The Global Methylchloroisothiazolinone Market was valued at USD 212 Million in 2024 and is projected to reach USD 298 Million by 2030, growing at a Compound Annual Growth Rate (CAGR) of 5.8% during the forecast period (2024–2030). This robust growth is primarily driven by escalating demand for effective preservatives in personal care products, paints & coatings, and industrial applications, alongside stringent regulations mandating microbial control in water treatment and manufacturing processes.

As industries worldwide prioritize product longevity and consumer safety, the demand for high-performance biocides like Methylchloroisothiazolinone (MCI) continues to surge. In this blog, we profile the Top 10 Companies in the Methylchloroisothiazolinone Industry—a blend of global chemical giants and specialized manufacturers shaping the supply and innovation landscape for this critical preservative.

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🔟 1. Ashland Global Holdings Inc.

Headquarters: Wilmington, Delaware, USA
Key Offering: High-purity Methylchloroisothiazolinone, Blended Isothiazolinone formulations

Ashland is a premier global specialty chemicals company with a strong portfolio of preservatives and biocides. Its MCI products are renowned for their efficacy in preventing microbial growth in a wide array of applications, from cosmetics to industrial fluids. Ashland invests significantly in R&D to enhance product safety and environmental profiles.

Innovation and Sustainability Initiatives:

• Development of low-VOC and eco-friendly preservative systems

• Extensive toxicological and environmental testing for regulatory compliance

• Commitment to sustainable sourcing and manufacturing practices

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9️⃣ 2. Lanxess AG

Headquarters: Cologne, Germany
Key Offering: Preventol and Bioban branded MCI products

Lanxess is a leading specialty chemicals company with a formidable presence in the biocides market. Through its acquisition of Emerald Kalama Chemical, Lanxess significantly strengthened its preservatives portfolio, offering advanced MCI solutions for coatings, adhesives, and personal care.

Innovation and Sustainability Initiatives:

• Expansion of production capacity for isothiazolinone-based biocides

• Focus on developing products with improved human and environmental safety

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8️⃣ 3. Dow Chemical Company

Headquarters: Midland, Michigan, USA
Key Offering: Dowicil and other MCI-based preservatives

Dow is a titan in the chemical industry, offering a comprehensive range of materials science solutions. Its biocides division provides effective MCI products used as preservatives in water-based systems, including paints, latex emulsions, and metalworking fluids.

Innovation and Sustainability Initiatives:

• Investment in green chemistry for sustainable preservative solutions

• Global supply chain capabilities ensuring consistent product availability

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7️⃣ 4. BASF SE

Headquarters: Ludwigshafen, Germany
Key Offering: Preventol and Baxenden range including MCI

BASF is one of the world’s largest chemical producers, with a diverse portfolio that includes high-performance biocides. The company offers Methylchloroisothiazolinone as part of its broader isothiazolinone family, catering to the demanding preservation needs of the construction and personal care industries.

Innovation and Sustainability Initiatives:

• Integration of digital tools for optimized biocide performance

• Strong emphasis on product stewardship and regulatory guidance

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6️⃣ 5. Clariant AG

Headquarters: Muttenz, Switzerland
Key Offering: MCI-based preservatives for home care and industrial applications

Clariant is a focused, sustainable, and innovative specialty chemical company. Its Industrial & Consumer Specialties business unit offers preservatives that protect products against microbial degradation, with MCI playing a key role in its portfolio for applications like detergents and industrial lubricants.

Innovation and Sustainability Initiatives:

• Development of bio-based and biodegradable preservative alternatives

• EcoTain® label for products with superior sustainability profiles

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5️⃣ 6. Thor Group (Aviation)

Headquarters: Manchester, United Kingdom
Key Offering: Acticide branded MCI and MIT blends

Thor Group, particularly through its subsidiary Thor Specialties, is a significant global supplier of specialty chemicals, including biocides. The company’s Acticide range features MCI-containing formulations that are widely used in paints, coatings, and polishes to ensure product integrity.

Innovation and Sustainability Initiatives:

• Custom formulation services to meet specific customer requirements

• Strategic focus on high-growth emerging markets

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4️⃣ 7. Troy Corporation

Headquarters: Florham Park, New Jersey, USA
Key Offering: Polyphase and Troysan branded MCI preservatives

Troy Corporation is a globally recognized leader in the development and manufacture of performance-preserving additives for coatings, graphic arts, and other industries. Its expertise in MCI-based preservatives helps prevent spoilage in water-based products.

Innovation and Sustainability Initiatives:

• Pioneering work in microencapsulation technology for controlled release

• Commitment to reducing the environmental impact of preservative technologies

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3️⃣ 8. Sharon laboratories

Headquarters: Hamburg, Germany
Key Offering: Broad-spectrum preservatives including MCI formulations

Sharon laboratories is a dedicated manufacturer of preservatives and antimicrobial solutions. The company specializes in providing effective and safe preservation for the cosmetic, pharmaceutical, and home care industries, with MCI being a key component in its product arsenal.

Innovation and Sustainability Initiatives:

• Focus on developing Mild Preservation Technology (MPT) for sensitive applications

• Global regulatory support and certification services for customers

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2️⃣ 9. Lonza Group AG

Headquarters: Basel, Switzerland
Key Offering: MCI under the Glycacil and Proxel brands

Lonza is a leading supplier of microbial control solutions, offering a wide range of biocides for industrial and consumer applications. Its MCI products are trusted for their quality and reliability in protecting everything from household cleaners to industrial process waters.

Innovation and Sustainability Initiatives:

• Continuous innovation in preservation chemistry to meet evolving regulations

• Strong global manufacturing and technical support network

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1️⃣ 10. Guangzhou Kaoking Chemical Co., Ltd.

Headquarters: Guangzhou, China
Key Offering: Cost-effective MCI for regional and global markets

Guangzhou Kaoking Chemical is a prominent Chinese manufacturer of fine chemicals and preservatives. The company has established itself as a key supplier of Methylchloroisothiazolinone, serving both the domestic Asian market and international customers with competitive pricing and reliable quality.

Innovation and Sustainability Initiatives:

• Expansion of production capabilities to meet growing global demand

• Investment in quality control systems to meet international standards

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🌍 Outlook: The Future of Methylchloroisothiazolinone is Driven by Safety and Sustainability

The Methylchloroisothiazolinone market is navigating a complex landscape of growing demand and increasing regulatory scrutiny. While MCI remains a highly effective and widely used preservative, the industry is actively investing in safer formulations, improved manufacturing processes, and alternative technologies to address health and environmental concerns.

📈 Key Trends Shaping the Market:

• Stringent global regulations limiting MCI concentrations in leave-on personal care products

• Rising demand for multifunctional preservative systems that reduce overall chemical load

• Growing preference for sustainable and bio-based preservative alternatives

• Increased R&D into MCI encapsulation and controlled-release technologies

Get Full Report Here:
Methylchloroisothiazolinone Market – View in Detailed Research Report

The companies listed above are not only supplying a critical industrial chemical—they are at the forefront of developing safer, more sustainable preservation solutions for a wide range of global industries.