Tetraethyl orthosilicate It is widely used in materials science and organic synthesis CAS 78-10-4 EC 201-083-8 Grade AR

Safety Information

• Hazard Statements
  • H319: Causes serious eye irritation.
  • H315: Causes skin irritation.
  • H335: May cause respiratory irritation.
  • H411: Toxic to aquatic life with long-lasting effects.
• Precautionary Statements
  • P280: Wear protective gloves/protective clothing/eye protection/face protection.
  • P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
  • P304+P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing.
  • P273: Avoid release to the environment.

Applications

• Silicon Dioxide Films: TEOS is ideal for preparing high-quality silicon dioxide films.
• Optical Fiber Manufacturing: Used as a silicon source in optical fiber production, providing pure silicon material.
• Ceramic Materials: Serves as a precursor in the preparation of ceramic materials, enhancing their mechanical and thermal properties.
• Organic Synthesis: Used as a solvent and catalyst in esterification and hydroxylation reactions, among others.

Summary

Tetraethyl orthosilicate (TEOS) is a versatile and highly valuable compound in materials science and organic synthesis, playing a significant role in creating silicon dioxide films, optical fibers, and ceramics, and acting as a catalyst and solvent. The analytical reagent (AR) grade ensures high purity, suitable for various precise applications. Always follow safety precautions when handling this chemical.

| Property            | Details                           |
|---------------------|-----------------------------------|
| Product Name        | Tetraethyl Orthosilicate (TEOS)   |
| Specification       | Analytical Reagent (AR)           |
| Batch Number        | 2023060901                        |
| Molecular Formula   | (C2H5)4SiO4                       |
| Molecular Weight    | 208.33 g/mol                      |
| Batch Quantity      | 190 kg                            |
| Submitting Unit     | Production Department One         |
| Sample Category     | Organic                           |
| Report Date         | 2023.06.11                        |
| Test Standard       | Q/CDKLHX0050-2016A                |

| Test Item                    | Standard Requirement       | Measured Result           |
|------------------------------|----------------------------|---------------------------|
| Content (as SiO2), %         | ≥28.0                      | 29.0                      |
| Appearance                   | Colorless transparent liquid | Colorless transparent liquid |
| Relative Density d20/4       | 0.929–0.936                | 0.933                     |
| Free Acid (as HCl), %        | ≤0.04                      | 0.005                     |