S-205 CAS 70516-41-5

Molecular Formula:C34H34N2O3

Formula Weight:518.65

Purity: 99%

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Product Name: S-205
CAS No:70516-41-5

Basic Info

Product Name:S-205
Other Names:2′-anilino-6′-[ethyl(3-methylbutyl)amino]-3′-methylspiro[isobenzofuran-1(3H),9′-[9H]xanthene]-3-one;3-N-Isoamyl-N-ethylamino-6-methyl-7-anilinofluoran
Place of Origin:Shandong, China
Brand Name:Zhishang Chemical
Appearance:Crystalline Solid
EINECS No.:274-641-1
Storage:Cool Dry Place
Provide:Amrinone MSDS;
Amrinone COA


Product Categories:

Aromatics; Dye intermediates; Thermal pressure sensitive and photosensitive materials-Thermal (pressure) sensitive dyes; Chemical raw materials


S-205 is a kind of excellent coupler. The fluoran compound has two different crystal forms, a kind of high melting point crystal. Its melting point range is between 164~168℃  ; a low melting point crystal whose melting point range is between 145~156℃. In these two different crystal forms, as a coupler in thermal or pressure-sensitive recording materials, high melting point crystalline compounds have the advantages of fast color development and resistance to fading.

Chemical Properties:

Crystalline Solid

Melting point 166-168℃
Boiling point 692.2±55.0 °C(Predicted)
density 1.25±0.1 g/cm3(Predicted)
storage temp. Keep in dark place,Inert atmosphere,2-8°C
EPA Substance Registry SystemSpiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 6′-[ethyl(3-methylbutyl)amino]-3′-methyl-2′-(phenylamino)- (70516-41-5)


  1. S-205 is a kind of black fluoran heat pressure sensitive dye, and black fluoran heat pressure sensitive dye is xanthene type It is a compound of the parent   structure. It is usually colorless or light-colored crystals. When it comes in contact with a color developer (acid clay, bisphenol A, POB, etc.), it develops color as the internal lactone ring of the molecule cracks.
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.

Get S-205 Quotation