Specification: Brand new Size: approx.100 × 100 × 0.5mm Density: 7.14 g / cc Melting point: 419.5 ℃ Feature: Make of High Purity zinc material,solid and durable, never rust. Suitable for: a variety of experimental situations. Zinc plates are widely used in exterior and interior room decoration, electrical, electronic goods, auto parts and drainage pipes. Chemical properties description: Zinc is a bluish-white metal. A density of 7.14 g / cc, a melting point of 419.5 ℃. At room temperature, brittle; 100 ~ 150 ℃, become softened; exceed 200 ℃, they become brittle. In nature, the multi-state presence sulfide. Zinc chemically is active. In the air of normal temperature, the surface will form a layer of zinc carbonate film. It can prevent further oxidation. Atomic radius: Atomic radius (calc) 135 (142) pm Covalent radius 131 pm Van der Waals radius 139 pm Content (ppm): The content of elements in the sun: 2 Content elements in seawater: 0.00005 (trace elements) Content of the crust: 75 (trace elements) Crystal structure: Hexagonal Extranuclear atomic arrangement: 2,8,18,2 Nuclear charge: 30 Package included: 1pc x zinc sheet Note: Please allow 1-2cm errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. 1.We ship to worldwide， I will add a tracking number in EBAY 2. Make sure your Address is correct. A phone number is recommended for a more accurate delivery. 3.We try our best to provide you the most reliable, affordable way of shipping service. But sometimes international delivery is highly depended on the local customs and post service. If you do not receive your item on time, please contact us immediately for further assistance. We will be responsible for any damages or losses incurred in the shipping process. Country Shipping time Note USA ,Russia（e-packet dispatch） 5-12 working days ≥20 days, contact me USA ,Australia, United Kingdom（Economy Shipping from outside US） 15-25 days, sometimes 30 days ≥30 days, contact me France 15-28 days, sometimes 30-35 days ≥35 days, contact me Brazil, Spain, Canada 20-40 days, sometimes 40-45 days ≥45 days, contact me Other country Normally 25-30 days to reach ≥30 days, contact me After purchase.Isendgoodswithin12 hours.And Illadd a trackingnumbertotheEBAY.Thistracking numbercan querythePost. ● I am very glad to solve your any problem on my items. ● Feel free to contact me via Ebay message or Email. Usually I will respond in 24 hours.. ● We greatly appreciate your POSITIVE feedback. Once your payment is clear, our automated process will respond by giving you positive feedback that same day. ● Negative or Neutral feedback does not resolve any underlying issues that you may be experiencing as a buyer.Any question or unsatisfaction please contact us with ebay message,we will sincerely solve for you.