China Liquid Caustic Soda Market Update: Weak Prices Pressure Solid Caustic Buyers

China's liquid caustic soda market weakened during the week of July 3-9, 2026, with higher inventories, weak chlor-alkali margins and cautious downstream buying weighing on pricing. For overseas buyers, the liquid caustic trend is also relevant to solid caustic procurement because flakes and pearls often respond to the same cost, supply and sentiment signals.

In Shandong, the weekly average price for 32% ion-membrane liquid caustic soda was RMB 623/mt, down 3.9% from the previous week, equivalent to about USD 92/mt based on the working rate of USD 1 = RMB 6.8. The daily closing price for 32% liquid caustic soda in Shandong fell from RMB 635/mt to RMB 618/mt, while 50% liquid caustic soda moved from RMB 1,040/mt to RMB 1,010/mt, or about USD 149/mt.

Related product for buyers: Importers comparing solid caustic options can review Caustic Soda Flakes specifications, packing, COA and shipment information for RFQ preparation. Buyers who prefer pearl-grade solid caustic soda can also check pearl-grade caustic soda for handling and packing comparison.

Key Takeaways for Overseas Buyers

The main pressure came from inventory growth and weaker chlor-alkali profitability. National fixed liquid caustic soda sample inventory among enterprises with capacity of 200,000 mt/year and above reached 530,000 wet mt as of July 9, up 6.67% week on week and 41.62% year on year.

Operating rates increased slightly during the week. China caustic soda sample producers with capacity of 100,000 mt/year and above recorded an average operating rate of 79.6%, up 0.4 percentage points from the previous week. Weekly output was estimated at 803,000 mt, while next-week output was expected to decline as more load reductions and maintenance affected supply.

Solid caustic soda also showed downward movement. Northwest 98% flake caustic soda declined from RMB 2,280/mt to RMB 2,220/mt, down 2.63%, or about USD 326/mt. Market feedback suggested that new orders from major producing regions still had some room for downward adjustment.

Liquid Caustic Soda Market Conditions

In Shandong, both 32% and 50% liquid caustic soda prices moved lower. Weak liquid chlorine pricing intensified pressure on chlor-alkali producers, while alumina-related procurement prices also softened. Although some producers may try to stabilize or raise offers to offset losses, the rebound space appears limited unless downstream buying improves.

East China remained under pressure as supply was relatively sufficient and traditional non-alumina demand showed limited growth. Some cargoes were shipped after earlier low-price long-term orders, but spot-market support remained moderate.

Central China saw some supply reduction from lower operating rates, while high-concentration liquid caustic outbound orders continued. However, broader buying sentiment remained cautious, and downstream users mainly purchased for immediate needs.

Supply, Profit and Inventory Signals

Chlor-alkali margins deteriorated sharply. Shandong chlor-alkali gross profit was estimated at a loss of RMB 286/mt, compared with a smaller loss in the previous period. This negative margin is important for buyers because producer load adjustments may become more frequent if losses persist.

Inventory remained the clearest bearish signal. The nationwide liquid caustic soda tank-capacity ratio rose to 30.65%, up 1.4 percentage points. Higher inventory normally encourages flexible selling, but deeper production losses may partly limit further price cuts.

Solid Caustic Soda and Export Buyer Notes

For distributors and industrial buyers, liquid caustic soda weakness may influence solid caustic soda negotiations, especially for flakes and pearl-grade material used in water treatment, textile, detergent, pulp and chemical processing. However, export quotations should still be confirmed by grade, purity, packing, quantity, destination port and shipment window.

Typical RFQ details should include whether the buyer needs 98%-99% solid caustic soda, bag or jumbo-bag packing, pallet requirements, COA needs, and preferred shipment schedule. Market prices in China can change quickly, so RMB and USD-equivalent figures in this update should be treated as market references, not final export quotations.

Market Outlook

For the coming week, the market expects lower caustic soda output as more producers reduce load or enter maintenance. This may support a stabilization attempt in Shandong 32% liquid caustic soda after the recent decline. Still, non-alumina demand remains limited, and a strong price rebound may be difficult without stronger downstream purchasing.

For solid caustic soda, mainstream producing-region new-order prices may continue to face mild downward pressure. Overseas buyers planning July or August shipment should monitor whether liquid caustic soda stabilizes first, because stabilization in the liquid market may reduce the speed of decline in solid caustic offers.

Procurement Guidance

CHCA Chem can support overseas buyers comparing caustic soda supply from China, including supplier China sourcing, manufacturer coordination, distributor supply, exporter documentation, packing confirmation, shipment planning and COA review. For a workable RFQ, please provide product form, specification, packing, order quantity, destination port and target shipment window.

FAQ

Why did China's liquid caustic soda price fall this week?

Prices fell mainly because inventories increased, downstream demand remained cautious, and weak liquid chlorine pricing pushed chlor-alkali margins into deeper losses.

How is liquid caustic soda related to solid caustic soda prices?

Solid caustic soda is influenced by the broader chlor-alkali chain. When liquid caustic soda weakens and inventory pressure rises, flakes and pearl-grade material often face weaker negotiation sentiment as well.

What was the Shandong 32% liquid caustic soda market level?

The weekly average was RMB 623/mt during July 3-9, 2026, down 3.9% week on week, equal to about USD 92/mt using the working exchange rate of USD 1 = RMB 6.8.

What should importers include in a caustic soda RFQ?

Importers should specify form, purity, packing, quantity, destination port, required documents such as COA, and shipment window so suppliers can quote accurately.

Will caustic soda prices keep falling next week?

Liquid caustic soda may try to stabilize as producer load reductions increase, but solid caustic soda new orders may still have some downward adjustment room if demand stays weak.