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Diss Factsheets
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EC number: 236-164-7 | CAS number: 13197-76-7
- 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
Endpoint summary
Administrative data
Description of key information
Fish
The 96 h LC50 for Danio rerio exposed to Betadet S-20 was determined to be 184 mg/L with a corresponding NOEC of 168.2 mg/L. The LC50 equates to 55.2 mg principal constituent/L after correction for the p.c. content of the tested batch of Betadet S-20.
Daphnia
The key short-term toxicity to aquatic invertebrates study resulted in 24-h and 48-h EC50 values of 71.4 and 36.6 mg/L, respectively for Daphnia magna exposed to A-20HD. Test item concentration was corrected for its purity. The study met all of the validity criteria prescribed by the standard OECD 202 Guideline and is considered to be reliable.
A supporting study resulted in a 24-h EC50 of Betadet S-20 of >30 mg/L (the highest nominal concentration tested) and a 48-h EC50 of 16 mg/L, with a corresponding NOEC of 6.0 mg/L. The 48 h EC50 equates to 4.8 mg principal constituent/L, based on the 30% (w/w) p.c. content of the tested batch of Betadet S-20. However, given that no chemical analysis of test concentrations was included, this study is considered unreliable.
Algae
The 72 h ErC50 of Betadet S-20 based on inhibition of the growth rate of Pseudokirchneriella subcapitata was calculated to be 4.58 mg/L (95% confidence limit: 4.34 to 4.83 mg/L), expressed in terms of analytically verified nominal concentrations of the principal constituent. The corresponding NOErC (0 -72h) was 0.508 mg principal constituent/L.
Microorganisms
An assessment of the ready biodegradability of Betadet S-20 was performed with the test substance applied at a concentration of 10 mg/L in the Closed Bottle Test (OECD TG 301D). The test was inoculated with a low density of activated sludge microorganisms obtained from the secondary effluent of a STP that received sewage of predominantly domestic origin. The test design included a toxicity control that comprised a mixture of Betadet S-20 (10 mg/L) and the readily biodegradable reference compound sodium benzoate. The toxicity control response showed no evidence of suppression of the microbial utilisation of Na benzoate by the presence of Betadet S-20, when compared to the parallel performance of the reference treatment dosed with Na benzoate alone. These findings support a microbial NOEC of 10 mg Betadet S-20/L, which equates to 3.0 mg principal constituent/L, based on the 30% (w/w) p.c. content of the tested batch of Betadet S-20.
Additional information
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.
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