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With growing agronomic demand for ‘sulphur as a nutrient’, ammonium sulphate (AS) has a key place in this delivery, whether it is directly applied, blended or used as a feedstock in the production of more advanced N+S products or compound NPK+S. Join Matt Lisley – Senior Analyst and Tim Cheyne - VP, Fertilizers, as they discuss AS production routes, future capacity additions coming on-stream a price mechanisms. We move on to the impact of Chinese caprolactam and compaction capacity on price premiums for different grades and quality of AS product; and finish with an intriguing look at the recent news surrounding the environmental impact of phosphogypsum, and how ammonium sulphate may play a part in the circular economy.