Registration Dossier
Registration Dossier
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.
Reaction products of (E)-5-((4-amino-5-methoxy-2-methylphenyl)diazenyl)-3-((phenylsulfonyl)oxy)naphthalene-2,7-disulfonic acid condensate with cyanurchloride, then condensate with (E)-7-amino-4-hydroxy-3-((2-methoxy-5-sulfophenyl)diazenyl)naphthalene-2-sulfonic acid, finally condensate with aniline, potassium salts
EC number: 948-912-6 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data

Toxicity to aquatic plants other than algae
Administrative data
Link to relevant study record(s)
Description of key information
Effects on frond number: ErC50 (7 d) > 482 mg/l (Probit regression model)
Effects on dry weight: ErC50 (7 d) > 482 mg/l (Probit regression model)
Key value for chemical safety assessment
- EC10 or NOEC for freshwater plants:
- 5.47 mg/L
Additional information
No data on target substance was available, thus acute toxicity to aquatic invertebrates was assessed using data on Similar Substance 02. Details on the read across are attached in section 13.
The substance was tested for toxicity on freshwater aquatic plants, i.e. Lemna minor, according to OECD guideline 221 under static exposure conditions.
Initial measured concentrations were 31.5, 59.3, 125, 245 and 490 mg/l of active ingredient. Concentrations at day 7 in % of initial value showed a decrease at the lower concentrations, possibly due to some adsorption to the roots. The significant decrease at low concentrations suggests that roots can only adsorb a small quantity of test item, thus “adsorption” effect is only visible in solution where less material is present; on the contrary, the small loss on the highest concentration is not be measurable.
In order to account for the decrease of test concentrations, geometric means over 7 days of measured concentrations were used in the assessment.
Plants at concentrations up to 125 mg/l were similar to control, in terms of number of fronds and length of roots. At 250 and 500 mg/l, there was a dose-dependent decrease in the size and number of fronds and in the length of roots.
Effects concentrations (EC10 and EC50), based on growth rate and yield, were determined using Probit regression model.
No observed effect concentrations (NOEC) were estimated by Williams multiple sequential t-test.
The EC50 values after 7 days resulted to be:
- > 482 mg/l of active ingredient, referred to the growth rate of frond number,
- > 482 mg/l of active ingredient, referred to the growth rate of dry weight.
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.
