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2,6-Diaminopyridine CAS 141-86-6

Molecular Formula: C5H7N3

Formula Weight: 109.13

ZSpharmac: 2,6-Diaminopyridine Raw Material Supplier

Product Name: 2,6-Diaminopyridine
CAS No: 141-86-6
Purity: 99%

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Basic Info

Product Name:2,6-Diaminopyridine
Other Names:Diaminopyridine
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:Beige Flakes
EINECS No.:205-507-2
Storage:Store Below +30°C.
Provide:2,6-Diaminopyridine MSDS;
2,6-Diaminopyridine COA

What is 2,6-Diaminopyridine?

2,6-Diaminopyridine (2,6-diaminopyridine) is an organic compound with a chemical formula of C5H7N3 and a molecular weight of 109.13. This is a gray powdery chemical that is an aromatic diamine compound.

2,6-Diaminopyridine Property

Melting point 117-122 °C (lit.)
Boiling point 285 °C (lit.)
density 1.7110 (rough estimate)
refractive index 1.5340 (estimate)
Fp 155°C
storage temp. Store below +30°C.
solubility 180g/l
form Flakes or Crystalline Powder
color Beige to dark brown-gray
PH>7 (H2O)
Water Solubility 9.9 g/100 mL (20 ºC)


2,6-Diaminopyridine Uses

Pharmaceutical industry:
Pharmaceutical intermediates: 2,6-diaminopyridine is a key intermediate in the synthesis of a variety of drugs, including drugs to treat pain and discomfort associated with urinary tract infections (such as phenazopyridine), as well as other biologically active compounds such as antimicrobials , antiviral and antitumor drugs.
Bioactive molecule synthesis: It is involved in the synthesis of molecules with specific biological activities, which may have anti-cancer, antibacterial or antiviral properties and is an important component in drug discovery and development.

Dyestuff and Pigment Manufacturing:
Coupling agent: As a coupling component, 2,6-DAP can undergo a coupling reaction with diazonium salts to generate dyes of various colors, which are used in textile dyeing, leather coloring, and paper and plastic coloring.
Hair dye ingredient: In personal care products, it can be used as an ingredient in permanent hair dyes to change hair color by reacting with oxidants to form stable and long-lasting color molecules.

Chemical sensing and analysis reagents:
Molecular recognition: Based on its specific molecular structure, 2,6-DAP and its derivatives can be used as molecular probes or sensors for identifying and detecting specific chemical substances, such as applications in biomolecule interaction research or environmental monitoring. .

Material science:
Polymers and composite materials: It can be used as a functional monomer to participate in the synthesis of polymer materials to produce polymers and composite materials with special properties, such as for electronic devices, membrane materials or high-performance fibers.

Research and development:
Laboratory reagent: As a basic organic chemical reagent, 2,6-DAP is used in various chemical synthesis experiments in the laboratory, including exploration of organic synthesis pathways, catalyst preparation, or theoretical research as a model compound.

Prominent Applications of 2,6-Diaminopyridine in Cosmetics

Color enhancer: 2,6-diaminopyridine is used as an important intermediate or coupling agent in permanent oxidative color agents. When mixed with hydrogen peroxide (developer) and applied to hair, it works with other dye molecules to create richer, longer-lasting color. Especially for dark brown to black shades, it helps enhance and deepen the color effect, giving hair a fuller and more natural look.

Color Adjustment: Due to its molecular structure, 2,6-diaminopyridine can affect the hue and saturation of the final hair color. By adjusting the ratio of this ingredient in a formula, cosmetics manufacturers can fine-tune hair color products to meet different consumer needs for specific hair colors, such as enhancing the expression of warm or cool undertones.

Covering gray hair: This ingredient is particularly useful in products that require good covering power to cover gray hair due to its good coloring ability. It effectively penetrates into the cortex of the hair, ensuring that even stubborn gray hair is evenly colored, achieving a natural and long-lasting coverage.

Improved color persistence: In addition to its direct coloring effect, 2,6-diaminopyridine can also improve color persistence after dyeing hair by forming more stable pigment complexes. This means dyed hair color lasts longer and fades less.

2,6-Diaminopyridine Advantages

  1. Reactivity and selectivity: The two amino (-NH2) groups in the 2,6-diaminopyridine molecule make it a highly reactive intermediate. This makes it very useful in synthetic chemistry and can participate in a variety of chemical reactions, such as coupling reactions, condensation reactions, etc., and often shows good selectivity, helping to synthesize target products.
  2. Dye and Pigment Synthesis: 2,6-diaminopyridine is a key building block in the preparation of dyes and pigments. Its bis-amino structure can be coupled with different diazonium salts to generate a series of azo dyes with various colors and good stability. These dyes are widely used in textiles, leather, paper and cosmetics.
  3. Pharmaceutical intermediates: In the pharmaceutical industry, 2,6-diaminopyridine is often used as an important intermediate in the synthesis of certain drugs. Its unique chemical properties enable it to participate in the construction of a variety of drug molecules, especially in the synthesis of biologically active pyridine derivatives, showing its unique value.
  4. Stability: Despite containing easily reactive amino groups, 2,6-diaminopyridine is relatively stable under appropriate storage conditions, making it easy to transport and store, which is an important advantage for the chemical industry.
  5. Versatility: In addition to the above applications, 2,6-diaminopyridine also plays a role in the synthesis of other fine chemicals, including the preparation of certain catalysts, optoelectronic materials and sensors, showing its wide application in multiple scientific fields potential.


Prabhu, A.A.M., Siva, S., Sankaranarayanan, R.K. et al. Intramolecular Proton Transfer Effects on 2,6-diaminopyridine. J Fluoresc 20, 43–54 (2010). https://doi.org/10.1007/s10895-009-0520-9

As a company specializing in the production and supply of 2,6-Diaminopyridine raw materials, we are committed to providing customers with high-quality products and preferential prices. We have rich experience and technology to ensure product quality and stable supply. No matter where you are, we can provide you with the 2,6-Diaminopyridine raw materials you need to support your production and research and development.

We always adhere to the principle of honest operation, strictly control product quality, and serve every customer with a customer-first attitude. Over the years, we have established good cooperative relationships with customers at home and abroad and won their trust and praise.

If you have needs or are interested in our products, please contact our service staff directly, we will wholeheartedly provide you with the best quality services and products. Looking forward to cooperating with you and developing together

Company Profile and Corporate Culture

Company Profile:

ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .

The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .

The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.

Corporate Culture:

Help China Chemicals to benefit the happiness of human life
Become the most trusted chemical supplier in the world
Striver – oriented, enrich employees, customer first, deep service, seek development
Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Cosmetic raw materials
  • Products/Service:Cosmetic raw materials (flavors and fragrances,antioxidant products, moisturizing and hydrating, whitening agents, cosmetic additives)
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.


After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.



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.

What’s your MOQ?

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

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

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