Optical brighteners - for paper production (market for optical brighteners - for paper production)

Emissions generated by the activity within the product supply chain as described in ecoinvent v3.10. The product 'optical brighteners for paper production' is a fluorescent whitening agents i.e. a substance that in solution or applied to a substrate absorbs ultraviolet light and reemits this absorbed energy as blue fluorescent light. Thus these substances compensate for the aesthetically undesirable yellowish cast found in white industrial substrates - e.g. in paper or plastics (Siegrist et al. (2003)). A variety of different substances are in used as optical brighteners. The product 'optical brighteners for paper production' represents a 1:1 mixture of fluorescent whitening agent DAS1 triazinylaminostilben type and fluorescent whitening agent distyrylbiphenyl type The cut-off classification is allocatable product. The activity type is market activity. The reference product amount is 1.