Diantimony trioxide CAS# 1309-64-4

Diantimony trioxide, Promotion Season Now in Store and Free Sample for Testing with Factory Price
  • Appearance: White powder
  • Assay: 99. 0%min
  • Packaging: 25kg/plastic woven bag
  • Sample: Available

Quality Control of Diantimony trioxide

Chemical Structure
Diantimony trioxide CAS# 1309-64-4
Packing of Diantimony trioxide

Description of Diantimony trioxide

Antimony(III) oxide is the inorganic compound with the formula Sb2O3. It is the most important commercial compound of antimony. It is found in nature as the minerals valentinite and senarmontite. Like most polymeric oxides, Sb2O3 dissolves in aqueous solutions with hydrolysis.

Basic Info of Diantimony trioxide

Basic Info

Chemical Name

Diantimony trioxide





Molecular Formula


Molecular Weight






Safety Info



Hazard Class


Safety Statements


HS Code


Packing Group


WGK Germany



UN 9201

Risk Statements


Hazard Codes


Hazard Declaration


Signal Word




Caution Statement




Appearance & Physical State

White Powder



Boiling Point


Melting Point

656ºC (subl.)

Flash Point

1550°C subl.

Water Solubility

Slightly soluble.




Numbering system

PubChem number


RTECS number


EINECS number


MDL number



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What is Diantimony trioxide?

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 Diantimony trioxide which has developed particularly rapidly in recent years. Do you know about Diantimony trioxide?

The official answer:Antimony trioxide is an inorganic compound with the chemical formula Sb2O3. the natural product is called antimony wah, commonly known as antimony white, white crystalline powder. Melting point 655℃. Boiling point 1550℃. Soluble in sodium hydroxide solution, hot tartaric acid solution, hydrogen tartrate solution, and sodium sulfide solution, slightly soluble in water 370±37 µg/L, dilute nitric acid, and dilute sulfuric acid. Carcinogenic potential. Preparation methods are dry and wet, mainly used in white pigments, paints, and plastics can play the role of pigment and flame retardant.

What’s the application of Diantimony trioxide?

Application 1: Used as a white pigment, white glass, enamel, medicine, cement, filler, mordant and fireproof coating, etc.

Application 2: Widely used as a flame retardant in plastic, rubber, textile, chemical fiber, pigment, paint, electronics, and other industries, also used as a catalyst and production materials in the chemical industry

Application 3: Used as high purity reagent, mordant and anti-gloss agent, also used in the preparation of pigments and antimony potassium tartrate

Use 4: Used as flame retardant for various resins, synthetic rubber, canvas, paper, paint, etc., a catalyst for petrochemicals and synthetic fibers. Used in the manufacture of mordant, emulsion, is the raw material for the synthesis of antimony salt. Used as an additive in the enamel industry to increase the opacity and surface luster of enamel. Used in the glass industry as a decolorizer instead of arsenious acid. Medicine, metallurgy, military industry, etc.

Use 5: Excellent inorganic white pigment, mainly used in the coloring of paints. Used as flame retardant for various resins, synthetic rubber, canvas, paper, paint, etc., a catalyst for petrochemicals and synthetic fibers. Used in the manufacture of mordant, emulsion, is the raw material for the synthesis of antimony salt. The enamel industry used to increase the opacity and surface luster of enamel. The glass industry is used as a decolorizer instead of arsenious acid.

Use 6: Antimony trioxide is a good covering agent, used as a white paint pigment. Used as a flame retardant of various resins, synthetic rubber canvas, paper, paint, etc., a catalyst of petrochemicals and synthetic fibers. Used in the manufacture of mordant, emulsion, for the manufacture of white glass, enamel, tartar, drugs, cement, is also the raw material for the synthesis of antimony salt, enamel industry additives to increase the opacity of enamel and surface gloss. Glass industry used as a decolorant instead of arsenious acid, etc.


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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.
India Shikhar
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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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...