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Abstract 2‐Bisbenzothiazole‐2,2′‐disulfide was heated isothermally with and without sulfur at temperatures between 130 and 178°C for various periods of time and the mixture analyzed by high‐pressure liquid chromatography (HPLC). 2‐Bisbenzothiazole‐2,2′‐monosulfide formed rapidly and 2‐bisbenzothiazole‐2,2′‐polysulfides after an induction period of about 5 min. Polysulfides of higher sulfur rank are formed by the sequential addition of sulfur atoms. 2‐Mercaptobenzothiazole catalyzes the formation of 2‐bisbenzothiazole‐2,2′‐polysulfides and elimates the induction period. Mechanisms for the decomposition of 2‐bisbenzothiazole‐2,2′‐disulfide and the catalytic role of 2‐mercaptobenzothiazole are proposed.
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Gradwell et al. (1995) studied this question.
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