4-Nitro-o-phenylenediamine CAS 99-56-9

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Basic Info

Product Name:4-Nitro-o-phenylenediamine
Other Names:4-no;4-nop;4-nopd;4-n-o-pda;nci-c03941;p-nitro-o-phenylenediamine;o-Phenylenediamine, 4-nitro-;WLN: ZR BZ DNW
Place of Origin:Shandong, China
Brand Name:Zhishang Chemical
Type:Others chemical reagents;Anilines, Aromatic Amines and Nitro Compounds
Orange – red powder, Orange – red powder
EINECS No.:202-766-3
Storage:Cool Dry Place
Provide:4-Nitro-o-phenylenediamine msds;4-Nitro-o-phenylenediamine COA

Chemical Properties:

  1. 4-Nitro-o-phenylenediamine Chemical properties: dark red needle-like crystals. Melting point is 201℃, soluble in ethanol, acetone and hydrochloric acid solution, but hardly soluble in water.
  2. 4-Nitro-o-phenylenediamine production method: Heat a mixture of 23.8g of 2,4-dinitroaniline, 240ml of 95% ethanol and 120ml of concentrated ammonia to 45°C, and pass hydrogen sulfide gas into it under stirring, and maintain the reaction at 45-55°C. . After the reaction was completed in the Chemicalbook, cooled, 4-nitro o-phenylenediamine was precipitated. The crude product obtained by filtration is dissolved in hydrochloric acid, added with activated carbon for decolorization, filtered while hot, and the filtrate is neutralized with concentrated ammonia, filtered, washed with water, and dried to obtain the finished product with a yield of 52-58%.


  1. 4-Nitro-o-phenylenediamine is used to synthesize α-keto acid; reagent for detecting selenium.
  2. 4-Nitro-o-phenylenediamine is mainly used to synthesize drugs and synthetic pigments, dyes, etc.
  3. 4-Nitro-o-phenylenediamine is used to synthesize α-keto acid; used as a reagent for detecting selenium.

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: Additive , Chemical Auxiliary & Catalyst , Organic Chemicals
  • Products/Service: Organic Intermediate,Inorganic Chemistry, APIs, Dyestuffs And Pigments, Fragrance And Spices, Food 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.