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EC number: 271-808-0 | CAS number: 68608-89-9 This substance is identified by SDA Substance Name: C11-C13 branched alkyl benzene sulfonic acid sodium salt and SDA Reporting Number: 25-097-04.
- 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
Link to relevant study record(s)
Description of key information
80-90% of the analogue substance LAS was absorbed through the gastrointestinal tract. Most of the absorbed LAS was eliminated within 72 hours and 60-65% of the absorbed dose was eliminated in the urine, 35% of the absorbed 35S was excreted in the bile and was reabsorbed completely from the gastrointestinal tract.
Key value for chemical safety assessment
- Bioaccumulation potential:
- low bioaccumulation potential
- Absorption rate - oral (%):
- 80
- Absorption rate - dermal (%):
- 1
- Absorption rate - inhalation (%):
- 80
Additional information
No specific studies on sodium salt branched alkylate derivatives (BABS Na salt) were available. However, a study is available on analogue linear alkyl benzene sulfonate (LAS). The LAS structure is a C10 -C13 linear alkyl chain with a para-substituted benzene sulfonic acid sodium salt group attached at any of the secondary alkyl chain carbon positions. The alkyl chian length averages 11.6. LAS is structurally similar to BABS Na salt, as both are para C11 -C13 alkylbenzene sulfate sodium salts. The primary difference is whether the alkyl chain is linear or branched. A study of biotransformation and kinetics of BABS Na salt (IUCLID section 6.5) indicates that the microbial biodegradatin pathway of BABS Na salt is similar to that of LAS. Based on similar structures and microbial biodegradation pathways, LAS is a good analogue for read-across for instances where data are availabe on it but not on BABS Na salt.
The absorption, distribution, metabolism and elimination of LAS (radioactively labeled with 35S) were studied in male Charles River rats. LAS was readily absorbed by the gastrointestinal tract and rapidly metabolized and excreted in the urine. Oral and inhalation absorption is considered to be equal. Based on data (IUCLID 7.1.1), the substance is readily absorbed following oral exposure (LAS data show 80-90% absorption). Therefore, there is no need to apply the default Application Factor of 2 based on the assumption that oral absorption is only 50% compared to 100% for inhalation. Based on data from a dermal absorption study of a C12LAS homologue in isolated human epidermis (Howes 1975) that indicated < 0.065% of the applied dose penetrated the skin in 48 hours, 1% dermal absorption is conservatively assumed.
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