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Diantimony trioxide CAS#1309-64-4
Basic Information
Diantimony trioxide is a white antimony oxide available in orthorhombic and cubic crystal forms. It is practically insoluble in water and organic solvents but dissolves in acids and caustic alkalis, while its high refractive index and thermal stability support demanding formulations. It is used primarily as a flame-retardant additive in plastics, as a white pigment whose particle size influences opacity, and in specialty glass, ceramic and catalyst systems.
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Dual Crystal Forms：Available in orthorhombic (valentinite) and cubic (senarmontite) structures, offering stable physical properties for diverse industrial applications.
High Thermal Stability：Melts at 656 °C and sublimes at elevated temperatures, ensuring reliable performance in high-temperature processing and refining operations.
Excellent Chemical Resistance：Practically insoluble in water and organic solvents, while readily soluble in acids and alkalis, enabling controlled reactivity in chemical formulations.
High Purity Optical Properties：High refractive index (2.087) and well-defined molecular structure (Sb₂O₆ dimers) support use in specialty glass, ceramics, and catalyst systems.
Product Description of Diantimony trioxide CAS#1309-64-4
Antimony trioxide: orthorhombic (valentinite, 5.67 g/cm³) or cubic (senarmontite, 5.20 g/cm³, dimeric Sb₂O₆). Refractive index 2.087; mp 656 °C (O₂-free); bp 1550 °C (sublimes); sublimes at 400 °C (vacuum). Very slightly soluble in water, insoluble in organics; soluble in HCl, caustic alkalis and tartaric acid.
Product Application of Diantimony trioxide CAS#1309-64-4
Diantimony trioxide is a key flame-retardant additive for plastics. Industrial grades (99.0–99.9% purity) are produced by oxidizing antimony metal/sulfide ores at 600–800 °C, with particle size controlled via processing. Also used as a white pigment; fine particles maximize whiteness/opacity, coarse grades for translucent plastics. Insoluble in water, low moisture loss.
Parameters
Safety Information
Delivery Time
Inventory 2-3 working days New manufacturing 7-10 working days
Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
We only provide highest quality goods available, accompanied by after support!
1. What products does Shandong Junzheng Chemical supply?
We supply inorganic chemicals, organic solvents, water treatment chemicals, and surfactants, including calcium chloride, soda ash, sodium bicarbonate, caustic soda, citric acid, ethyl acetate, and SLES. Please contact us to confirm specific product availability.
2. Which industries do your products serve?
Our products serve pharmaceutical, agrochemical, dye, rubber, construction, coal processing, and other chemical industries. Product suitability depends on the required grade, specifications, and application.
3. How can I get a quotation?
Please provide the product name, CAS number, required specifications, quantity, packaging requirements, and destination port. These details help us prepare an accurate quotation.
4. How do you control product quality?
We follow strict quality testing procedures supported by technical personnel, research equipment, and an established management system. Specific quality requirements can be confirmed before placing an order.
5. Can you help me select a suitable chemical?
Yes. Our technical team can assist with product selection based on your application and required specifications. Please share your intended use and key technical requirements.
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