I think on glyphosate, which is used in different formulations of salts.
There are mostly this glyphosate salts used:
isopropylamine salt (IPA)
diammonium salt
dimethylammonium salt
ethanolamine salt
monoammonium salt
potassium salt
sesquisodium (or sodium) salt
trimethylsulfonium salt (glyphosatetrimesium)
For the bio assey tests it seem there will be only the pure acid form of glyphosate proved. It has a far lower reactivity and effiency to kill plants. The above mentioned salts are used for herbicides as the have far stronger herbizide effieniency.
Are therfore the bioassey tests which use only the glyphosate acid form in official the registration, producing bias and erroneous illusive results for toxicological tests?
Do you think that the glyphosate LD50 values could be therefore a fraudulent misrepresentation and trickery in the registration of pesticides?
Best thanks for your ideas! Johann HUMER, Austria
In some cases, you are testing ion pairs and this form can help the bioaccessibility of active pinciple. This is true. We have also to cosider solubility and ionization. We need to control which kind of salts has been used for the ecotox tests used in risk asssessment. There is also the problem of formulates, which is one of the reason of the differences in carcinogenicity evaluation between IARC and ECHA
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