Clariant tries, wherever possible, to use recycled materials in production. However, the percentage is low due to the nature of the production process, as recycled raw materials very often cannot be used on account of the cleanliness requirements. Their use is also not possible in specialty chemicals such as those produced by Clariant due to safety reasons. Clariant uses almost only fresh raw materials for direct precursors for the reasons mentioned above. However, there is an internal cycle that is an integral part of the production process for auxiliaries and for product purification and separation. The material in such recycle streams is used several times in order to deliver the desired energy and resource savings. A meaningful detection of the corresponding amounts is not possible with justifiable effort as these cycles are an integral part of the overall process.