Registration Dossier
Registration Dossier
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A mixture of: tert-alkyl(C12-C14)ammonium bis[1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphthalenolato(2-)]-chromate(1-); tert-alkyl(C12-C14)ammonium bis[1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphthalenolato(2-)]-chromate(1-); tert-alkyl(C12-C14)ammonium bis[1-[[5-(1,1-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-2-naphthalenolato(2-)]-chromate(1-); tert-alkyl(C12-C14)ammonium [[1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphthalenolato(2-)]-[1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphthalenolato(2-)]]-chromate(1-); tert-alkyl(C12-C14)ammonium [[1-[[5-(1,1-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-2-naphthalenolato(2-)]-[1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphthalenolato(2-)]]-chromate(1-); tert-alkyl(C12-C14)ammonium ((1-(4(or 5)-nitro-2-oxidophenylazo)-2-naphtholato)(1-(3-nitro-2-oxido-5-pentylphenylazo)-2-naphtholato))chromate(1-)
EC number: 403-720-7 | CAS number: 117527-94-3 NOIR ORASOL 9342A; NOIR ORASOL RLI; ORASOL BLACK 9342A; ORASOL BLACK RLI; SAVINYL NOIR 2R
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
With high probability acutely not harmful to daphnids, no effects occur within the range of water solubility.
Key value for chemical safety assessment
Additional information
To determine the toxicity of the test substance to freshwater invertebrates, a static study (limit test) with Daphnia magna according to OECD 202 and under GLP using Tween 80 as an emulsifier was performed (RCC Notox B.V. 1989). Except for one animal out of 20 exposed to nominal 1000 mg/l no immobility was recorded. Therefore, the test substance is with high probability acutely not harmful to daphnids.
These findings are supported by another non-GLP study according to OECD 202 (Ciba-Geigy Ltd. 1986). Due to the low water solubility of the test substance an emulsifier (Alkylphenol-polyglycolether) has been used also. The EC50 after 24 h was calculated to be above 100 mg/L. Therefore, no acute toxic effects occurred within the range of water solubility.
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