Global Manufacturer of Naphthalene & Bisphenol Intermediates

Wastonchem is an experienced custom manufacturer and global distributor of high-purity functional monomer intermediates, serving industries from thermal paper and photoresist to pharmaceuticals and water treatment.

Explore Products

10,000+ Tons

Annual Production Capacity

28+ Products

Electronic Chemical Intermediates

8+ Years

Industry Experience

GC, HPLC, MS

Advanced Quality Control

About Wastonchem

Changzhou Waston Chemical Technology Co., Ltd. is a leading manufacturer and global distributor of naphthalene intermediates, bisphenol intermediates, and other functional monomer intermediates based in Jiangsu, China.

We operate an automated production facility with an annual capacity of 8,000 MT of 1-Naphthol and 3,000 MT of Bisphenol S. Our expertise extends to the development and scale-up of electronic chemicals, with over 28 intermediates successfully transitioned from lab-scale to multi-kilogram and ton-scale production.

Committed to innovation, sustainability, and quality, Wastonchem delivers tailored chemical solutions to clients worldwide across diverse high-tech and industrial sectors.

Our Product Categories

We specialize in high-purity intermediates for advanced applications. Explore our core product lines developed with precision and consistency.

Thermal Paper Chemicals

High-performance leuco dyes and developers for thermal paper applications, ensuring clarity, stability, and long shelf life.

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Naphthalene Series Intermediates

Including 1-Naphthol (8,000 MT/year), 2-Naphthol, and derivatives used in dyes, agrochemicals, and pharmaceuticals.

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Photoresist Chemicals

High-purity intermediates for semiconductor photoresists, including electronic-grade monomers and sensitizers.

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Pharmaceutical Intermediates

Custom synthesis from grams to multi-ton scale, supporting drug development with high-purity, well-characterized compounds.

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Functional Monomers

Specialty monomers for polymers, resins, and advanced materials with tailored reactivity and performance.

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Water Treatment Chemicals

Efficient and eco-friendly additives for industrial water purification, scale inhibition, and corrosion control.

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Our R&D & Production Capabilities

R&D Team

10+ researchers, including 3 with Master’s degrees, experienced in organic synthesis and process optimization.

Reaction Expertise

Nitrification, Grignard, Suzuki coupling, Friedel-Crafts, oxidation, and reduction reactions.

Purification

Large-scale purification of high-purity electronic chemicals with strict environmental control.

Quality Control

In-house GC, GC-MS, HPLC, LC-MS; outsourced NMR, ICP-MS, DSC for full characterization.

Why Choose Wastonchem?

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End-to-End Solutions

From lab-scale development to mass production, we provide full technical support and scalable manufacturing.

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High-Purity Standards

Rigorous QC protocols ensure consistent product quality and compliance with industry specifications.

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Custom Manufacturing

Tailored synthesis for pharmaceutical and specialty chemical clients, from grams to multi-ton quantities.

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Global Distribution

Reliable export services with documentation, regulatory support, and on-time delivery worldwide.

Frequently Asked Questions

What are your main products?

Our core products include 1-Naphthol, Bisphenol S, thermal paper chemicals, photoresist intermediates, pharmaceutical building blocks, functional monomers, and water treatment additives.

Can you do custom synthesis?

Yes. Our R&D team specializes in custom synthesis for pharmaceutical and specialty chemical clients, from lab-scale to multi-ton production.

What is your production capacity?

We have an annual capacity of 8,000 MT for 1-Naphthol and 3,000 MT for Bisphenol S, with over 10,000 tons total output for basic chemicals.

Do you provide quality certificates?

Yes, all products are supplied with Certificates of Analysis (CoA). We use GC, HPLC, GC-MS, and LC-MS for in-house testing.

Where is your facility located?

Our production and warehouse facility is located at No.1 Chuangye Middle Road, Chunjiang Town, Xinbei District, Changzhou City, Jiangsu, China.

Let’s Work Together

We respond to all inquiries within 8 hours. Start your next chemical project with Wastonchem.

Contact Information

Phone: +86-13861049519

Export/Import: +86-18112881323

Email: [email protected]

Address: No.1 Chuangye Middle Road, Chunjiang Town, Xinbei District, Changzhou City, Jiangsu, China

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