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EC number: 930-915-9 | CAS number: 1318-02-1
- 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
Long-term toxicity to fish
Administrative data
Link to relevant study record(s)
- Endpoint:
- fish early-life stage toxicity
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: EPA: “Proposed Recommended Bioassay Procedures for Egg and Fry Stages of Freshwater Fish"
- Version / remarks:
- 1972
- Deviations:
- not specified
- GLP compliance:
- not specified
- Specific details on test material used for the study:
- Type-A Zeolite
- Analytical monitoring:
- yes
- Details on test solutions:
- To avoid the effects of hardness ion depletion during all freshwater tests, including acutes, longer-term chronics and critical life stage testing, the zeolite used in these tests was pre-exchanged with Ca2+, Mg2+, Na+, and K+ ions. A 100-L batch of reconstituted water was prepared at 100x recommended salt concentrations. A 500-g sample of zeolite was added, mixed for 1 h, and allowed to settle. Three subsequent suspensions were mixed with new batches of reconstituted water until no further depletion in total hardness of Ca2+ concentration was
recorded. Atomic absorption analyses of the zeolite at this time indicated that 90% existed in the Ca2+ exchanged form with a total of 10% as Mg2+, Na+, and K+ salts. This exchange was deemed appropriate to model the environmental form of zeolite since it is highly unlikely that the sodium form of zeolite would predominate in natural surface waters. - Test organisms (species):
- Pimephales promelas
- Details on test organisms:
- Eggs were obtained from the USEPA National Water Quality Laboratory in Duluth, Minn. Exposure of eggs in each test began within 48 h after fertilization.
- Test type:
- flow-through
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 30 d
- Hardness:
- in average 36 mg/L CaCO3
- Test temperature:
- 21 +/- 1 °C
- pH:
- 7.6 +/- 0.3
- Dissolved oxygen:
- >= 86%
- Nominal and measured concentrations:
- measures: 6.2, 12.3, 22.6, 86.7 mg/l
plus control group - Reference substance (positive control):
- no
- Key result
- Duration:
- 30 d
- Dose descriptor:
- NOEC
- Effect conc.:
- >= 86.7 mg/L
- Nominal / measured:
- meas. (arithm. mean)
- Basis for effect:
- other: hatchability of eggs and survival, mean total length, weight
- Details on results:
- The results of the various biological data obtained from continuous-flow exposures of fathead minnow, Pimephales promelas, eggs and fry to suspensions of Ca-exchanged zeolite indicated no adverse effect on hatchability of eggs and survival, mean total length, and average weight of fry at 30 days post hatch.
The concentrations of test material in suspension varied considerably during the exposure period, reflecting the difficulty of maintaining uniform suspensions of these particulates and the propensity of the compounds to clump and settle on the exposed surface of the chambers. Highest zeolite concentrations varied from 33 to 182 mg/L with a mean of 87 mg/L. Thus, the observed no-effect concentration of MATC for zeolite with the fathead minnow was determined to be a concentration greater than the highest mean exposure of the material, 87 mg/L. - Validity criteria fulfilled:
- not specified
- Conclusions:
- The results of the various biological data obtained from continuous-flow exposures of fathead minnow, Pimephales promelas, eggs and fry to suspensions of Ca-exchanged zeolite indicated no adverse effect on hatchability of eggs and survival, mean total length, and average weight of fry at 30 days post hatch. The mean NOEC was 87 mg/l.
- Executive summary:
Partial chronic toxicity tests designed to include exposures of the sensitive egg and fry life stages of the fathead minnow, Pimephales promelas, were done with zeolite following methods modified from USEPA.
Reference
Description of key information
The results of the various biological data obtained from continuous-flow exposures of the freshwater fish fathead minnow, eggs and fry to suspensions of Ca-exchanged zeolite indicated no adverse effect on hatchability of eggs and survival, mean total length, and average weight of fry at 30 days post hatch. The mean NOEC was equal or greater than 86.7 mg/l.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Dose descriptor:
- NOEC
- Effect concentration:
- >= 86.7 mg/L
Additional information
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.