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Diantimony Trioxide Flame Retardant Chemical CAS 1309-64-4 Non Toxic Additive

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Diantimony Trioxide Flame Retardant Chemical CAS 1309-64-4 Non Toxic Additive

Brand Name : Qida FR
Model Number : 32040
Certification : ISO9001/ISO14001/OHSAS18001/RoHS/WEEE
Place of Origin : China
MOQ : 200Kg
Price : Negotiation
Payment Terms : T/T , L/C, CAD , D/P , D/A
Supply Ability : 5000T/a
Delivery Time : Two weeks after confirmation
Packaging Details : 25Kg bags
Product Name : Diantimony Trioxide
Chemical Name : Diantimony Trioxide
CAS No. : 1309-64-4
Formula : Sb2O3
Synonyms : Di-antimony Trioxide; Antimony Oxide ;
Appearance : White powder
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Diantimony Trioxide Flame Retardant Chemical CAS 1309-64-4 Non Toxic Additive


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.

Antimony(III) oxide 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(III) oxide 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.


Inorganic Chemical; Essential Organics; Flame retardant; Metal Oxide



White Powder

Content %

98.0 Min. or 99.0 Min.

Particle Size (um)

0.4 - 0.8

Whiteness94 - 96


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.

Antimony(III) oxide is an opacifying agent for glasses, ceramics and enamels.
Some specialty pigments contain antimony.
Antimony(III) oxide is a useful catalyst in the production of polyethylene terephthalate (PET plastic) and the vulcanization of rubber.

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Product Tags:

chemical flame retardants


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