High Purity antimony trioxide ( ATO,Sb2o3, CAS NO.1309-64-4, ) in China for PVC in china china supplier of antimony trioxide.
antimony trioxide is an added flame retardant, antimony trioxide flame retardanting the early stage of combustion, the first is melting, forming a protective film on the surface of the material to isolate the air, through the internal endothermic reaction, reduce the combustion temperature. At high temperatures,antimony trioxide is vaporized, diluting the oxygen concentration in the air and thus playing a flame retardant role.
Antimony trioxide: In the vast world of chemical raw materials, antimony trioxide occupies an indispensable position due to its unique properties. Its chemical formula is Sb ₂ O ∝, which is an important inorganic compound. From the appearance, it appears as a white crystalline powder, delicate and pure, with uniform color, giving people a high-quality intuitive feeling.
Antimony trioxide has many unique physical properties. Its melting point is relatively high, around 655 ℃. This high melting point characteristic allows it to maintain a stable physical form in some high-temperature environments and will not easily melt or deform. At the same time, its relative density is relatively high, about 5.2-5.6, which allows it to be evenly dispersed in the system with its weight advantage when mixed with other substances, thus fully exerting its function. Moreover, antimony trioxide has excellent covering power and can effectively cover the background color of the object being coated, which has important applications in fields such as coatings and paints.
In terms of chemical properties, antimony trioxide is an amphoteric oxide that can react with acids to form corresponding salts and with bases. This special chemical property endows it with the ability to play an important role in numerous chemical reactions. When reacting with acid, it can generate different antimony salts according to the type of acid and reaction conditions. These antimony salts have a wide range of applications in fields such as medicine and electronics; When reacting with alkali, it can also form compounds with specific structures and properties, providing raw material support for some special industrial production.
Antimony trioxide is widely used in the industrial field. In the field of flame retardancy, it can be regarded as a star product. As an efficient flame retardant synergist, it can produce a strong synergistic flame retardant effect when used in combination with halogen flame retardants. When materials containing antimony trioxide and halogen flame retardants encounter a fire source, antimony trioxide reacts with halogens to form antimony halides. Antimony halides decompose at high temperatures, and the generated free radicals can capture the active free radicals produced during the combustion process of the material, thereby interrupting the chain reaction of combustion and effectively preventing the spread of flames, greatly improving the flame retardant performance of the material. It is widely used in industries such as plastics, rubber, textiles, etc., and provides these materials with a fireproof "safety coat". Antimony trioxide is an important clarifying and decolorizing agent in the glass industry. It can reduce the surface tension of the glass liquid, making it easier for bubbles in the glass liquid to be expelled, thereby improving the transparency and uniformity of the glass; At the same time, it can react with impurities such as iron in the glass, remove the color of the glass, make the glass clearer and more transparent, and improve the quality and aesthetics of glass products. In the enamel industry, antimony trioxide can be used as an opalescent agent to form a uniform and delicate opalescent layer on the surface of enamel products, increasing the covering power and glossiness of enamel, making enamel products not only practical but also aesthetically pleasing.
Physical and Chemical Properties
| Items | Unit | ||
| Sb2O3 | % | ≥99.80 | ≥99.50 |
| As2O3 | % | ≤0.05 | ≤0.06 |
| PbO | % | ≤0.08 | ≤0.10 |
| Fe2O3 | % | ≤0.005 | ≤0.006 |
| CuO | % | ≤0.002 | ≤0.002 |
| Se | % | ≤0.004 | ≤0.005 |
| Whiteness | % | ≥95 | ≥93 |
| Particle size , D50 | μm | 0.5-1.3 | 0.5-1.3 |
Packaging : Net weight 25kg/bag, Compound paper-plastic bag
Storage and Attention : Keep in dry, room temperature and moisture proof condition, preventing the heating.
