Rising Inventories Drive China Isothiazolinone Prices Down 4.5%

China's Isothiazolinone market softened in June as fragile demand met expanding export availability, pressuring producers to trim offers. Early in the month, producers kept operating rates stable and logistics smooth, preserving Isothiazolinone export volumes. By mid-month, rising inventories and cautious buying prompted exporters to lower offers to stay competitive, while late-month conditions—ample production and softer overseas demand—accentuated downward sentiment. Market signals indicate subdued procurement in water-treatment and coatings, with Isothiazolinone exporters prioritizing stock clearance over price defense. Demand-side dynamics weighed on price direction; industrial water-treatment activity remained weak as procurement was delayed, and coatings demand softened with export buyers reducing fresh purchases due to inventory adequacy. Supply dynamics amplified the downshift, with steady feedstock availability and stable utility costs supporting production and higher inventories. Producers discounted Isothiazolinone offers; MIT 14% FOB Shanghai moved lower. The near-term view for Isothiazolinone is mixed, with modest downward pressure into mid-summer and late-summer, followed by a potential recovery in early autumn, before a renewed dip during year-end restocking across the market.