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Typically the purity of disodium fluorophosphates is >90% (dry weight, after excluding water). All impurities present at >1% are other inorganic phosphates or other related inorganic substances, similar to the registered substance, and which do not significantly affect its toxicological and ecotoxicological properties. There are no hazardous impurities present within the substance at levels >0.1%.

 

Disodium fluorophosphate has a melting point of >450°C and is considered to be very soluble in water (696 g/L of solution at 20.0 ± 0.5°C, pH>=7.1, pH<=7.2). The effect of temperature over the range 10 to 30°C has been considered not to have had a significant influence on the observed solubility of the test material (range 696 to 704 g/L).

Additionally, an assessment of the solubility of the test material over the environmentally relevant pH range of 4 to 9 gave observed solubility's and final solution pH’s similar to those obtained using unbuffered water. Thus, it can be anticipated that the water solubility of the test material over the pH range 4 to 9 would be constant, essentially due to the low buffering activities seen in the environment.

Disodium fluorophosphate is not considered to possess any of the following hazardous physico-chemical properties: autoflammability and/or self-ignition, flammability, explosiveness and oxidising properties.