Glifosat – frakcja wdychalna [N-(fosfonometylo)glicyna]. Dokumentacja proponowanych wartości dopuszczalnych wielkości narażenia zawodowego

Abstract

Glyphosate is an odorless solid in the form of white crystalline powder. It is an active ingredient in broad-spectrum herbicides, which used at lower doses is a plant growth regulator and desiccant. In Poland since 2001 the MAC value for glyphosate is 10 mg/m3 . Over the past 25 years many new research findings have been published regarding the potential fetotoxicity and carcinogenicity of glyphosate. The European Chemicals Agency (ECHA) reassessed the properties of glyphosate in order to presenting them to the European Food Safety Authority (EFSA). A new harmonized classification of glyphosate was also considered (in accordance with Regulation 1272/2008 of the Parliament and of the Council). In this context, it was necessary to verify the MAC value currently in force in Poland. The basis for calculating the MAC value was the dose of 155 mg/kg bw./day, considered as the NOAEL for systemic effects after oral exposure in mice. No basis for changing the current MAC value (10 mg/m3 ) were found. It should be considered that glyphosate has a very low vapor pressure – exposure occurs to glyphosate dust or aqueous solution only. There are no basis to establish the STEL value and the Biological Exposure Index (BEI). Glyphosate do not meet the criteria for "Skin" notation.