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MOSINTER GROUP LIMITED
MOSINTER GROUP LIMITED

China Antimony III oxide CAS 1309-64-4 DI-ANTIMONY TRIOXIDE ANTIMON III OXIDE ANTIMONY TRIOXIDE. ANTIMONY OXIDE manufacturer

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Antimony III oxide CAS 1309-64-4 DI-ANTIMONY TRIOXIDE ANTIMON III OXIDE ANTIMONY TRIOXIDE. ANTIMONY OXIDE 

Payment Terms: T/T,L/C,WU 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Means of Transport: Ocean,Land,Air
Packing: As per request of clients
Brand Name: MOSINTER
Appearance: white powder
As2O3 %max: 0.06
Fe2O3 %max: 0.006
Se %max: 0.005
The average particle size(μm): 0.9-1.6
Production Capacity: 3000 tons/year
Delivery Date: within 7 days
CAS No.: 1309-64-4
Sb2O3 %min: 99.5
PbO %max: 0.1
CuO %max: 0.006
Whiteness: 95.0

Antimony trioxide is the inorganic compound with the formula Sb2O3. It is the most important commercial compound of antimony.

Antimony(III) oxide (CAS: 1309-64-4)

 

Item

Index

Sb2O3 %min

99.5

As2O3 %max

0.06

PbO   %max

0.1

Fe2O3 %max

0.006

CuO   %max

0.006

Se   %max

0.005

Whiteness

95.0

The average particle size(μm)

0.9-1.6

Antimony trioxide 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.

Production and properties

Global production of antimony trioxide in 2012 was 130,000 tonnes, an increase from 112,600 tonnes in 2002. China produces the largest share followed by US/Mexico, Europe, Japan and South Africa and other countries (2%).

As of 2010, antimony trioxide was produced at four sites in EU27. It is produced via two routes, re-volatilizing of crude antimony trioxide and by oxidation of antimony metal. Oxidation of antimony metal dominates in Europe. Several processes for the production of crude antimony trioxide or metallic antimony from virgin material. The choice of process depends on the composition of the ore and other factors. Typical steps include mining, crushing and grinding of ore, sometimes followed by froth flotation and separation of the metal using pyrometallurgical processes (smelting or roasting) or in a few cases (e.g. when the ore is rich in precious metals) by hydrometallurgical processes. These steps do not take place in the EU but closer to the mining location.

Re-volatilizing of crude antimony trioxide

Step 1) Crude stibnite is oxidised to crude antimony trioxide using furnaces operating at approximately 850 to 1,000 °C. The reaction is the following:

2 Sb2S3 + 9 O2 → 2 Sb2O3 + 6 SO2

Step 2) The crude antimony trioxide is vaporised and condensed

Oxidation of antimony metal

Antimony metal is oxidized to antimony trioxide in furnaces. The reaction is exothermic. Antimony trioxide is formed through sublimation and recovered in bag filters (bag house). The size of the formed particles is controlled by process conditions in furnace and gas flow. The reaction can be schematically described by:

4 Sb + 3 O2 → 2 Sb2O3

Properties

Antimony trioxide is an amphoteric oxide, it dissolves in aqueous sodium hydroxide solution to give the meta-antimonite NaSbO2, which can be isolated as the trihydrate. Antimony trioxide also dissolves in concentrated mineral acids to give the corresponding salts, which hydrolyzes upon dilution with water. With nitric acid, the trioxide is oxidized to antimony(V) oxide.

When heated with carbon, the oxide is reduced to antimony metal. With other reducing agents such as sodium borohydride or lithium aluminium hydride, the unstable and very toxic gas stibine is produced. When heated with potassium bitartrate, a complex salt potassium antimony tartrate, KSb(OH)2•C4H2O6 is formed.

Uses

The annual consumption of antimony trioxide in the United States and Europe is approximately 10,000 and 25,000 tonnes, respectively. The main application is as flame retardant synergist in combination with halogenated materials. The combination of the halides and the antimony being key to the flame-retardant action for polymers, helping to form less flammable chars. Such flame retardants are found in electrical apparatus, textiles, leather, and coatings.

Other applications:

  • Antimony trioxide is an opacifying agent for glasses, ceramics and enamels.

  • Some specialty pigments contain antimony.

  • Antimony trioxide is a useful catalyst in the production of polyethylene terephthalate (PET plastic) and the vulcanization of rubber.

  • Safety

    Antimony trioxide has suspected carcinogenic potential for humans. Its TLV is 0.5 mg/m3, as for most antimony compounds.
    No other human health hazards were identified for antimony trioxide, and no risks to human health and the environment were identified from the production and use of antimony trioxide in daily life.

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Company Info

MOSINTER GROUP LIMITED [China (Mainland)]

sgs ico Offline Showroom in USA

Business Type:Manufacturer, Trading Company
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)

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