May 11 News – On May 11, the quoted price of food-grade sodium metabisulfite (purity 96.5%) in the Hunan market stood at 4,200 RMB/ton, up 200 RMB/ton. The continuous price increase of sodium metabisulfite is driven by rising raw material costs and growing demand. Chempricehub's assessment of sodium metabisulfite: Bullish-Bearish Score: 1. The quoted price of food-grade sodium metabisulfite in the Hunan market rose by 200 RMB/ton to 4,200 RMB/ton. Supported by both higher raw material costs and increased demand, further upward price expectations remain, which generally benefits spot prices.