Solutions containing 1000 mg kg-1
of allyl isothiocyanate (AITC) in buffers of pH 4, 6, and 8
were
stored at 80 °C and analyzed for the content of AITC, its
isomerization product allyl thiocyanate
(ATC), and 9 other decomposition products. The major reaction
products in alkaline buffers were
allylamine (AA), allyl dithiocarbamate (ADTC), diallylthiourea (DATU),
and carbon disulfide (CDS).
CDS and AA also arose as the major products in buffers of pH 6 and
4. Newly identified
decomposition products of AITC were ADTC, diallylurea (DAU), and
diallyl sulfide (DAS).
Mechanisms explaining the decomposition of AITC are presented and
discussed.
Keywords: Allyl isothiocyanate; degradation products; allyl thiocyanate;
allylamine; diallylthiourea;
diallylurea; allyl dithiocarbamate; allyl allyldithiocarbamate; allyl
mercaptan; diallyl sulfide; diallyl
disulfide; carbon disulfide; HPLC; GLC
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