Overview
Tin (CAS 7440-31-5 ) is a base metal supplied in refined elemental form, used across metallurgy, chemical synthesis, and industrial manufacturing. It serves as a foundational raw material for producing alloys and inorganic tin compounds.
Procurement demand spans solder production, chemical manufacturing, and surface coating applications. In electronics and automotive manufacturing, tin is the primary constituent of lead-free solder alloys used in PCB assembly.
Tin compounds derived from the refined metal function as catalysts in polyurethane and silicone curing systems, making it a direct precursor for catalyst manufacturers. This metal is essential for high-performance industrial systems.
In plastics processing, tin-based stabilizers produced from elemental tin provide heat and UV resistance in PVC formulations. The metal also feeds into the production of tin oxide and organotin biocides used in coatings.
Refined tin is supplied as ingots, bars, granules, and shot, with purity levels typically ranging from 99.85% to 99.99%. Standard commercial grades conform to LME specifications for global trade.
Higher-purity electronic and chemical grades are available for sensitive synthesis applications. Packaging is offered in bulk metric-ton quantities as well as smaller lot sizes for laboratory and specialty chemical use.
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Physical Properties
| Melting Point | 231.9 °C |
| Boiling Point | 2507 °C |
| Density | 7.31 g/cm³ |
| Flash Point | 2270°C |
| Appearance | Tin is a gray to almost silver-white, ductile, malleable, lustrous metal. |
| Color | Silvery-gray |
| Form | wire |
| Water Solubility | reacts slowly with cold dilute HCl, dilute HNO3, hot dilute H2SO4; readily with conc HCl, aqua regia [MER06] |
| Vapor Pressure | 1Pa at 1223.85℃ |
Safety & Handling
Warning GHS07 GHS08 Hazard Statements H319 Causes serious eye irritation H335 May cause respiratory irritation H372 Causes damage to organs through prolonged or repeated exposure Precautionary Statements P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P319 Get medical advice/attention if you feel unwell. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 80070080 |
| UN Number | 3264 |
| ADR Class | 8 |
| Packing Group | II |
| Storage Class | 13 - Non Combustible Solids |
| WGK (Germany) | 1 |
Other Names
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Chemical Properties
- CAS Number
- 7440-31-5
- EC Number
- 231-141-8
- Mol. Weight
- 118.71
- HS Code
- 80070080
- Category
- Flame Retardants