Bis(triethoxysilyl)ethane
KH-516
| Chemical name: 1,2-bis (trimethoxy silyl) ethane | CAS No.: 18406-41-2 |
| Molecular formula and molecular structural formula: C8H22O6Si2 |
KH-526 (equal to Silquest Y-9805 of USA Momentive)
| Chemical name: 1, 2-bis (triethoxy silyl) ethane | CAS No.: 16068-37-4 |
| Molecular formula and molecular structural formula: C14H34O6Si2 |
Typical physical property:
| Indexes | 516 | 526 |
| Molecular Weight | 270.4 | 354.6 |
| Appearance and Odor | Colorless to light yellow clear and transparent liquid, with the smell of aromatic solvents | |
| Density (ρ20),g/cm3 | 1.068 | 0.957 |
| Boiling point (760mmHg),ºC | 103 | 96 |
| Solubleness | Soluble in alcohol, ketone, ether, benzene and other most aliphatic and aromatic solvent, it can hydrolyze in water, and the hydrolysate can agglutinate automatically. | |
Product characteristics and applications:
Silane coupling agents KH-516 and KH-526 are the new types of double silane, which has two silane structures in a molecule. There are 6 alkoxies in one molecule, which is two times of common silane coupling agent. Therefore, KH-516 and KH-526 can form higher cross-linking density on the surface of inorganic materials; meanwhile silicon alcohol produced by its hydrolysis is more acidic than that formed by common silane coupling agent. As a result it can form more strong covalent bonds with the hydroxyl on the surface of metal and inorganic material and is not easy to hydrolyze.
Specific applications of silane coupling agent KH-516 and KH-526 include:
1. Environmentally friendly surface treatment liquid without phosphorus and heavy metal, replacing traditional phosphating and passivation process.
2. Cross-linking agent in tackiness agent and sealants provides moisture curing function, and improve the adhesive strength to base material.
Packaging: 20KG/barrel
Storage conditions and shelf life: indoor storage under shade environment, keeping ventilated, cool and dry. Ensure the cover is sealed well and can isolate air effectively. The shelf life of original packaging product is one year and expired products can be used after qualified test.