Abstract
A method was proposed for the gas-liquid chromatographic determination of CMMP in emulsifiable concentrates.CMMP was dissolved in acetone and it was analyzed with adding benzylbenzoate as an internal standard with a Shimadzu Gas Chromatograph GC-2B by a thermal conductivity detector, using helium as a carrier gas, maintaining the flow rate to be 50 ml per minute. The column (4 mm × 1 m, stainless steel) used contains 20 weight per cent Silicone Gum SE-30 and 1 weight per cent Emulsogen WS-32 as a stationary phase on the support of Celite 545 and the column temperature was adjusted at 185°C.A calibration curve in the 1.02.5 weight ratio (CMMP/benzylbenzoate) was found to be almost linear. The results of the recovery test were tabulated in Table II.
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