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EC number: 268-519-7 | CAS number: 68110-30-5
- 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
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Endpoint summary
Administrative data
Description of key information
Biodegradation in water:
Biodegradability of test chemical 1,5-Naphthalenedisulfonic acid, 2,2'-[(2,2'-disulfo[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulfo-6,2-naphthalenediyl)azo]]bis-, octasodium salt (CAS no. 68110-30-5) was estimated by using OECD QSAR tool box v3.3 by considering ten closest read across chemical log Kow as primary descriptor. Percent biodegradation of the test chemical 1,5-Naphthalenedisulfonic acid, 2,2'-[(2,2'-disulfo[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulfo-6,2-naphthalenediyl)azo]]bis-, octasodium salt was estimated to be 0.84 % by considering BOD as parameter and Microorganism as inoculum in 28 days. On the basis of percent degradability value it can be concluded that test chemical 1,5-Naphthalenedisulfonic acid, 2,2'-[(2,2'-disulfo[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulfo-6,2-naphthalenediyl)azo]]bis-, octasodium salt is not readily biodegradable.
Additional information
Biodegradation in water:
Predicted data study for target chemical 1,5-Naphthalenedisulfonic acid, 2,2'-[(2,2'-disulfo[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulfo-6,2-naphthalenediyl)azo]]bis-, octasodium salt (CAS no. 68110-30-5) and experimental studies for its structurally similar read across chemicals have been conducted and their results are summarized below for biodegradation in water endpoint.
Another study was experimental study done from Chemosphere journal Vo1.15 (1986) for structurally similar read across chemical Disodium 4,4'-bis(2-hydroxynaphthalen-1-ylazo)biphenyl-2,6'-disulphonate (CAS no.10169 -02 -5) in this study the aerobic biodegradation experiment was performed for read across chemical Disodium 4,4'-bis(2-hydroxynaphthalen-1-ylazo)biphenyl-2,6'-disulphonate using activated sludge at concentration 0.5 g/L dry material as inoculums and initial concentration of chemical taken was 100mg/L for 42 days. By considering DOC removal parameter read across chemical showed 17% degradation in 42 days. The read across chemical Disodium 4,4'-bis(2-hydroxynaphthalen-1-ylazo)biphenyl-2,6'-disulphonate belongs to D category according to table 1 and 2 as its limit value falls in that range. This percentage value is very less So it is concluded that Disodium 4,4'-bis(2-hydroxynaphthalen-1-ylazo)biphenyl-2,6'-disulphonate (CAS no. 10169 -02 -5) is not readily biodegradable.
Next study was also experimental study done from same source as mentioned in above experimental study in this study the aerobic biodegradation experiment was performed for read across chemical tetrasodium;3-[[4-[[4-[(2E)-2-(6-amino-1-oxo-3-sulfonatonaphthalen-2-ylidene)hydrazinyl]-6-sulfonatonaphthalen-1-yl]diazenyl]naphthalen-1-yl]diazenyl]naphthalene-1,5-disulfonate CAS no. 4399 -55 -7) using activated sludge at concentration 0.5 g/L dry material as inoculums and initial concentration of chemical taken was 100 mg/L for 42 days. By considering DOC removal parameter read across chemical showed -27 % degradation in 42 days. This percentage value is very less So it is concluded that read across chemical tetrasodium; 3-[[4-[[4-[(2E)-2-(6-amino-1-oxo-3-sulfonatonaphthalen-2-ylidene)hydrazinyl]-6-sulfonatonaphthalen-1-yl]diazenyl]naphthalen-1-yl]diazenyl]naphthalene-1,5-disulfonate is not readily biodegradable.
On the basis of results of all the studies mentioned above for target chemical 1,5-Naphthalenedisulfonic acid, 2,2'-[(2,2'-disulfo[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulfo-6,2-naphthalenediyl)azo]]bis-, octasodium salt (CAS no. 68110-30-5) and for its structurally similar read across chemicals it can be concluded that test chemical is not readily biodegradable.
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