Thiosalicylic acid CAS# 147-93-3

Thiosalicylic acid, Promotion Season Now in Store and Free Sample for Testing with Factory Price
  • Appearance: White or light yellow powder.
  • Assay: 99. 0%min.
  • Packaging: 25kg/fiber drum.
  • Sample: Available.

Quality Control of Thiosalicylic acid

Chemical Structure
Packing of Thiosalicylic acid

Description of Thiosalicylic acid

Thiosalicylic acid is an organosulfur compound containing carboxyl and sulfhydryl functional groups. Its molecular formula is C6H4(SH)(CO2H). it is a yellow solid that is slightly soluble in water, ethanol and diethyl ether, and alkanes, but more soluble in DMSO.

Basic Info of Thiosalicylic acid

Basic Info

Chemical Name

this salicylic acid


Benzoic acid, 2-mercapto-;Thisosalicyilic acid;Thiosalicylic acid;2-Mercaptobenzoic Acid;



Molecular Formula


Molecular Weight







Safety Info



Safety Statements


HS Code


WGK Germany


Risk Statements

R20/21/22; R36/37/38

Hazard Codes




Caution Statement

P261; P305 + P351 + P338

Signal Word


Hazard Declaration

H315; H319; H335



Appearance & Physical State

pale yellow powder


1.318 g/cm3

Boiling Point

288.6ºC at 760 mmHg

Melting Point


Flash Point


Water Solubility

soluble in hot water


Stable at room temperature in closed containers under normal storage and handling conditions.

Storage Condition


Vapor Pressure

0.00979mmHg at 25°C


Numbering system

MDL number


EINECS number


RTECS number


BRN number



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What is Thiosalicylic acid?

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Thiosalicylic acid which has developed particularly rapidly in recent years. Do you know about Thiosalicylic acid?


The official answer: Thiosalicylic acid, o-mercaptobenzoic acid, white trigonal crystals, or white solidified form. Soluble in ethanol and glacial acetic acid, slightly soluble in water. Used in the production of sulfur indigo dyes, also used as a reagent for the analysis of iron. It is used in the electroplating industry for the anticorrosive treatment of ferrous metals, and as a surface treatment agent for metals, and as a coloring agent in the ceramic industry.

What’s the application of Thiosalicylic acid?

Yellow leafy (glacial acetic acid) or needle-like (ethanol aqueous solution) crystals. Melting point 165.5℃, 158℃ Softening, can sublimate, easily soluble in acetic acid, slightly soluble in hot water, get dithiosalicylic acid when meet air. Intermediate of thimerosal, also intermediate of thioglycolic dye, reagent for iron determination. It is mainly used in pesticide, dyestuff, rubber industry, also used in pharmaceutical products such as methyl salicylate, or used in the electroplating industry for anti-corrosion treatment of ferrous metal, also used as metal surface treatment agent, used as a coloring agent in the ceramic industry. Determination of iron reagent, liquid chromatography determination of ethyl mercury thiosalicylate and ethyl mercury. Sulfur indigo dye preparation. Used as organic synthesis, pharmaceutical, and dye intermediates. Produced by reacting halogenated benzoic acid with thiosalicylate in the presence of a copper catalyst.


Sincere to the customer and in good faith of quality is our forever followed motto. It’s the basement to be a human and do business. We take all responsibility for our products and service sincerely. We are a company integrating R&D, production, and sales. The design, research, and development of pharmaceutical intermediates including more than 330 kinds of pharmaceutical intermediates such as Anti-infectives, Cardiovascular and Cerebrovascular Systems, Digestive System, Santi-tumor, Nervous System, Geriatric Drugs, and Gynecological Drugs. At the same time, we have more than 4,000 factories in strategic cooperation with nearly 50,000 chemical products, so we can provide you with a one-stop purchasing service, which greatly saves customers’ procurement costs and time.

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United Kingdom Giles
United Kingdom Giles
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Peter has been my partner for many years, we met at the Shanghai CPHI Fair in 2014, for the first time I didn't have much interest in Peter's products because our company had a stable supplier. Although we didn't work together, Peter would often send me important news and interesting trend information about the industry, so we became good friends, even though I didn't place any orders with him during this time, even if it was a sample order. In September 2016, our original supplier was unable to provide us with the quality and delivery guarantees we needed, so I first thought of Peter and his company. Until now, we have maintained a very good personal friendship in addition to a steady business relationship.
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India Shikhar
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In all my years of sourcing from China, I first time to found that working with Sincere Chemical was so good, they helped me with all the production and delivery as well as a lot of technical expertise, which saved me a lot of time. When I first approached Peter for a quotation for Optical Brightener, he made me a detailed quotation with not only prices but also foreign trade details, company profile, company strengths, R&D capabilities, production capacity, packaging methods, raw material control, environmental protection, and much more. This information was a very important reference for me in making purchasing decisions. Sincere Chemical is a trustworthy supplier and I believe our business will grow from strength to strength!
Korea Kim
Korea Kim
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Hi, I'm Kim, I'm Peter's partner and although I don't like him very much (because he never gives me more money for my prices, hahaha) I'm still willing to write him customer feedback. As an international buyer, I have to deal with a lot of things every day and my inbox is often full of development letters. It's a lot of junk and meaningless pleasantries, which I don't like that much, but Peter's emails always give me a better understanding of the product and the industry. I am also very pleased with his work ethic, and I am very happy with his work every time I work with him, not only in providing quotations but also in facilitating all the details of my work so that I can concentrate more on other things, so he is the best supplier for me. Although his prices are not the lowest among all suppliers, his products give me the greatest peace of mind.
USA Franklin
USA Franklin
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Canada Kate
Canada Kate
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I just got the product. The quality is awesome. I’m very happy. Hope to place soon a new order in your company. Also wish for our future business.
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Sincere Chemical is a reliable and professional company. Not only on exporting but also their professional team service. Their team gave us so many suggestions for our new project. We are really satisfied with their awesome service and best product quality. Sincere-Chem’s vendor code is 51465768 in our cooperated vendor list system.
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Brazil Aline
Brazil Aline
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Mexico Gonzalo
Mexico Gonzalo
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Great service and very supportive. This is my first order and I feel fortunate to be with Peter and his company. Product received was the right good quality product, so my review is more related with the quality, service and shipment. Thank you for sending. next time I will order again. Good supplier...