The U.S. Tartaric Acid market experienced gains in the first two weeks of September 2025 and then softened in the third week. Initial price gains were spurred by disruptions in ocean freight such as blank sailings, heavy congestion at key Asian ports, and reconfiguring capacity. Buyers also cleared higher-than-average inventories from previous shipments, and tariff uncertainty led most to delay ordering new material. Preparations for China's Golden Week also tightened supply, and selective buying and marginal price rises were maintained despite weak downstream demand. In mid-September, prices also relaxed marginally because well-supplied warehouses and restricted new imports offset the market. Prices should stay firm through the rest of September underpinned by high inventories and soft seasonal demand. Looking forward to Q4 2025, sustained freight disruptions, port congestion, and reluctant purchasing in anticipation of tariffs changes could exert slow-rising upward pressure on U.S. Tartaric Acid prices.
