Phosphorous Acid Commodity Market Intelligence Report (May 27, 2026)

I. Price Dynamics
1. Dimethyl Phosphite
- Benchmark Price: According to ChemNet data as of May 26, the benchmark price for dimethyl phosphite stood at RMB 19,333.33 per metric ton, down 2.52% from the beginning-of-month level of RMB 19,833.33 per metric ton, and remaining within the upper range of the past 12 months (historical high: RMB 20,333.33 per metric ton; historical low: RMB 15,000 per metric ton).
- Price Volatility: Prices remained stable over the past week; however, year-to-date cumulative gains exceeded 10%, primarily supported by rising raw material costs and robust downstream demand for antioxidants.

2. Phosphorous Acid (Industrial Grade)
- Regional Quotations:
- Shandong Province:
- Solid, 99% purity: Zibo city ex-factory price: RMB 7,500 per metric ton; Jinan city market price: RMB 10,800 per metric ton;
- Solid, 98.5% purity: Jinan city market price: RMB 9,000 per metric ton;
- Liquid (80% aqueous solution, equivalent to 98.5% solid content): Jinan city market price: RMB 12,500 per metric ton.
- Hubei Province: Wuhan city domestic quotation for 99% phosphorous acid: RMB 6,500 per metric ton—the lowest nationwide.
- Price Discrepancy: The broad price range in Shandong (RMB 6,500–13,500 per metric ton) reflects variations in purity specifications, brand positioning, and regional supply-demand imbalances.

3. High-End Phosphite Esters
- Tris(isotridecyl) Phosphite (TTDP):
- Prices are influenced by technological barriers and tightening environmental regulations; average domestic prices rose 15% year-on-year in 2026, currently ranging between RMB 25,000–30,000 per metric ton for premium-grade products.
- Leading enterprises—including Changhe Chemical—maintain concentrated production capacity, achieving product purity of 99.5% and free phenol content below 50 ppm, thereby commanding significant pricing power.

II. Market Drivers
1. Demand-Side Factors
- New Energy Vehicles (NEVs): In 2025, China’s NEV output surpassed 18 million units, driving a 15.6% increase in antioxidant demand for polyurethane materials and triggering surging demand for high-end phosphites such as TTDP.
- Environmental Regulations: The revised EU REACH regulation restricts free phenol content to below 100 ppm, accelerating downstream formulation upgrades and boosting demand for high-purity phosphorous acid derivatives.
- Powder Coatings: China’s powder coating output reached 3.2 million metric tons in 2025; TTDP penetration surged from 18% to 43%, underpinning elevated phosphite ester pricing.

2. Supply-Side Factors
- Production Concentration: The domestic TTDP industry’s CR5 (combined market share of the top five firms) reached 58%; industry leaders—including Changhe Chemical and Zhejiang Jinhai Chemical—dominate the sector, leveraging economies of scale to reduce integrated production costs.
- Technological Upgrades: Leading manufacturers have adopted continuous production processes and molecular distillation technologies to enhance product purity and stability, meeting stringent requirements of high-end applications.
- Environmental Pressures: The Ministry of Industry and Information Technology mandates a 12% reduction in comprehensive energy consumption and a 20% cut in wastewater discharge for phosphite ester producers—prompting smaller-scale enterprises to exit the market.

3. Cost-Side Factors
- Raw Material Prices: Fluctuations in phosphate and sulfuric acid prices directly impact phosphorous acid production costs; however, recent stability in these inputs has not exerted significant upward pressure on market prices.
- Logistics Costs: Regional price differentials (e.g., between Shandong and Hubei) are partly attributable to freight expenses, but the premium pricing of high-end products adequately offsets such cost variances.

III. Competitive Landscape
1. Advantages of Leading Enterprises
- Changhe Chemical: TTDP production capacity of 12,000 metric tons per annum; product purity of 99.5%; outstanding hydrolytic stability; key clients include Wanhua Chemical and SI Group.
- Zhejiang Jinhai Chemical: TTDP capacity of 8,000 metric tons per annum; superior thermal stability; export share of 35%, primarily targeting Southeast Asian and Middle Eastern markets.
- Shandong Hualu Hengsheng: Benefits from 80% self-sufficiency in coal-based chemical feedstocks, enabling production costs 8–12% lower than the industry average—though product purity lags behind that of top-tier peers.

2. Challenges Facing SMEs
- Technical Limitations: Most SMEs achieve purity levels below 98%, rendering their products unsuitable for high-end applications.
- Environmental Compliance: Smaller-scale production facilities face heightened risk of elimination; industry-wide capacity utilization is projected to reach 85% in 2026.

IV. Outlook
1. Price Trends
- Short Term: Dimethyl phosphite prices are expected to remain range-bound at elevated levels (RMB 19,000–20,000 per metric ton), supported by raw material cost stability.
- Long Term: Prices for premium phosphite esters (e.g., TTDP) are anticipated to grow annually by 8–10%, driven by technological barriers and increasingly stringent environmental policies.

2. Demand Forecast
- New Energy Vehicles: Annual compound growth rate (CAGR) of NEV production in China is projected at 12% from 2026 to 2030, sustaining long-term demand growth for phosphite esters.
- Powder Coatings: Growing adoption of eco-friendly formulations will drive annual phosphorous acid derivative demand growth of 6–8%.

3. Supply Forecast
- Capacity Expansion: Leading enterprises plan to add 20,000 metric tons per annum of new TTDP capacity; total domestic TTDP capacity is expected to exceed 100,000 metric tons by 2027.
- Industry Consolidation: Accelerated exit of SMEs will elevate the CR5 to approximately 70%, further intensifying market concentration.

4. Risk Factors
- Raw Material Price Volatility: Sharp increases in phosphate or sulfuric acid prices could compress profit margins.
- Tightening Environmental Regulations: Stricter emissions standards may raise operational compliance costs.
- International Trade Frictions: Export markets may be impacted by geopolitical developments, including tariff adjustments and evolving trade barriers.