| 摘要 |
The invention relates to a method for producing phosphonomethylglycin, by bringing together in a reaction space N-phosmonomethyl iminodiacetic acid-N- oxide and a catalytic quantity of at least one of the following catalysts: thionyl halogenide, diathionite of ammonium or an alkali metal, a dialkyl sulphite, sulphur dichloride, sulphurous acid, sulphur dioxide. The dosage o f the N-phosphonomethyl iminodiacetic acid-N-oxide will be such that at least 50 % of the N-oxide put in the reaction space will be transformed.
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