Zhishang Chemical

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Molecular Formula: C18H14N3NaO3S

Formula Weight: 375.38

ZSpharmac: METANIL YELLOW Supplement

CAS No: 587-98-4
Purity: 99%

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Basic Info

Other Names:Acid Yellow 36
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:Orange Powder
EINECS No.:209-608-2
Storage:Room Temp


METANIL YELLOW is just one of the primary ranges of gold dyes. METANIL YELLOW is mainly utilized for coloring agent, acid-base sign, tinting soap as well as coloring silk, wool, paper, leather, and so on. However, in the manufacturing process of METANIL YELLOW, the outcome and top quality of the items in the existing procedure are low, causing a rise in the manufacturing of by-products in the synthesis procedure. These spin-offs will certainly lower the quality of the product as well as trigger air pollution to the setting.


Melting point >250°C
storage temp. room temp
solubility 25g/l
Colour Index 13065
form Powder
color Orange
PH10 (10g/l, H2O, 20℃)
PH RangeRed (1.2) to yellow (2.3)
Water Solubility Soluble in water (25g/L).



METANIL YELLOW can be made use of for wool dyeing and straight printing of woollen and silk fabrics, as well as can likewise be dyed golden yellow with acid intense yellow 2G and also acid red G. It is mainly utilized for soap coloring, but likewise for the coloring of paper, leather, paint, medication, cosmetics, and for the manufacture of lake pigments. Additionally used as an acid-base indication (pH=1-3). Mainly utilized for the coloring of soap and also the dyeing of woollen, silk, leather, paper, etc.

Applications of METANIL YELLOW

METANIL YELLOW, commonly known as soap yellow, is used for the coloring of soap and the dyeing of silk, wool, paper, leather, etc. For example, for the construction of a halophilic thermophilic microbial flora that degrades dyes, the activated sludge from the printing and dyeing wastewater treatment plant is used as the inoculated sludge, and it can be continuously subcultured in the inorganic salt medium for 6 to 18 generations. The halophilic thermophilic microbial flora using METANIL YELLOW as carbon source was obtained. The obtained halophilic thermophilic microbial flora with METANIL YELLOW as carbon source accounted for 85-94% of Bacillus, 5-10% of unclassified_f_Bacillaceae, and 0.1-2% of Piscibacillus. The halophilic thermophilic microbial flora has strong tolerance to salt and temperature, and has extensive adaptability to printing and dyeing wastewater. The bacterial group has fast growth rate, stable activity, strong adaptability and low cost, which can provide theoretical basis and bacterial resources for the actual treatment of printing and dyeing wastewater in multi-extreme environments.

Through the study of the surface-enhanced Raman spectroscopy of METANIL YELLOW on silver mirror, its adsorption mode on silver mirror and the analysis of SERS spectra under different concentration conditions, the following conclusions are drawn: (1) METANIL YELLOW in silver (2) When the concentration is less than 10-10mol/L, the signal of some Raman peaks is extremely weak, and complete molecular information cannot be obtained, so the detection limit of this dye is 10-10. mol/IJ. (3) METANIL YELLOW relies on the van der Waals force and electrostatic attraction to vertically adsorb on the surface of the silver mirror by the coordination of N atoms with lone pair electrons and silver atoms.

Preparation of METANIL YELLOW

A production method of METANIL YELLOW, the specific production steps are as follows:

(1) Diazonation reaction: add quantitative water to the diazotization reaction kettle, then add quantitative m-aminobenzenesulfonic acid, stir for 1 hour to make it into a uniform suspension, and quantitatively add hydrochloric acid to the reaction kettle through a metering tank, add An appropriate amount of ice was cooled to 5°C, and the solid sodium nitrite and water were added to the dissolving tank for stirring and dissolving. The dissolved sodium nitrite solution was added to the reaction kettle and stirred for 1 hour.

(2) Coupling reaction: add the diazo liquid prepared above into the coupling tank, add 20°C diphenylamine emulsion, act to pH=1.5, adjust pH=4.3 with soda ash solution, and keep at 13°C until the diazonium compound disappears, After the diazonium disappears, stir for 30 minutes to generate dye METANIL YELLOW, adjust pH=8.2 with soda ash solution, add refined salt to salt out by volume 23%, and stir for 1 hour until the ring is clear and ready for use.

(3) Drum drying: The prepared dye slurry is transported to the liquid tank of the drum dryer through the pipeline, and the drum is dried with indirect steam. The drying exhaust gas is introduced into the spray absorption tower through the fan for purification treatment, and the purified exhaust gas passes through a 15-meter row. gas cylinder discharge;

(4) Pulverization: The dried dyestuff is put into the pulverizer for pulverization, and the dust generated during the pulverization process is collected by cloth bags, and the exhaust gas is discharged through a 15-meter exhaust pipe;

(5) Mixing and packaging: put the crushed dye into the mixing tank, add Yuanming powder and dust-proof oil according to each chromaticity index to mix, and the obtained finished product is packaged in a bag through the bottom discharge port. In order to control the fugitive emissions generated in the packaging process, an air induction device is installed at the discharge port of the mixing tank to introduce the dust generated during the discharging and packaging process into the bag filter.

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: 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.