Substance 02 were:

LC50 (48 - 96 h) on salmo trout= 10 -100 mg/l

LC50 (96 h) on danio rerio > 100 mg/l

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.