Registration Dossier
Registration Dossier
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EC number: 939-582-4 | CAS number: 1471315-26-0
Endpoint summary
Administrative data
Description of key information
Additional information
The following information on aquatic toxicity is available for fatty acids, C16-18 (even numbered), aluminum salts:
- short term toxicity to fish
- short term toxicity to aquatic invertebrates
- toxicity to microorganisms
The following endpoints are covered using read-across data:
- long term toxicity to fish
- long term toxicity to aquatic invertebrates
- toxicity to aquatic algae
In accordance to Regulation (EC) No. 1907/2006 Annex XI, 1.5, read-across data from the structurally related substances are used.
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% of 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 the poor water solubility, the amount of dissolved aluminum is very low (max. 5 µg Al/L). Aluminum ions, if released from the test substance at all, will be transformed into aluminium hydroxide or aluminium oxide. Both these substances are insoluble under normal environmental conditions in the range of pH 5 – 8, thus, they precipitate and therefore they are immobilized. The fatty acid component is readily biodegradable and therefore it will undergo rapid and ultimate degradation in most environments. Fatty acids are natural constituents of the environment and are essential for a balanced nutrition of animals and no hazard to the environment is expected for the C16-18 fatty acid component.
The following read-across substances are used in accordance to Regulation (EC) No. 1907/2006 Annex XI, 1.5:
Aluminium sulphate (CAS 10043-01-3) for long term toxicity to fish and long term toxicity to aquatic invertebrates
Aluminium chloride (CAS 7446-70-0) for long term toxicity to fish and long term toxicity to aquatic invertebrates
Aluminium hydroxide (CAS 21645-51-2) for toxicity to aquatic algae
Palmitic acid (CAS 57-10-3) for long term toxicity to aquatic invertebrates and toxicity to aquatic algae
Acute and chronic aquatic toxicity tests of the substance to fish, invertebrates, algae and microorganisms showed no adverse effects occurred in the range of the water solubility of the substance (< 0.15 mg/L equal to < 5 µg Al/L).
Acute toxicity:
- to fish: no toxicity up to the water solubility limit; LC50 (96h) > 100 mg/L (WAF concentration, Danio rerio, OECD 203)
- to invertebrates: no toxicity up to the water solubility limit; EC50 (48h) > 100 mg/L (WAF concentration, Daphnia magna, OECD 202)
- to algae: no toxicity up to the water solubility limit; ErC50 (72h) > 100 mg/L (WAF concentration, Pseudokirchnerella subcapitata, OECD 201; read-across from CAS 21645-51-2 and 57-10-3)
Chronic toxicity:
- to fish: no toxicity up to the water solubility limit; NOEC > 0.15 mg/L (equal to 5 μg Al/L)
- to invertebrates: no toxicity up to the water solubility limit; NOEC > 0.15 mg/L (equal to 5 μg Al/L)
- to algae: no toxicity up to the water solubility limit; NOEC (72h) ≥ 100 mg/L (WAF concentration, Pseudokirchnerella subcapitata, OECD 201; read-across from CAS 21645-51-2)
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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