Moreover, the reduction or decomposition products and intermediate compounds of these azo dyestuffs are introduced, including their chemical names, toxicology and the types of toxicity.

• 本文就欧盟针对部分对于人体有害的偶氮染料的禁用背景及其还原或分解产物和中间体的化学名称、毒性原理和毒性类型作了简要介绍。