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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 236-715-1 | CAS number: 13466-20-1
- 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
Endpoint summary
Administrative data
Description of key information
Additional information
Barium bis(dihydrogen orthophosphate) is an inorganic phosphate salt. The substance is well soluble in water (WS: 27.79 ± 0.63 g/L at 20 °C and pH 2.9 - 3.0). When released to water and in biological systems the substance dissociates basically to phosphate species and barium ion. Barium and phosphorus are generally abundant natural elements that are ubiquitous in the aqueous and terrestrial environment. Barium is found in nature as a component of minerals and may enter the environment through weathering of rocks and minerals (ATSDR, 2007). Under natural conditions barium has oxidation state of +2 and has the character of heavier alkali earth elements, e.g. Ca. Phosphorus retention in soils is influenced by the form of P released. Triphosphate is a condensed phosphorus species with three phosphate units. Busman (1984) studied the adsorption of polyphosphate by soils and clay minerals and indicated that affinity of polyphosphate increased with increasing length of phosphate units. Triphosphate was more strongly adsorbed than orthophosphate, whereas mobility and solubility of triphosphate increased by hydrolysis in soils to orthophosphate.
Orthophosphates are also formed by natural hydrolysis of human urine and faeces, animal wastes, food and organic wastes, mineral fertilisers, bacterial recycling of organic materials in ecosystems, etc. Phosphates are bio-assimilated by the bacterial populations and the aquatic plants and algae found in these different compartments and are an essential nutrient (food element) for plants, and stimulate the growth of water plants (macrophytes) and/or algae (phytoplankton) if they represent the growth-limiting factor.
Distribution of barium bis(dihydrogen orthophosphate) to air is not likely. The substance is an inorganic solid and can thus be considered non-volatile. Due to the low vapour pressure is a significant release to the atmosphere not anticipated.
The potential of barium bis(dihydrogen orthophosphate) for bioaccumulation and secondary poisoning is low. A study investigating the accumulation of trace elements in bluegill tissue determined a BCF for barium salt of 74.4 μg/g wet weight of bluegill tissue (Lepomis macrochirus, male carcass). An accumulation of phosphate in organisms is unlikely to pose a hazard potential, as the phosphate anion is an essential micronutrient for many organisms and the internal concentration is regulated biologically.
Reference
ATSDR, Agency for Toxic Substances and Disease Registry, 2007, Toxicological profile for Barium and Barium compounds. U.S.Department of Health and Human Services.
Busman, Lowell Marion (1984), "Behavior of polyphosphates in soils ". Retrospective Theses and Dissertations. Paper 8979.
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.