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EC number: 237-067-2 | CAS number: 13598-37-3
- 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

Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
For soluble zinc substances, there are many good quality and relevant data for 5 standard species.
Key data (lowest EC50 values) for zinc ions in freshwater are:
-for Ceriodaphnia dubia: 0.413 mg Zn/l (single value) at low pH and low hardness
-for Ceriodaphnia dubia: >0.53 mg Zn/l (single value) at low pH and high hardness
-for Ceriodaphnia dubia: 0.147 mg Zn/l (geomean value) at neutral/high pH and low hardness
-for Ceriodaphnia dubia: 0.228 mg Zn/l (geomean value) at neutral/high pH and high hardness
Key value for chemical safety assessment
Additional information
For soluble zinc substances, there are many good quality and relevant data for 5 standard species. Tests were done according to standard protocol or equivalent.
Data are grouped per species according to
-pH: low (6 -<7) - neutral/high (7 -8.5)
-and hardness: low/medium (<100mg CaCO3/l) and medium/high (>100 mg CaCO3/l).
Ceriodaphnia dubia is for all test conditions the most sensitive species.
Specific ecotoxicity of the substance
The ecotoxicity of the substance is mainly assessed by read across from information obtained on other zinc substances, i.e. ZnCl2 and ZnSO4. On zinc bis(dihydrogenphosphate), one specific acute ecotoxicity test was performed using Daphnia magna, according to OECD 202 standard protocol (Rzodeczko 2010). The observed 48hrs EC50 of this study was 3.94 mg Zn (measured, dissolved)/l, resulting from 9.04 mg Zn total loading/l; the observed NOEC values were 2.87 mgZn (measured, dissolved) resulting from 3.13 mg Zn/l total loading .
The average EC50 value observed on Daphnia magna under similar test conditions (neutral-high pH, hardness >100mg CaCO3/l) in the soluble zinc salt studies was 1.052mg Zn (dissolved)/l. Comparison of this latter value with the specific result obtained on the substance suggests that the ecotoxicity of the substance is similar to lower as compared to that of the soluble compounds, when the dissolved zinc fraction is considered. In other words, the validity of read across is confirmed by this specific test on Daphnia magna. It is noted that not all the zinc was dissolved from the substance in the ecotoxicity test.
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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