Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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.
EC number: 800-660-7 | CAS number: 1258274-08-6
- 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
No metabolism or toxicokinetic data was generated on any of the constituents involved with this dataset. The information in this chapter has been derived based on the physicochemical properties of the substance, information from QSAR models, i.e. QSAR Toolbox (v.3.4) and EpiSuite (v. 4.1) and information on bioaccumulation potential from the chapter on environmental fate and pathways. The substance has a molecular weight of 442,589 g/Mol and a low vapour pressure of 0.0015 Pa at 20°C. The log Kow of -3.3 suggests that the substance has a low bioaccumulation potential. The QSAR Toolbox (version 3.1) was used to estimate the human intestinal absorption. The absorption is considered to be 100% by all routes.
Key value for chemical safety assessment
- Bioaccumulation potential:
- low bioaccumulation potential
- Absorption rate - oral (%):
- 100
- Absorption rate - dermal (%):
- 100
- Absorption rate - inhalation (%):
- 100
Additional information
Substance:
The substance “Aromatic hydrocarbons, C10-13, reaction products with branched nonene, sulfonated, sodium salts”, further referred to asSodium alkylnaphthalene sulfonateor ANS, is a UVCB of which the most representative structure is given in the properties table below. ANS is anionic (-2) at all physiological pH.Based on its surfactant properties, the structure is not expected to easily pass membrane structures, but cytotoxicity through disruption of cell membrane is expected. This is supported by study results: All available data indicates that the NOAEL is driven by local effects of the substance on skin and gastro-intestinal tract.
No metabolism or toxicokinetic data was generated on any of the constituents involved with this dataset. The information in this chapter has been derived based on Profiling, the physicochemical properties of the substance, information from QSAR models, i.e. QSAR Toolbox (v.3.4) and EpiSuite (v. 4.1) and information on bioaccumulation potential from the chapter on environmental fate and pathways.
Physical-chemical properties
The pure substance is a solid, with a melting point of 98 °C and a boiling point > 350 °C.
The anionic properties at all pH contributes to it water solubility, as is demonstrated by the measured value of 530 g/L. Its surface active properties result to a measured surface tension of30 mN/m and a CMC of 1.6 g/L.
The calculated vapour pressure is very low. The measured vapour pressure is with 0.0015 Pa at 20°C also low, although higher than expected from calculations. This is probably due to the impurities in this UVCB substance.
Profiling:
|
alkylnaphthalene sulfonate, sodium salt (ANS) |
Chemical name |
Aromatic hydrocarbons, C10-13, reaction products with branched nonene, sulphonated, sodium salts |
CAS |
1258274-08-6 |
Physical state |
Off white powder, free flowing. (low nonene substitution) All particles are smaller than 100 µm: (Dx: x vol.% with smaller diameter) D10 = 7,7 µm; D50 = 39.2 µm; D90 = 92.8 µm; D99 = 153-159 µm |
SMILES |
CCC(C)C(C)CC(C)C1=CC=C(C2=C1C(C)=C(C)C(=C2)S(O)(=O)=O)S(O)(=O)=O |
Molecular structure |
|
Molecular formula |
C21H30O6S2 |
Molecular weight |
442,589 |
Density |
0.820 at 20°C. (AN exp) |
Solubility:ALogPS 2.0 WSKOW v1.42 WATERNT v1.01 |
-4.245 (25.2 mg/L) 0.2822 mg/L 16585 mg/L |
Solubility (meas) |
530 g/L at 20°C (AN exp) CMC = 1.6 g/L (active concentration) at 25 °C. |
Surface tension |
30 mN/m (1 g/L at pH 7) |
pKa: |
not relevant (always 2-) |
logPow(ALOGPS 2.1) (KOWWIN v1.68) |
3.63 (± 1.84) 4.4138 |
logPow (meas) |
-3.3 (AN exp) |
logD (Chemaxon) |
n.a. |
Mp (EPIWIN) |
274.45 °C |
bp (EPIWIN) |
632.41 °C |
Vp (EPIWIN) 25°C |
7.3E-016 Pa (Modified Grain Method) |
Mp (meas) |
98 °C. (AN exp.) |
bp (meas) |
> 350 °C. (AN exp.) |
Vp (meas) |
0.0015 Pa at 20°C; 0.0058 mPa at 25 °C. (AN exp) |
Surface tension |
1 g/L at pH 7: 30 mN/m. (AN exp) |
Dermal penetration coefficient Kp (est) |
Kp (est): 0.00441 cm/hr (EPI Suite) Kp (est): 0.000539 cm/h (DEREK) |
Human Intestinal absorption (HIA) |
83.1% |
Modified Lipinski: log Pow (≤ 5) H-acceptors (≤10) H-donors (≤ 5) mw (< 500 D) Rotatable bonds (≤10) PSA (<140Å2) Conclusion |
Yes: 3.63 Yes: 6 Yes: 2 Yes: 442.6 Yes: 7 Yes: 110,834 Å2 Likely to be bioavailable (ADMET: Low absorption; includes LogP of 5.898) |
(*) The iso-C9 chain is taken as representative structure
Molecular formula, molecular weight and pKa were all calculated using ChemAxon MarvinSketch (v.16.2.22).
Melting point, boiling point, vapor pressure and logPow were estimated by EPI Suite (v4.1) – on MAPTA chloride.
Solubility and logPow are estimated using ALOGPS 2.1 (VCCLAB, Virtual Computational Chemistry Laboratory,http://www.vcclab.org, 2005)
Absorption properties:
- dermal: EpiSuite v. 4.1 (Dermwin v2.02); (water:0.0005 cm/hr): log Kp = -2.80 + 0.66 log Kow - 0.0056 MW
DEREK Nexus (Lhasa) v.2.1.1, 2016: Log Kp (cm.h-1) = -2.72 + 0.71 Log P – 0.0061 MW
- intestinal: HIA: QSAR toolbox (version 3.3.5) (Human Intestinal Absorption) (QRMF is attached)
- ChemAxon MarvinSketch (v.16.2.22).
- ADMET: Accelrys/Biovia Discovery Studio ADME & TOPKAT Toxicity Package
Toxicokinetic properties:
The properties of ANS indicate good solubility, not too high LogPow, which are favourable for systemic absorption. Also (modified) Lipinski rules suggest and QSARs indicate that ANS is expected to be reasonably absorbed.
Oral absorption:
Ingestion is not a likely route of exposure and the irritating effects would limit accidental oral exposure. The QSAR Toolbox (version 3.4) was used to estimate the human intestinal absorption. The absorption following oral exposure is estimated to 83.1%. Due to no actual test data on the substance a worst case approach is taken and the default 100% is used in the risk assessment.
Dermal absorption:
No experimental data are available on dermal absorption. ANS is not expected to easily pass the skin in view of its ionised form at physiological conditions..
Due to the irritating nature of the substance, the required risk management measures to handle it should minimize the potential for contact with the skin. However due to the irritating properties which would possibly compromise the barrier properties of the skin, possible exposure to the test substance would have to be assumed to result in 100% absorption. The low octanol water partition coefficient of Log Kow -3.3 would reduce its potential for being absorbed through the skin, but the estimation of dermal absorption performed using EpiSuite (v.4.1) indicates some uptake.
Lacking adequate quantitative evaluation, 100% dermal absorption is considered as worst case assumption.
Respiratory absorption:
As a worst case, absorption via the inhalational route is also considered to be complete, although exposure to the substance via inhalation is unlikely based on the physical appearance of the substance. In view of thevery low vapour pressure is exposure via inhalation in principle only possible via aerosol of dust. In both cases most is expected to be deposited in the nose, throat and upper airways and will be subsequently swallowed following mucociliary transportation to pharynx. This results to no principal difference in absorption compared oral route. Asworst case approach also 100% absorption is considered via inhalation route.
The substance is not considered to have a potential for bioaccumulation, based on its water solubility properties and the low Kow value, and lack of increased toxicity observed in repeated dose studies of different duration.
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.