QUALITATIVE AND QUANTITATIVE-DETERMINATION OF THERMAL-DEGRADATION PRODUCTS OF TYPE-C HYDRAULIC FLUIDS

A qualitative and quantitative analysis of the thermal decomposition m ixtures of some type C hydraulic fluids has been done. The decompositi on products were identified by gas chromatography/mass spectrometry. D ue to the nature of some decomposition compounds, a specific pre-colum n derivatization technique in combination with a well-adapted capillar y column was necessary. Type C hydraulic fluids only slightly decompos e in the temperature range from 500 to 700-degrees-C, resulting in low levels of decomposition compounds present in the inhalation chamber i n which laboratory animals are placed. The quantitative composition su pports earlier research on the acute inhalation toxicity testing on la boratory animals.