Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 233-135-0 | CAS number: 10043-01-3
- 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
![](https://echa.europa.eu./o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_ecotoxicological-information.png)
Additional ecotoxological information
Administrative data
- Endpoint:
- additional ecotoxicological information
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- June 2005, 2007 and 2008
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Field study of water body exposure to aluminium chloride, generally outside of the scope of standard regulatory assessment methods but useful supporting evidence of the impact of large scale exposure of ecosystems to aluminium salts
Data source
Reference
- Reference Type:
- publication
- Title:
- Seven years from the first application of polyaluminium chloride in the Czech republic - effects on thytoplankton communities in three water bodies
- Author:
- Jancula D, Marsalek B
- Year:
- 2 012
- Bibliographic source:
- Chemistry and Ecology 28 (6) pp 535-544
Materials and methods
- Principles of method if other than guideline:
- Field studies further to treatment of Czech waterbodies to reduce algae populations below the local hygiene limit
- GLP compliance:
- no
Test material
- Reference substance name:
- PAX-18
- IUPAC Name:
- PAX-18
- Reference substance name:
- Aluminum chloride, basic
- EC Number:
- 215-477-2
- EC Name:
- Aluminum chloride, basic
- Cas Number:
- 1327-41-9
- Molecular formula:
- General formula: Al(OH)x(Cl)(3-x), with x ranging from > 0 to 2.3 and typically being > 0.5.
- IUPAC Name:
- Aluminum Chloride, basic
- Test material form:
- other: solution
- Details on test material:
- no data
Constituent 1
Constituent 2
Results and discussion
Any other information on results incl. tables
All the lakes had pHs of approxiamtely 8 and were stable over the study period (approximately one month for each year the water bodies were treated). Temperatures varied from 20 to 30°C and oxygen concentrations from 60 to 110%.
Machovo lake, 2005. Immediately after treatment Chla concentration decreased from 33 -36 µg/L to 11 -14 µg/L over the whole lake. the assembalge composition remained unchanged. Cyanobacteria was limited thereafter due to being outcompeted by green algae thanks to certain cliamtic coinditions and nutrient availability. Most zooplankton (90%) decreased after treatment returning to their original levels six weeks after treatment.
Small lagoon of the Nové Mlyny reservoir, 2006: Chla between 7 -9 µg/L dominated by the Cyanobacterium, Aphanizmenon gracile. Concentrations of Chla dropped to 4 -5µg/L immediately after treatment but returned to 9 µg/L 3 days later increasing over the Summer. No dissolved microcystins were found in the water.
The lagoon was retreated in 2007: Chla was 5.9 µg/L. Cyanobacteria Chla concentration reduced by approximately 70% while diatoms and cryptophaetae decresaed by 28%. This was considered to be due to the smaller cell size of the cyanobacter which would be expected to be removed more efficiently than the other species. Recovery of total algae occurred within 2 weeks of treatment.
The lagoon was retreated in 2008: The chla concentration was approximately 9 µg/L. Total algae decreased to 4.3 µg/L. Phytoplankton recovered within one month.
Plumlov reservoir, 2007: The chla concentration decreased from 12.4 to 4.7 µg/L. One week later Chla levels reached 31.4 µg/L. Aquatic invertebrate levels decreased by 91% on the third day after application. Cladocera was the most sensitive zooplankton family and started to increase again after one week.
Likely explanations for the impact on invertebrates (notably cladocerans) is provided: clogging of filtering apparatus by the particles of test substance and subsequent lack of food because of coagulation of phytoplankton and capture of organisms into the floccules. The authors state that toxicity of the aluminium is considered an unlikely cause of organism number reduction but cannot be neglected. The authors also state that while they did not directly monitor fish populations during their work, they never observed fish mortality either during or after application.
In the case of this study the lack of long term effects as testified to by the relatively rapid recoveries of the ecosystem in each case suggest that concentrations of aluminium reduce below levels that may cause physical or toxic effects to phyto- or zooplankton within a few days (at most), at least at the pHs of these water bodies, which were all around 8.
Applicant's summary and conclusion
- Executive summary:
Three sites received single treatments with PAX-18 to reduce algal blooms for public hygiene purposes by injecting the substance directly below the surface of the water bodies to obtain final concentrations of 3.45 mgAl/L (Machovo lake, 2005), 6.5 and 5.0 mgAl/L (small lagoon of the Nové Mlyny reservoir, 2006 and 2007 respectively and 2008) and 6 mgAl/L (Plumlov reservoir, 2007). The pH, temperature and oxygen and Chlorophyll a concentrations were measured in situ. Zooplankton was sampled. Data were statistically analysed using ANOVA and Dunnett's tests.
All the lakes had pHs of approxiamtely 8 and were stable over the study period (approximately one month for each year the water bodies were treated). Temperatures varied from 20 to 30°C and oxygenc oncentrations from 60 to 110%.
Machovo lake, 2005. Immediately after treatment Chla concentratiion decreased from 33 -36 µg/L to 11 -14 µg/L over the whole lake. the assembalge composition remained unchanged. Cyanobacteria was limited thereafter due to being outcompeted by green algae thanks to certain climatic coinditions and nutrient availability. Most zooplankton (90%) decreased after treatment returning to their original levels six weeks after treatment.
Small lagoon of the Nové Mlyny reservoir, 2006: Chla between 7 -9 µg/L dominated by the Cyanobacterium Aphanizmenon gracile. Concentrations of Chla dropped to 4 -5µg/L immediately after treatment but returned to 9 µg/L 3 days later increasing over the Summer. No dissolved microcystins were found in the water.
The lagoon was retreated in 2007: Chlawas 5.9 µg/L. Cyanobacteria Chla concentration reduced by approximately 70% while diatoms and cryptophaetae decresaed by 28%. This was considered to be due to the smaller cell size of the cyanobacter which would be expected to be removed more efficiently than the other species. Recovery of total algae occurred within 2 weeks of treatment.
The lagoon was retreated in 2008: The chla concentration was approximately 9 µg/L. Total algae decreased to 4.3 µg/L. Phytoplankton recovered within one month.
Plumlov reservoir, 2007: The chla concentration decreased from 12.4 to 4.7 µg/L. One week later Chla levels reached 31.4 µg/L. Aquatic invertebrate levels decreased by 91% on the third day after application. Cladocera was the most sensitive zooplankton family and started to increase again after one week.
Likely explanations for the impact on invertebrates (notably cladocerans) is provided: clogging of filtering apparatus by the particles of test substance and subsequent lack of food because of coagulation of phytoplankton and capture of organisms into the floccules. The authors state that toxicity of the aluminium is considered an unlikely cause of organism number reduction but cannot be neglected. The authors also state that while they did not directly monitor fish populations during their work, they never observed fish mortality either during or after application.
In the case of this study the lack of long term effects as testified to by the relatively rapid recoveries of the ecosystem in each case suggest that initially significant concentrations of aluminium reduce below levels that may cause physical or toxic effects to phyto- or zooplankton within a few days (at most), at least at the pHs of these water bodies, which were all around 8.
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.
![ECHA](/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/echa_logo.png)