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1. BTEX in air were adsorbed by active carbon tube, replaced carbon bisulfide by dichloromethane as reagent, analyzed by using Capillary GC-FID .
2. Locling the screw must spread enough oil, please notice all oil should not contain molybdenum bisulfide additive.
3. Objective To solve the problem that the content of bisulfide in captopril is easily higher than limit.
4. The testing methods for element sulfur, hydrogen sulfide, mercaptan sulfur, bisulfide, corrosive sulfide, total active sulfur and single active sulfide were reviewed.
5. Tetraethyl thiuram disulfide was synthesized one step from diethylamine and carbon bisulfide with hydrogen peroxide (27.5%) as oxidant.
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