Calcium Hydroxide Price November 2025: Market Outlook Shows New Price Surges Across Global Regions

Calcium hydroxide (Ca(OH)2), commonly known as slaked lime or hydrated lime, is an inorganic compound formed by the reaction of calcium oxide (quicklime) with water, appearing as a white, odorless powder or crystalline solid that is slightly soluble in water. Given its essential role in construction for making mortar, plaster, and cement, water treatment and environmental applications for neutralizing acidic wastewater, flue gas desulfurization, food processing, paper manufacturing, and metallurgy, pricing remains highly sensitive to construction activity, environmental regulation enforcement, and calcium oxide feedstock costs. November 2025 witnessed robust upward price movements across all major regions as strong demand from construction, environmental, and industrial sectors combined with supply constraints to create sustained bullish market sentiment, with Northeast Asia leading gains at 25.0%.

Global Market Overview:

Globally, the calcium hydroxide industry reached 34.74 Million Tons in 2025. Projections suggest the market could grow to 47.65 Million Tons by 2034, with a compound annual growth rate (CAGR) of 3.57% during 2026-2034. Growth is driven by increasing applications in construction materials, wastewater treatment, and flue gas desulfurization, along with rising usage in the paper, food processing, and chemical sectors across both developed and emerging economies. Calcium hydroxide's versatility as an alkaline compound and its binding properties make it a critical material across multiple industrial applications.

Calcium Hydroxide Price Trend November 2025:

Regional prices (USD per kilogram) and month-over-month change:

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What Moved Prices:

• Northeast Asia: Calcium hydroxide prices surged dramatically, driven by firm demand from construction and environmental applications that remained robust throughout the period. Stronger procurement activity in water treatment and flue gas desulfurization processes provided sustained buying momentum, while steady growth in the construction materials sector added significant support. Limited supply disruptions at regional plants contributed to upward pressure as availability tightened relative to strong consumption patterns, ensuring stable bullish sentiment that drove the exceptional 25.0% price gain.
• Europe: Calcium hydroxide prices recorded solid gains despite earlier quarterly weakness, rebounding from subdued activity as demand conditions improved in November. The recovery reflected strengthening procurement after earlier softness in construction and paper industries, with balanced trade flows and stable feedstock availability supporting the upward movement. Market sentiment shifted positively as industrial demand recovered from seasonal patterns, driving the 10.6% monthly increase.
• North America: Prices moved upward modestly, supported by resilient demand from construction, chemicals, and environmental sectors that maintained consistent consumption levels. Solid procurement in wastewater treatment and metallurgy applications provided baseline support, while steady growth in infrastructure projects further reinforced pricing momentum. Adequate supply ensured that price gains remained moderate compared to other regions, though competitive market dynamics and firm end-user demand encouraged sustained procurement activity driving the marginal upward movement.

Drivers Influencing the Market:

Several factors continue to shape calcium hydroxide pricing and market behavior:

• Construction Materials and Infrastructure Demand

Construction activity represents a major consumption driver for calcium hydroxide, utilized extensively in mortar, plaster, cement production, and various building materials for its superior binding properties. Infrastructure development, residential construction, commercial building projects, and public works investments directly affect consumption patterns. Steady growth in the construction materials sector in Northeast Asia and infrastructure project activity in North America supported November's price gains across regions.

• Environmental Applications and Wastewater Treatment

Environmental regulations and water treatment requirements drive significant calcium hydroxide demand for neutralizing acidic wastewater, removing impurities, and treating industrial effluents. Stricter environmental standards, municipal wastewater infrastructure, and industrial compliance requirements create sustained consumption. Stronger procurement activity in water treatment processes across Northeast Asia and solid consumption in North American wastewater treatment applications supported firm demand fundamentals.

• Flue Gas Desulfurization and Air Quality Control

Power generation facilities and industrial plants utilize calcium hydroxide extensively for flue gas desulfurization (FGD) systems to remove sulfur dioxide emissions and comply with air quality regulations. Coal-fired power plant operations, industrial emissions control requirements, and environmental compliance mandates drive consumption. Robust demand from flue gas desulfurization processes in Northeast Asia contributed significantly to the region's exceptional price surge.

• Calcium Oxide Feedstock Costs and Production Economics

Calcium hydroxide production depends on calcium oxide (quicklime) availability and costs, as it is produced through the hydration reaction of quicklime with water. Limestone availability, kiln fuel costs, energy prices for calcination processes, and quicklime market dynamics directly influence production economics. Feedstock cost pressures and energy costs affect producer margins and support pricing adjustments across regions.

• Supply Constraints and Production Capacity

Regional production capacity, plant operating rates, maintenance schedules, and supply chain efficiency influence calcium hydroxide availability. Limited supply disruptions at regional plants in Northeast Asia tightened availability relative to strong demand, creating significant upward price pressure. Production capacity utilization and supply reliability materially affect regional market balances.

• Paper Manufacturing and Chemical Industry Demand

Paper production utilizes calcium hydroxide in pulping processes and chemical treatment, while chemical industries employ it for various synthesis applications and pH control. Paper industry activity, chemical manufacturing output, and industrial production levels influence consumption patterns. Demand variations from these sectors contribute to regional pricing dynamics.

• Food Processing and Sugar Refining Applications

Food-grade calcium hydroxide serves specialized applications in sugar refining, corn processing, fruit preservation, and other food industry uses. Food processing activity, sugar production levels, and agricultural processing demand create niche consumption segments with distinct quality specifications and pricing patterns.

• Metallurgical Applications and Industrial Uses

Metallurgy operations utilize calcium hydroxide for various metal processing applications, neutralization processes, and slag treatment. Industrial steel production, non-ferrous metal processing, and manufacturing activity influence consumption. Solid consumption in North American metallurgy applications contributed to regional price support.

• Carbon Capture and Decarbonization Initiatives

Emerging applications in carbon capture technologies, particularly calcium looping systems for CO2 absorption, represent growing demand opportunities. Environmental sustainability initiatives, marine vessel emission reduction, and industrial decarbonization efforts create innovative consumption pathways. Recent strategic developments in carbon capture applications highlight evolving market dynamics.

Recent Highlights & Strategic Developments:

Recent strategic moves within the industry further illustrate evolving dynamics:

• In July 2025, Seabound announced plans to launch a containerized calcium looping carbon-capture system for marine vessels, using calcium hydroxide (slaked lime) to absorb up to 95% of CO2 in ship exhaust. The captured CO2 is converted into limestone onboard, offering a pathway to reduce emissions from shipping and representing significant innovation in maritime decarbonization applications.
• In June 2025, Limenet inaugurated an electric-calcination plant in Sicily to produce decarbonized calcium hydroxide, claiming the site removes approximately 800 tons of CO2 annually by coupling renewable energy with innovative calcination processes. This facility marks a practical step forward in low-carbon lime and hydroxide production and may serve as a reference model for scaling sustainable production in Europe.
• In January 2024, Mississippi Lime Company announced a significant investment to install a state-of-the-art, sustainable kiln at its Bonne Terre, Missouri facility, aimed at enhancing calcium hydroxide (hydrated lime) production in an environmentally improved manner, representing commitment to sustainable manufacturing practices and capacity modernization.

Outlook & Strategic Takeaways:

Looking ahead, the calcium hydroxide market is expected to maintain solid growth at 3.57% CAGR through 2034, supported by increasing applications in construction materials, wastewater treatment, and flue gas desulfurization, along with rising usage in the paper, food processing, and chemical sectors across both developed and emerging economies. Regional demand will continue to be shaped by construction activity levels, environmental regulation enforcement, infrastructure investment, and emerging carbon capture applications. The shift toward sustainable production methods and innovative decarbonization technologies represents transformational opportunities for the industry.

To navigate this complex landscape, stakeholders should:

• Track calcium hydroxide prices monthly and regionally to identify inflection points or early signals of shifting supply-demand dynamics, particularly monitoring Northeast Asian construction and environmental application demand, European industrial recovery patterns, and North American infrastructure project activity that influence regional pricing trajectories.
• Benchmark procurement against regional price differentials to optimize sourcing strategies. The USD 0.04/Kg spread between Europe and North America represents opportunities for procurement optimization, though transportation logistics and quality specifications require careful evaluation for alkaline chemical handling.
• Monitor construction sector activity and infrastructure investment levels as the primary consumption driver affecting baseline calcium hydroxide demand. Construction project pipelines, residential building permits, commercial development, and public infrastructure spending ripple directly into construction materials consumption and pricing dynamics.
• Assess environmental regulation enforcement and compliance requirements including wastewater treatment standards, air quality regulations, and emissions control mandates that drive sustained calcium hydroxide demand for environmental applications. Stricter standards and increased enforcement create structural demand growth across regions.
• Evaluate flue gas desulfurization demand from power generation and industrial sectors, particularly in regions with significant coal-fired capacity and air quality improvement initiatives. Power plant operations, industrial emissions control investments, and FGD system installations provide substantial consumption support.
• Track upstream calcium oxide feedstock costs and energy prices for calcination processes, as quicklime availability and production economics directly influence calcium hydroxide manufacturing costs. Limestone supply, kiln fuel costs, and energy market conditions materially affect producer margins and pricing strategies.
• Monitor supply capacity and production disruptions across key manufacturing regions to anticipate tightness or abundance conditions. Northeast Asian supply constraints significantly contributed to November's exceptional price surge. Plant operating rates, maintenance schedules, and production reliability affect regional market balances.
• Explore opportunities in carbon capture and decarbonization applications where calcium hydroxide's CO2 absorption properties enable innovative emission reduction technologies. Marine vessel carbon capture systems, industrial decarbonization projects, and circular economy applications represent emerging high-growth market segments.
• Assess sustainable production initiatives and low-carbon manufacturing methods as environmental considerations increasingly influence supply chain decisions and regulatory frameworks. Electric-calcination plants, renewable energy integration, and decarbonized production processes align with corporate sustainability objectives and may command premium positioning.
• Monitor paper industry activity and chemical sector demand as secondary consumption drivers that influence overall market dynamics. Paper production levels, chemical manufacturing output, and industrial activity variations create regional demand fluctuations.
• Plan logistics and handling infrastructure for alkaline materials, including appropriate storage facilities, transportation equipment, and safety protocols for managing calcium hydroxide's chemical properties. Proper handling and moisture protection requirements affect delivered costs and supply chain efficiency.

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