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Diss Factsheets
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EC number: 232-075-2 | CAS number: 7785-21-9
- 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 fish
Administrative data
Link to relevant study record(s)
Description of key information
One key study for acute toxicity of diammonium phosphate to fish is available. The study was conducted according to the guideline "Standard Methods for the Examination of Water and Wastewater" (American Public Health Association) and is judged reliable.
Read across from diammonium phosphate to magnesium ammonium phosphate is considered justified based on following background:
Since both the magnesium ammonium phosphate and diammonium phosphate dissociate to their respective ammonium, (magnesium) and phosphate ions, it is considered acceptable to approach the assessment of magnesium ammonium phosphate based on the individual components.
Since Diammonium phosphate is very soluble in water and therefore much more bioavailable (588 g/l; The Merck Index“, 14th Edition, M. J. O’Neil (Editor), Merck Research Laboratories, Division of Merck & Co., Inc., Whitehouse Station, NY, USA (2006)) read across to the only slightly soluble magnesium ammonium phosphate (0.1 g/l) is considered as worst-case assumption. The only difference between the two inorganic salts is the replacement of one ammonia ion and one hydrogen ion by magnesium.
Magnesium from magnesium ammonium phosphate is not assumed to pose an additional risk for acute ecotoxicity since it is an essential mineral and ubiquitous present in food. Magnesium is the eighth most abundant element, constitutes about 2% af the Earth's crust by weight and is an essential element in biological systems, present in every cell type and organism.
The most common source of magnesium in groundwater is through the erosion of rocks, such as dolomite and minerals, such as magnesite. It is also
naturally present in sea water and salt deposits. It is found naturally in many foods such as vegetables, nuts, grains, fish and dairy products.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 1 700 mg/L
Additional information
The reported study has Klimisch score 2 and was conducted after "Standard Methods for the Examination of Water and Wastewater" (American Public Health Association). The 96h LC50 of diammoniumphosphate is 1700 mg/l. The LC50 for fry was selected since life stage phases are more sensitive than fish.
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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