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EC number: 270-451-8 | CAS number: 68440-34-6
- 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
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
93% biodegradation in 28 days (OECD 301 D, O2 consumption); read-across
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
No studies are available on the biodegradation of Fatty acids, tallow, zinc salts. Therefore, in accordance to Regulation (EC) No 1907/2006 Annex XI, 1.5, the assessment of biodegradability was based on studies conducted with the structurally similar read-across substances Fatty acids, C16-18, zinc salts (CAS No. 91051-01-3) and Zinc-12-Hydroxystearate (CAS No. 35674-68-1). The two read-across substances are both salts of fatty acids and zinc, as Fatty acids, tallow, zinc salts. Also the fatty acids in all three substances are similar. Fatty acids, tallow, zinc salts mainly contains saturated fatty acids of chain lengths C16 and C18 and monounsaturated C18 fatty acids. C16-C18 fatty acids are also present in the first read-across substance. The second read-across substance mainly consists of saturated C18 fatty acids with a hydroxyl group. The single double bond of the C18 unsaturated fatty acids of Fatty acids, tallow, zinc salts is not expected to significantly slow down the biodegradation of the substance compared to the read-across substances. For further justification see the overall endpoint summary in section 5 and the read-across aproach justification in section 13 of the technical dossier.
The key ready biodegradability study carried out with Fatty acids, C16-18, zinc salts (CAS No. 91051-01-3), was performed following the OECD Guideline 301 D (TÜV Bayern Sachsen E.V., 1992). During the 28-day test period, biodegradation reached 93%, based on O2 consumption. As the test substance is a mixture of constituents with different chain-lengths, sequential (instead of concurrent) biodegradation takes place. Thus, referring to Annex I to the OECD Guideline for The Testing of Chemicals 'Revised introduction to the OECD guidelines for testing of chemicals, section 3' (OECD, March 2006), the 10-day-window should not be considered for the test substance. Due to a degradation of > 60% within 28 days the test substance can be regarded as readily biodegradable according to the OECD criteria.
The key ready biodegradability study carried out with Zinc bis[12-hydroxystearate] (CAS No. 35674-68-1), was performed following the OECD Guideline 301 B (Rudolf, 2003). During the 28-day test period, biodegradation reached 71%, based on CO2 evolution. The pass level of 60% was reached, but the 10-day window was not met.
Thus, based on these results and the structural similarity of the substances, Fatty acids, tallow, zinc salts can be considered readily biodegradable according to OECD criteria.
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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