Sodium thiosulfate pentahydrate

Sodium Thiosulfate Pentahydrate (‘Big Soda’, Sodium Hyposulfite) — Market Dynamics Intelligence and Analytical Forecast

I. Market Price Dynamics

1. Recent Price Volatility:
- Between May 22 and June 3, 2026, the market price of sodium thiosulfate pentahydrate exhibited fluctuations. For example, Henan Kaijie Water Treatment Co., Ltd. quoted RMB 1,500 per metric ton for its 99% purity product, whereas Henan Qianyuexing Chemical Technology Co., Ltd. quoted RMB 950–1,050 per metric ton for its 99% purity product.
- Baozhen Chemical (Shandong) Co., Ltd. quoted RMB 2,000 per metric ton for its 98% purity product, reflecting notable price differentiation across purity grades.

2. Price Range:
- Analytical reagent (AR)-grade products (≥99.0% purity, 500 g packaging) ranged in price from RMB 3.33 to RMB 5,500, with significant variation attributable to purity level, brand reputation, supplier positioning, and regional factors.
- In the bulk commodity market, the price for 98% purity industrial-grade products stood at approximately RMB 1,300 per metric ton, representing the prevailing transaction level for large-volume industrial procurement.

II. Market Supply and Demand Situation

1. Production Capacity and Output:
- China’s effective annual production capacity for sodium thiosulfate pentahydrate totals 486,000 metric tons; however, actual output amounts to only 312,000 metric tons, yielding a capacity utilization rate of 64.2%, highlighting a structural paradox of both overcapacity and insufficient effective supply.
- Regional production capacity is highly concentrated in Shandong, Jiangsu, and Hebei provinces—accounting collectively for 58.7% of national capacity—while supply remains inadequate in South China and Northwest China, necessitating cross-regional logistics.

2. Demand Structure:
- Downstream applications are broad-based, spanning textile, papermaking, chemical, and water treatment industries. Specifically:
Textile industry: used as a bleaching agent and decolorizing agent;
Papermaking industry: employed as a deinking agent for recycled paper and a paper bleaching agent;
Chemical industry: utilized as a synthetic intermediate and metal ion chelating agent;
Water treatment: applied as a water treatment agent and disinfectant.
- The pharmaceutical sector exhibits strong growth potential—particularly for use in antidotes and anti-allergy medications.

3. Demand Fluctuations:
- Demand from the dyeing and printing sector has declined due to shifts in global trade dynamics and tightening environmental regulations.
- Electroplating demand has contracted as stricter discharge standards have reduced reliance on traditional chemical precipitation methods.
- The photographic industry continues its long-term decline.
- Conversely, pharmaceutical demand is expanding—especially for antidote and anti-allergy formulations—and emerging applications driven by environmental policy—such as wastewater treatment and saline-alkali soil remediation—are gaining traction.

III. Raw Material Supply and Cost Structure

1. Raw Material Price Volatility:
- Sulfur, the primary raw material for sodium thiosulfate pentahydrate, exhibits a high import dependency ratio of 68%. Its price volatility significantly impacts production costs. In 2024, sulfur prices surged 23% month-on-month; compounded by regional shortages of liquid sulfur dioxide and rising energy costs, manufacturers face mounting cost pressures.
- Raw materials such as soda ash and lime are also subject to domestic chemical industry policies and increasingly stringent environmental requirements, further inflating production costs.

2. Environmental Compliance Costs:
- Stricter environmental regulations have substantially increased compliance burdens. Following implementation of the ‘Emission Standards for Inorganic Chemical Industries’, average additional environmental investment per metric ton of product rose by RMB 180–250, pushing total annual industry-wide compliance expenditures beyond RMB 920 million.

IV. Market Trend Analysis and Forecast

1. Price Trend:
- Driven by raw material price volatility and escalating environmental compliance costs, sodium thiosulfate pentahydrate prices are projected to rise moderately, with average annual price increases expected to remain within the 3–4% range.
- Intensifying competition will prompt enterprises to prioritize cost control and operational efficiency improvements.

2. Supply–Demand Relationship:
- The structural imbalance—characterized by overcapacity coexisting with insufficient effective supply—will persist in the near term. Geographic concentration of production capacity contributes to a complex and fragmented competitive landscape.
- Looking ahead, continued expansion of downstream applications—coupled with policy-driven growth in wastewater treatment and saline-alkali soil remediation—will propel annual demand growth at a compound rate of 5–6%.

3. Capacity Optimization and Technological Innovation:
- Over the next five years, the industry is expected to accelerate its transformation toward greener, more intensive, and higher-value operations. Leading enterprises are likely to enhance competitiveness through capacity replacement, regional rebalancing, and circular economy models.
- With advances in intelligent manufacturing, single-factory capacity is projected to increase by 30–45%, lifting aggregate industry capacity beyond 520,000 metric tons per year.
- Technological innovation will focus increasingly on green and low-carbon processes, intelligent production systems, and advanced material development—aimed at strengthening product competitiveness and enhancing value-added margins.

4. Export Potential:
- Growing infrastructure and mining investments along the Belt and Road Initiative (BRI) countries present substantial export opportunities. By 2030, exports are forecast to account for 18–22% of total domestic production.