Xylenol Orange sodium salt CAS 63721-83-5

CBNumber: CB0750952

Molecular Formula: C31H31N2NaO13S

Formula Weight: 694.64

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Product Name: Xylenol Orange sodium salt              CAS Number: 63721-83-5               Purity: 99%

Basic Info

Product Name:Xylenol Orange sodium salt
Other Names:Two cresol orange indicator
Place of Origin:Shandong, China
Brand Name:Zhishang Chemical
Type:Organic Chemistry
Appearance:Reddish brown shiny crystalline powder
EINECS No.:216-553-8
Storage:Cool Dry Place
Provide:Xylenol Orange sodium salt MSDS;
Xylenol Orange sodium salt COA


Product Categories:

aromatic hydrocarbon; Pigments; Acid base indicator; Chemical raw materials; Biochemical reagents – pigments; Chemical Reagents; Biological buffer; Organic Chemistry

Chemical Properties:

Reddish brown shiny crystalline powder

  1. Xylenol orange sodium salt is a triphenylmethane color developer. The scientific name is “3,3 ‘- bis (n, n-dicarboxymethyl aminomethyl) – o-cresol sulfonphthalein”. The molecular formula is c31h32n2o13s. Molecular weight 672.66. Reddish brown shiny crystalline powder. Deliquescent easily. Its sodium salt is easily soluble in water, but insoluble in alcohol and ether. Due to the structure of o-methylphenolphthalein, the pH value of the solution has a great influence on its color change. When pH > 6.3, the solution shows red, and when pH < 6.3, it shows yellow.
  2. Xylenol orange sodium salt and most metal ions can form red purple complexes. Therefore, when used as a metal indicator for Complexometric titration, it is suitable for acidic solutions with pH < 6. It is used to determine metal ions such as bismuth, thorium, scandium, lead, zinc, lanthanum, cadmium and mercury. The reagent is often prepared into 0.5% aqueous solution, which is stable and can be maintained for 2 ~ 3C chemicalbook weeks. In addition, it can also be used as a chromogenic agent for colorimetric analysis. For example, in hydrochloric acid medium, it forms orange complex with niobium, with maximum absorption wavelength λ Max is about 520 ~ 530 nm, and the maximum absorption wavelength of the reagent itself λ Max is about 434 ~ 460 nm, which is used for the determination of Trace Niobium in ore samples and steel.
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.

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