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Tetrakis Hydroxymethyl Phosphonium Sulfate prices in Germany, the highest-cost reporting region, rose 5.9% in H1 2026, climbing from USD 3.74/KG in Q1 to USD 3.96/KG by Q2 as recovering oilfield produced water biocide, cooling tower treatment, and textile flame retardant formulation procurement and firmer phosphine and formaldehyde synthesis feedstock costs reversed the brief Q3 2025 market dip. Globally, the average rose from USD 2.652/KG in Q1 to USD 2.811/KG in Q2, a 6.0% gain. For H2 2026, a global average of USD 2.75-3.09/KG is expected, with continued firming on Middle East supply disruptions and growing oilfield biocide, cooling water treatment, and textile flame retardant sector demand globally.
Tetrakis Hydroxymethyl Phosphonium Sulfate, with formula [(HOCH2)4P]2 SO4, is an organophosphorus biocide produced by reaction of phosphine gas with four molar equivalents of formaldehyde under controlled aqueous conditions to form the tetrakis hydroxymethyl phosphonium cation, subsequently treated with sulphuric acid to yield the sulfate salt. The four reactive hydroxymethyl groups on the tetravalent phosphonium centre cross-link microbial proteins and nucleic acids, producing rapid bactericidal action across Gram-positive and Gram-negative bacteria, sulphate-reducing bacteria, and acid-producing bacteria at low concentrations. The largest pull comes from oilfield water injection and produced water biocide for sulphate-reducing bacteria control that causes reservoir souring and microbiologically influenced corrosion. Cooling water tower Legionella and biofilm biocide, cotton and cellulosic fabric flame retardant through the THPS-urea polymer process, and papermaking antimicrobial treatment add further demand. Cosmetic and personal care preservative and wood treatment antimicrobial applications add consistent further volumes. Phosphine and formaldehyde feedstock costs, oilfield and water treatment sector output, and regional production capacity all feed into the price.
The balance of supply and demand for Tetrakis Hydroxymethyl Phosphonium Sulfate through H2 2026 leans moderately firm. Phosphine and formaldehyde synthesis feedstock costs firmed from Middle East energy disruptions. Oilfield biocide, cooling water treatment, and textile flame retardant demand are growing with expanding oil production and water treatment infrastructure globally.
The main upside risk is phosphine and formaldehyde feedstock cost spikes alongside accelerating oilfield souring remediation demand. The main downside risk is glutaraldehyde and alternative biocide competition and reduced cooling tower operations maintaining price pressure below forecast.
| Region | Price Forecast (USD/KG) | Key Driver |
| Global Average | 2.75 - 3.09 | Feedstock cost firming and oilfield/cooling/textile demand |
| United States | 2.91 - 3.25 | Steady oilfield and cooling water demand holds firm |
| China | 2.02 - 2.36 | Competitive production keeps it the most affordable |
| Germany | 3.58 - 3.92 | High feedstock and energy costs keep it the most expensive |
| India | 2.78 - 3.12 | Growing oilfield and textile demand holds a firm middle |
US Tetrakis Hydroxymethyl Phosphonium Sulfate prices averaged USD 3.22/KG in Q2 2026, up 5.9% from USD 3.04/KG in Q1 2026. Firmer feedstock costs and recovering oilfield and cooling water biocide procurement drove consistent buying.
Why did the price of Tetrakis Hydroxymethyl Phosphonium Sulfate change in Q2 2026 in the United States?
Firmer phosphine and formaldehyde feedstock costs raised the biocide production floor. Oilfield SRB control, cooling tower Legionella treatment, and textile flame retardant procurement lifted buying. Papermaking process water treatment demand provided additional support near USD 3.22/KG.
Chinese Tetrakis Hydroxymethyl Phosphonium Sulfate prices averaged USD 2.24/KG in Q2 2026, up 6.2% from USD 2.11/KG in Q1 2026, the lowest among the tracked markets. Spring oilfield, cooling, and textile export and domestic procurement lifted buying. Firmer domestic feedstock costs raised the floor despite competitive domestic production capacity.
Why did the price of Tetrakis Hydroxymethyl Phosphonium Sulfate change in Q2 2026 in China?
Spring oilfield and cooling water export and domestic procurement lifted buying. Firmer domestic phosphine and formaldehyde costs raised the production floor. Competitive domestic capacity kept China the most affordable source.
German Tetrakis Hydroxymethyl Phosphonium Sulfate prices averaged USD 3.96/KG in Q2 2026, up 5.9% from USD 3.74/KG in Q1 2026, the highest among the tracked markets. Higher phosphine and formaldehyde feedstock and energy costs elevated European production economics. Recovering oilfield, cooling, and textile demand maintained buying.
Why did the price of Tetrakis Hydroxymethyl Phosphonium Sulfate change in Q2 2026 in Germany?
Higher phosphine and formaldehyde feedstock and energy costs elevated European production economics. Middle East supply disruptions added cost premiums. Recovering oilfield SRB, cooling tower, and textile flame retardant procurement maintained buying near USD 3.96/KG.
Indian Tetrakis Hydroxymethyl Phosphonium Sulfate prices averaged USD 3.07/KG in Q2 2026, up 5.9% from USD 2.90/KG in Q1 2026. Growing oilfield, cooling water, and textile export and domestic demand supported buying. Firmer feedstock import costs raised the production floor.
Why did the price of Tetrakis Hydroxymethyl Phosphonium Sulfate change in Q2 2026 in India?
Growing oilfield SRB biocide and textile flame retardant export and domestic procurement lifted buying. Firmer phosphine and formaldehyde import costs raised the floor. Cooling tower and paper process water demand provided additional support near USD 3.07/KG.
US prices averaged USD 3.04/KG in Q1 2026, recovering about 2.1% from Q4 2025. Recovering oilfield and cooling water demand and firming feedstock costs held the market near USD 3.04/KG.
Why did the price of Tetrakis Hydroxymethyl Phosphonium Sulfate change in Q1 2026 in the United States?
Recovering oilfield SRB and cooling tower biocide procurement maintained buying. Firming phosphine and formaldehyde costs raised the production floor. The market recovered to USD 3.04/KG from the Q3 2025 level.
Chinese prices averaged USD 2.11/KG in Q1 2026, recovering about 2.2% from Q4 2025. Post-Lunar New Year oilfield and cooling water restocking held the market near USD 2.11/KG.
Why did the price of Tetrakis Hydroxymethyl Phosphonium Sulfate change in Q1 2026 in China?
Post-Lunar New Year oilfield and cooling water restocking lifted buying. Firming domestic feedstock costs raised the floor. The market recovered to USD 2.11/KG from the Q3 level.
German prices averaged USD 3.74/KG in Q1 2026, recovering about 2.1% from Q4 2025. Recovering oilfield, cooling, and textile demand and firming feedstock and energy costs held the market near USD 3.74/KG.
Why did the price of Tetrakis Hydroxymethyl Phosphonium Sulfate change in Q1 2026 in Germany?
Recovering oilfield, cooling tower, and textile procurement maintained buying. Firming feedstock and energy costs raised the floor. The market recovered to USD 3.74/KG from the Q3 2025 level.
Indian prices averaged USD 2.90/KG in Q1 2026, recovering about 2.1% from Q4 2025. Growing oilfield and textile demand and firmer feedstock import costs held the market near USD 2.90/KG.
Why did the price of Tetrakis Hydroxymethyl Phosphonium Sulfate change in Q1 2026 in India?
Growing oilfield and textile procurement maintained buying. Firming phosphine and formaldehyde import costs raised the floor. The market recovered to USD 2.90/KG from the Q3 level.
Global Tetrakis Hydroxymethyl Phosphonium Sulfate prices dipped in Q3 2025 on feedstock softening before recovering through Q4 2025, Q1 2026, and Q2 2026. The average eased from USD 2.60/KG in Q2 2025 to USD 2.548/KG in Q3, then firmed to USD 2.599/KG in Q4, USD 2.652/KG in Q1 2026, and USD 2.811/KG in Q2 2026, a net gain of about 8.1% over the window. Phosphine and formaldehyde feedstock cost cycles and oilfield biocide, cooling water, and textile procurement drove the recovery.
| Quarter | Price (USD/KG) | QoQ Change | Direction |
| Q2 2026 | 2.811 | +6.0% | ↑ Rising |
| Q1 2026 | 2.652 | +2.0% | ↑ Rising |
| Q4 2025 | 2.599 | +2.0% | ↑ Rising |
| Q3 2025 | 2.548 | -2.0% | ↓ Falling |
| Q2 2025 | 2.600 | - | - Stable |
| Q3 2026 | In Progress | - | - In Progress |
Tetrakis Hydroxymethyl Phosphonium Sulfate prices declined modestly in Q3 2025 on feedstock softening before recovering through Q4. The global average opened near USD 2.67/KG in Q1 2025 and closed at USD 2.599/KG in Q4, a marginal full-year decline of about 2.7%. Feedstock cost dynamics and oilfield biocide, cooling water, and textile procurement maintained market conditions through the year.
US prices fell from about USD 3.07/KG in Q1 2025 to USD 2.98/KG by Q4, a decline of 2.9%. Soft feedstock costs maintained moderate downward pressure through the year.
Chinese prices fell from roughly USD 2.13/KG in Q1 2025 to USD 2.07/KG by Q4, a decline of 2.8%. Soft feedstock costs and competitive capacity maintained the lowest level.
German prices fell from about USD 3.78/KG in Q1 2025 to USD 3.67/KG by Q4, a decline of 2.9%. Soft feedstock and energy costs maintained moderate downward pressure.
Indian prices fell from roughly USD 2.93/KG in Q1 2025 to USD 2.84/KG by Q4, a decline of 3.1%. Soft feedstock import costs maintained downward pressure through the year.
Expert Market Research: Your Source for Real-Time Tetrakis Hydroxymethyl Phosphonium Sulfate Price Intelligence
Expert Market Research tracks Tetrakis Hydroxymethyl Phosphonium Sulfate prices continuously across every major producing and consuming region. The team traces causation through phosphine and formaldehyde feedstock economics, oilfield biocide and cooling water treatment procurement cycles, and regional production capacity. Contact Expert Market Research today for Tetrakis Hydroxymethyl Phosphonium Sulfate pricing data, bespoke market analysis, and strategic procurement advisory.
Oilfield water injection and produced water biocide for control of sulphate-reducing bacteria that cause reservoir souring, microbiologically influenced corrosion, and permeability damage takes the largest share globally. Cooling water tower Legionella and biofilm biocide, durable cotton and cellulosic fabric flame retardant through the THPS-urea polymer network process, and papermaking process water antimicrobial treatment also consume significant volumes globally.
The Q2 2026 average was USD 3.22/KG in the United States, USD 2.24/KG in China, USD 3.96/KG in Germany, and USD 3.07/KG in India. Germany remains the highest-priced market.
The global average rose from USD 2.652/KG in Q1 to about USD 2.811/KG in Q2, a gain of around 6.0%. Recovering oilfield and cooling water demand and firmer phosphine and formaldehyde costs drove the H1 firming from the Q3 2025 level.
Phosphine and formaldehyde synthesis feedstock cost softening reduced the biocide production floor. Seasonal oilfield and cooling water procurement moderation reduced urgency before the Q4 2025 and H1 2026 recovery.
The global average is expected in the USD 2.75 to 3.09/KG range for H2 2026, with continued firming as feedstock costs stay elevated and oilfield biocide, cooling water, and textile flame retardant demand grows globally.
Germany sits highest on feedstock and energy costs, the United States and India hold a firm middle on oilfield and water treatment demand, and China prices comparatively lower on competitive domestic production capacity.
This report is updated monthly. For real-time pricing intelligence, contact the Expert Market Research team directly.
Prices respond mainly to phosphine and formaldehyde feedstock costs, oilfield sour water injection volumes, and cooling water treatment capacity utilisation. Phosphine and methanol prices and oilfield production data are key upstream signals.
North America, Europe, and China are the major producers. Any phosphine or formaldehyde cost shift ripples across markets within one quarter.
Buyers can use quarterly trends and forecasts to time oilfield and cooling water biocide contracts around feedstock cost cycles, build cover when phosphine signals tighten, and monitor oilfield water injection volumes as the primary demand signal.
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