In this report, pool two ‘Materials & products in industry’ (MP) of the Swedish National Nitrogen Budget (NNB) is presented. The MP pool of NNB is one of the eight major pools defined by the Task Force of Reactive Nitrogen (TFRN) which together represent a total national nitrogen budget capturing all major flows of all forms of reactive nitrogen (Nr) within a country and across the country borders. The methodology to calculate NNB has been provided by the Expert Panel on Nitrogen Budgets (EPNB) in the Annexes to the ECE/EB.AIR/119 – “Guidance document on national nitrogen budgets".The three most important sources of data were Statistics Sweden (SCB), The Swedish Board of Agriculture (Jordbruksverket) and Swedish Chemicals Agency (Kemikalieinspektionen).
Data on some chemicals were seen as industrial secrets or - in case of e.g. explosives – as non-public data. The major flows of Nr to and from MP, were when possible calculated for the year 2015. The MP pool is dominated by Nr flows associated with chemicals, food and feed. These flows are between MP pool and pools ‘Rest of the world’ (i.e. outside Sweden), ‘Agriculture’ and ‘Humans & settlements’. The total input of reactive nitrogen to MP was 696 kt N and the outputs 636 kt N. Of the eight pools considered in a complete national N budget, the MP pool is rather central. MP has the largest flows of Nr in and out of the pool and it includes the major Nr flows associated with import and export of chemicals, products to and from the pool Agriculture, and Nr flows to the pool Humans and settlements.