Antimony Metal 99.65 99.85 99.9

Product Name:Antimony Metal 
Element symbol: Sb
Atomic weight: 121.75
Appearance: Silver white solid.
Registered trademark: "Zhonghuan" brand
Execution standards: GB-T1599-2014
Customs code: 81101010.00
Antimony, a Group VA element in the fifth period, is a metalloid element with the element number Sb, atomic number 51, and relative atomic mass 121.76. Antimony is a silver white, fragile, and easily melted crystalline solid with poor conductivity and thermal conductivity, which sublimates when heated. Antimony does not undergo oxidation reaction with oxygen at room temperature, but burns to form white antimony oxide under strong heat. Insoluble in water, hydrochloric acid, and alkaline solution, soluble in aqua regia and hot concentrated sulfuric acid, with a melting point of 630.5 ° C, boiling point of 1635 ° C, relative density (water=1) of 6.68, atomic diameter of antimony (Goldschmidt data) of 3.228 Å, and electronegativity of 2.05.

Physical and chemical properties
Common packaging methods
Wooden box packaging
Structure: Generally, wooden boards with uniform thickness are used to build wooden boxes. The size of the wooden boxes is customized according to the size and quantity of antimony ingots. They are usually rectangular in shape, and some buffer materials such as straw and sawdust are used for padding and isolation inside.
Advantages: Wooden boxes have certain strength and stability, which can better protect antimony ingots from collision and extrusion damage during transportation and storage. At the same time, wood is relatively light and easy to load and unload and carry.
Application scenarios: It is suitable for packaging antimony ingots for long-distance transportation and export, and can adapt to different modes of transportation, such as sea transportation and land transportation.
Iron barrel packaging
Structure: Iron barrels are made of iron plates with moderate thickness. The barrel body is generally cylindrical and has a sealed barrel cover. Some anti-rust treatment may be performed inside the iron barrel, such as spraying anti-rust paint.
Advantages: Iron barrels have good sealing and moisture resistance, which can effectively prevent antimony ingots from contacting with air, moisture, etc., and avoid oxidation and rust. At the same time, the iron barrel is highly sturdy and can withstand certain pressure and impact.
Application scenarios: For some antimony ingots with high requirements for moisture resistance and sealing, especially in humid environments or ocean transportation, iron barrel packaging is more suitable.
Pallet packaging
Construction: The antimony ingots are neatly stacked on the pallet, and then fixed and tied with plastic film or steel belts. Pallets are generally made of wood, plastic or metal, and are mostly rectangular in shape.
Advantages: Pallet packaging is convenient for mechanized loading and unloading and handling, which can improve logistics efficiency and reduce labor intensity. At the same time, through reasonable stacking and fixing, the stability of antimony ingots during transportation can be guaranteed.
Application scenarios: It is widely used in domestic short-distance transportation and warehousing links, and is often used for transportation from factory to warehouse, warehouse to user enterprise, etc.

The relationship between the vapor pressure p (Pa) and temperature T (K) of metallic antimony can be calculated using the following formula:
When the temperature is below or equal to 1300 ° C: lgp=7.995-6060/T
When the temperature exceeds 1300 ° C: lgp=9.154-7880/T
Preparation method
1. Industrial production includes distillation method and zone melting method. In the distillation method, antimony blocks are added to the reactor, and chlorine gas is introduced for chlorination reaction to generate antimony trichloride. The crude antimony trichloride is added to the distiller, and a small amount of metal antimony chips are added. Antimony pentachloride and its impurities are removed by vacuum distillation, and then distilled under normal pressure. The fraction at 221-225°C is taken, cooled and crystallized to obtain antimony trichloride. After reduction, the purity of metal antimony is ≥99.9%. Then, this metal antimony is used as the raw material, and after double distillation, the purity of high-purity antimony is ≥99.99%.
2. Stir antimony, sodium nitrate and sodium carbonate in a ratio of 1:1.25:0.25 and heat until slightly red. After cooling, wash the mixture with water to remove sodium nitrite. The remaining sodium antimonate is washed and dried and then eutectic with an equal amount of potassium hydrogen tartrate. The antimony prepared by this method does not contain As, Na, K, but contains a small amount of Fe and Cu.