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Your Professional Fine Chemical Manufacturer!
 

Located in Xiasha Economic Development Park of Hangzhou city (capital of Zhejiang province in the southeast coastal region of China), Hangzhou Dingyan Chem Co.,Ltd is a modern private enterprise; The company was founded in 2013 and has more than ten years of experience in this industry. we are mainly engaged in the development, trade and independent import and export business of hi-tech products such as pharmaceutical materials (APIs), pharmaceutical intermediates, fine chemicals and biochemical reagents, etc.

 

 
 
Why Choose Us

Rich Experience

The company was founded in 2013 and has more than ten years of experience in this industry.

High Quality

Our products are manufactured or executed to very high standards, using the finest materials and manufacturing processes.

Research And Development

Insisting on the development path of "scientific and technological innovation" since our foundation, dingyan-chemical has laid great stresses on the research and development of scientific and technological innovation.

 

Production Market

Dingyan's products are well sold in more than 60 countries and regions in North America, Western Europe, Southeast Asia, Central and South America, and then established long-term and steady relations of cooperation with many pharmaceutical enterprises in Europe, USA, Greece, Germany, South Korea and India, etc.

 

2,5-Dichloro-1,8-naphthyridine 91870-15-4

 

Advantages of Fine Chemical

High Purity: Fine chemicals are purified to remove impurities, ensuring they meet strict quality requirements.

 

Specific Applications: Fine chemicals are created for precise roles, such as active ingredients in medicines or reagents in lab tests.

 

Controlled Production: Fine chemicals are produced in strict compliance with strict regulations and high quality standards, ensuring product consistency and purity. Since fine chemicals are produced in smaller quantities, they are easier to monitor, providing better quality control and minimizing production-related issues.

 

Environmental Benefits: Fine chemicals can contribute to more sustainable chemical processes, such as carbon adsorption for solvent recovery and environmental compliance.

 

Application of Fine Chemical
 

Pharmaceutical industries
The pharmaceutical industry is one of the largest consumers of fine chemicals. They are used to create active pharmaceutical ingredients (APIs) and intermediates, which are essential in drug development and manufacturing. Whether it’s a simple pain reliever or an advanced biologic drug, fine chemicals ensure quality and effectiveness in medications.

 

Nutraceutical industry
Fine chemicals are crucial for producing high-quality ingredients in nutraceuticals, like vitamins, amino acids, and antioxidants, that meet strict purity standards. These ensure that consumers get safe, effective products for daily wellness.Many fine chemicals help improve the bioavailability of nutrients in supplements, meaning the body can absorb and use them more effectively.

 

Cosmetics, Food, and Beverage industries
Beyond pharmaceuticals and electronics, fine chemicals are also used in the cosmetics industry, where high-quality ingredients are necessary for skincare, makeup, and personal care products. In the food and beverage sector, fine chemicals help with food preservation, flavor enhancement, and packaging.

 

Product Specifications

 

Items

Standard

Appearance

Light yellow green powder

Assay

≥98.0%

Nitrate

Complies

Chloride(Cl)

≤0.01%

Sulfate

≤0.05%

Assay

≥98.0%

Fe

≤0.05%

Ammonium salt

≤0.1%

Hydrogen sulfide not precipitation

≤0.8%

 

Manufacturing Processes for Fine Chemicals
 
 
 

Chemical Synthesis

Chemical synthesis uses a process of one or more chemical reactions that change raw materials or other chemicals into a product or multiple products. Chemical synthesis has helped chemists learn the physical and biological properties of many compounds.

 
 

Biotechnology

Biotechnology is the field of using organisms or their life processes to create technologies that make our health and our world better. There are three areas of biotechnology. These are biocatalysis, biosynthesis, and cell culture technology.

 
 

Extraction

Extraction involves isolating and purifying products from animals and plants. Some of these products might be alkaloids, antibacterials, steroids, proteins hormones, and polysaccharides. These are all useful in making pharmaceuticals, foods, and cosmetics.

 
 

Hydrolysis

Hydrolysis is a chemical process that uses water to break a chemical compound bond. It is used in the production of fine chemicals to break down proteins into amino acids using heat as a catalyst.

 

 

 

Storage and transportation

 

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Our Certificates

 

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FAQ

 

Q: Can i get some samples？

A: Yes, we can supply the free sample, but the shipping cost be paid by our customers.

Q: How to start orders or make payments？

A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T, L/C , Paypal , MoneyGram or Escrow(Alibaba).

Q: How to confirm the Product Quality before placing orders？

A: You can get free samples for some products, you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests, we will manufacture the products according to your requests.

Q: What's your MOQ？

A: Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Q: How about delivery leadtime？

A: Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)

Q: Is there a discount？

A: Different quantity has different discount.

Q: How do you treat quality complaint？

A: First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.

Q: What is the difference between heavy and fine chemicals?

A: Drying Process differences between Fine & Heavy Chemicals. Fine chemicals are so sensitive that advanced drying techniques are often needed to preserve their essential qualities. Heavy chemicals, meanwhile, often bypass drying altogether, relying on production methods like distillation or crystallisation.Feb 16, 2024

Q: Why are they referred to as fine chemicals?

A: Fine chemicals are typically single, but often complex pure chemical substances, produced in limited quantities in multipurpose plants by multistep batch chemical or biotechnological processes and are described by specifications to which the chemical producers must strictly adhere.

Q: Are pharmaceuticals fine chemicals?

A: Fine chemicals are only manufactured in small quantities, involving multiple complicated steps, by batch production or biotechnological processes. Yet they are the foundation for many products that people worldwide rely on, from pharmaceuticals and agrochemicals to food additives and pigments.

We're professional fine chemical manufacturers and suppliers in China, specialized in providing high quality customized service. If you're going to wholesale discount pharmaceutical and chemical raw materials, welcome to get free sample from our factory.

12158-74-6, Copper Hydroxy Phospate, 163702-07-6
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