Zhishang Chemical

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ACID RED 88 CAS 1658-56-6

Molecular Formula: C20H13N2NaO4S

Formula Weight: 400.38

ZSpharmac: ACID RED 88 Supplier

Product Name: ACID RED 88
CAS No: 1658-56-6
Purity: 99%

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Basic Info

Product Name:ACID RED 88
Other Names:Acid Red 88, Pure
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:Red Powder to Crystal
EINECS No.:216-760-3
Provide:ACID RED 88 MSDS;

What is ACID RED 88?

Acid red 88 is an azo-type acid dye. The azo-type acid color using ethyl naphthol as a coupling element has lots of aggravations in the process of use as a result of the unacceptable solubility of the target product. Public details reveals: 1.4 Coupling of acid diazonium salt with ethyl naphthol remedy, warming up, salting out, formation, and splitting up to get the target item Acid Red 88. Here, the ethyl naphthol solution is a solution with high temperature and high pH worth. Throughout the combining process, it will certainly not just destroy part of the diazo element, however also develop an amorphous combining product, which is not easy to separate the product. Primarily, the material is separated by heating as well as salting out., when the temperature climbs, the residual raw material in the product will also flocculate as well as oxidize as well as wear away, which will ultimately influence the solubility of the target product. As a result, it is essential to give a new technological remedy.

ACID RED 88 Property

Melting point 280 °C
density 1.508[at 20℃]
Colour Index 15620
form powder to crystal
color Yellow to Amber to Dark red
Water Solubility 1.5g/L at 20℃


ACID RED 88 Uses

Acid Red 88 is an azo-type acid color, which can be made use of for dyeing wool, silk, and nylon, in addition to direct printing of silk as well as woollen materials, and likewise for dyeing wool/nylon blended textiles. The dyeing fastness is poor. It can likewise be used in the coloring of natural leather, paper, soap, wood items, cosmetics, as well as medicine.

Preparation Method of ACID RED 88

Add 120g of water and 14.7g of 1.4 acid to a 250ml three-necked reaction flask, stir and dissolve completely at 25~30°C, then slowly add 17g of hydrochloric acid with a mass concentration of 31%, after cooling down to 15°C, slowly add 4.5g of sodium nitrite dropwise The prepared aqueous solution was kept warm for 1 hour after the addition, and set aside. Add 7g of industrial alcohol to a 500ml three-necked reaction flask, add 3.5g of liquid caustic soda with a mass concentration of 32% under stirring with 8.9g of ethyl naphthol, heat up to 30~35°C to dissolve, then cool down to 5~10°C for later use. Slowly add the diazonium salt into the ethyl naphthol solution, stir for 10 minutes after the addition, adjust the pH=7.5~8.0, react under this condition for 3 hours, filter with suction, the wet product is about 76g, and the dry product of Acid Red 88 is about 25g , 42.5g, the solubility is 15g/L (90°C), and the solubility of sodium hydroxide additive with a weight ratio of 7% of the original powder is 30g/L (90°C).

About Products:
If you need ACID RED 88 this cosmetic raw material, please contact our service personnel directly, we will provide you with high-quality products at the best price.
As an experienced ACID RED 88 manufacturer and supplier, ZSpharmac will provide ACID RED 88 raw materials to customers all over the world for a long time.
Over the years, the company has been adhering to the spirit of “integrity management, strict quality control, customer first”, and has won unanimous praise from domestic and foreign customers.

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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