Alias: antimony oxide,Diantimony trioxide

English name: Antimony Trioxide

Molecular formula: Sb2O3

Place of Origin: China

Grade Standard:Industrial Grade

CAS No.:1309-64-4



Solubility: soluble in HCL and tartaric acid; insoluble in water and acetic acid.

Melting point 655 ºC

Boiling point 1425 ºC. Sublimate when heated to 400 ºC in high vacuum.

vapor pressure: 13.3 hPa (660 °C)

storage temp:   Store below +30°C.

Appearance : white superfine powder,the crystal structure is mainly cubic crystal


1). Used as white pigment, white glass, enamel, medicine, cement, filler, mordant and fire retardant coating, etc

2). As a flame retardant widely used in plastics, rubber, textile, chemical fiber, pigment, paint, electronics and other industries, but also as a catalyst and production raw materials in the chemical industry

3). As a high purity reagent, mordant and anti – light agent, also used in the preparation of pigments and antimony potassium tartrate

4). Used as flame retardant for various resins, synthetic rubber, canvas, paper, paint, etc.,

5). A fine inorganic white pigment, mainly used for coloring paints. Used as flame retardant for various resins, synthetic rubber, canvas, paper, paint, etc.

6). Antimony trioxide is a good masking agent and is used as a white paint pigment.

2.Product Specification

Grade Sb2O3 99.90 Sb2O3 99.80 Sb2O3 99.60
chemical composition Sb2O3% ≥ 99.90 99.80 99.60
AS2O3% ≤ 0.030 0.05 0.06
PbO% ≤ 0.040 0.08 0.10
Fe2O3%< 0.002 0.005 0.006
CuO%< 0.001 0.001 0.002
Se%< 0.002 0.003 0.005
Physical properties Average particle size(µm) 04-0.6 0.4-0.6 0.4-0.6
0.6-0.9 0.6-0.9 0.6-0.9
> 0.9 > 0.9 > 0.9
Whiteness(%)Min  ≥ 98.00 98.00 97.00
Note: When the buyer has other needs, the production can be organized according to the needs.

3.Packaging & Delivery

We provide customers with individual products and expert technical service !

Packaging Steel drums : 25kg-1000kg. Other packing on request.

Packaging Details:

“25kg in english neutral plastic woven bag or 25kg per cardboard barrel or 1000kg bigbag”

Lead Time:

Quantity(kilograms) 1 – 1000 >1000

Est. Time(days) 7 To be negotiated

4.Q and A

Q1:Are you manufacture or trade?

A:We are manufacturer, our factory is located in China, but we can also provide one stop purchasing service for you!

Q2:What payment methods do you support?

A:  L/C or T/T


Located in China’s Largest Vanadium Zone

HUBEI OUSHI METAL CO., LTD. is located in the vanadium village of China, Shicheng, Chongyang county, Hubei province. Chongyang county has rich reserve of stone coal vanadium ore. Chongyang county has more than 30 years of development experience in the vanadium industry.

A Wide Range of Metal Mineral Products

We supply a great selection of metal mineral products, including antimony, manganese, molybdenum, silicone, vanadium and chromium. They are widely used in many industries such as steel, chemical, battery, agriculture, electronics and aerospace.

ISO-Certified Company

Our company has passed the certifications of ISO9001:2000 and ISO14001:2004. We specialize in the production and sale of vanadium products with high standards.