Оксид сурьмы

Description

Antimony oxide (Sb2O3, trade forms known under the brands XXJ, FA 4, Celnax CX-Z 300H) is an odorless white crystalline powder. The chemical composition is the same as classical antimony trioxide and is used in the same roles as a synergist for fire retardants and a polymerization catalyst. The difference between positions with different brands usually comes down to particle dispersion, purity and specific surface area of ​​the powder - the manufacturer selects these parameters for a specific customer recipe, be it a polymer composition, paint composition or catalyst for polyester production.

Basic Attributes

• CAS No.: 1327-33-9
• Molecular Weight: 291.52
• Exact weight: 289.792
• EU number: 215-474-6
• PSA Features: 3
• XLogP3: -0.3564

Physico-chemical characteristics

• Appearance: white crystalline powder, odorless
• Density: 5.9 g/cm3 at 24 °C
• Melting point: 655 °C
• Boiling point: 1425 °C
• Solubility in water: slightly soluble in water, dilute sulfuric acid or dilute nitric acid; solubility in dilute hydrochloric acid (0.1 mol HCl/kg water) is about 1 × 10⁻⁴ g-atom Sb/kg water, solubility increases with increasing concentration of hydrochloric acid; soluble in solutions of alkali metal hydroxides and sulfides, in a warm solution of tartaric acid or bitartrates
• Steam pressure: 1 mm Hg. Art. at 574 °C

Precautions when storing carcinogens

The storage location should be as close as possible to the laboratory where the carcinogens will be used so that only small quantities of the substance are required during operation. Carcinogenic substances are stored only in a separate section of the cabinet, in an explosion-proof refrigerator or freezer, depending on their chemical and physical properties, with appropriate markings. Maintain inventory records indicating the quantity of the substance and the date of purchase; Dosing equipment is allocated separately for working with carcinogens.

Scope of application

Synergist of fire retardants in combination with halogen-containing flame retardants, catalyst for polycondensation of polyethylene terephthalate, similar to classical antimony trioxide. Like other grades of antimony trioxide, the substance is used in the plastics, rubber, synthetic fibers, coatings and glass industries, where a combination of high purity and controlled particle size is required.

Toxicity and danger

• Precautions: P261, P264, P270, P271, P273, P301+P312, P304+P312, P304+P340, P312, P330, P391, P501
• Hazard Statement: H302 - Harmful if swallowed

Storage

Store separately from incompatible materials, taking into account the carcinogenic classification of the substance, in labeled containers, ensuring limited access and accurate inventory control. Warehouses are equipped with exhaust ventilation, and work with powder is carried out to minimize dust formation.