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EC number: 939-582-4 | CAS number: 1471315-26-0
- 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 algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
No effect are to be expected up to the limit of water solubility.
Key value for chemical safety assessment
Additional information
Since no long-term toxicity data with aquatic algae are available for fatty acids, C16-18 (even numbered), aluminum salts, in accordance to Regulation (EC) No. 1907/2006 Annex XI, 1.5, read-across data from other structurally related substances are provided. Two reliable read-across studies are available for aluminium hydroxide (CAS 21645-51-2) and palmitic acid (CAS 57-10-3). The substance fatty acids, C16-18 (even numbered), aluminum salts, is produced from natural fatty acid materials which is a mixture of stearic (C18) and palmitic (C16) acid. The substance consists of up to 90% natural fatty acid and up to 10% aluminum. Fatty acids, C16-18 (even numbered), aluminum salts, are present in water in dissociated form as different Al species and ionic fatty acid component. Due to poor water solubility, the amount of dissolved aluminium will be very low (max. 5 µg/L). The fatty acid component is readily biodegradable and therefore it undergoes rapid and ultimate degradation in most the environments. Fatty acids are natural constituents of the environment and are essential for a balanced nutrition of animals. No hazard to environment is expected for the C16-18 fatty acid moiety; nevertheless the available data with palmitic acid (C16) are presented. On the other hand, low soluble aluminium hydroxide represents similar release of Al to the aquatic environment as in case of fatty acid, C16 -18 (even numbered), aluminum salts.
One reliable and GLP compliant aquatic algae test performed according to OECD guideline 201is available for aluminium hydroxide. Algae Pseudokirchnerella subcapitata were exposed to the limit test concentration of 100 mg/L (WAF) for 72 hours. The measured concentration of total dissolved Al was 4µg/L. No significant reduction in growth rate was observed at the WAF of 100 mg/L. Therefore, the ErC50 (72 hours) was greater than 100 mg/L (WAF) and the NOEC value was stated as equal or greater than 100 mg/L (WAF).
An additional GLP compliant test with aquatic algae is available for palmitic acid (C16). The test was performed according to OECD guideline 201. Pseudokirchnerella subcapitata algae were exposed to 95% pure palmitic acid. No toxic effects to aquatic algae were observed up to the limit of water solubility of 0.9 mg/L regarding growth rate and biomass. Therefore, the 72-hour EC50 value can be stated as greater than 0.9 mg/L and NOEC equal or greater than 0.9 mg/L.
It is important to stress that both read-across substances - aluminium hydroxide and palmitic acid are not classified as hazardous to the aquatic environment according to Regulation 1272/2008. Since no toxic effects to aquatic algae were observed up to the water solubility limit of these source substances, it can be therefore concluded that the target substance fatty acids, C16-18 (even numbered), aluminum salts will not exhibit any toxicity to aquatic algae up to its solubility limit of < 0.15 mg/L (equal to < 5 µg Al/L).
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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