52360

Hexadecyltrimethoxysilane

technical, ≥85% (GC)

• Synonym(s): Trimethoxyhexadecylsilane
• Linear Formula: H₃C(CH₂)₁₅Si(OCH₃)₃
• CAS Number: 16415-12-6
• Molecular Weight: 346.62
• UNSPSC Code: 12352103
• NACRES: NA.23
• PubChem Substance ID: 57651368
• EC Number: 240-464-3
• Beilstein/REAXYS Number: 1949851
• MDL number: MFCD00069149

Properties

• grade: technical
• Quality Segment: 100
• assay: ≥85% (GC)
• form: liquid
• impurities: isomers
• refractive index: n20/D 1.44
• density: 0.89 g/mL at 20 °C (lit.)
• SMILES string: CCCCCCCCCCCCCCCC[Si](OC)(OC)OC
• InChI: 1S/C19H42O3Si/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-23(20-2,21-3)22-4/h5-19H2,1-4H3
• InChI key: RSKGMYDENCAJEN-UHFFFAOYSA-N

Description

Application

Hexadecyltrimethoxysilane can be used as:

• A hydrophobic modifier to modify silica nanoparticles, enabling the creation of superhydrophobic particles and composites, which are ideal for applications in coatings and textiles.
• A key component in the fabrication of durable, fluorine-free superhydrophobic coatings by modifying halloysite nanotubes embedded in silicone-acrylic polymer films.
• An additive in the development of hydrophobic aerogels based on nanocellulose, where HDTMS contributes to the creation of materials with high oil adsorption capacities.

Features and Benefits

• Thermally Stable: Suitable for high-temperature applications and thermal curing processes.
• Moisture-Sensitive: Hydrolyzes in the presence of water to form reactive silanol groups that bond covalently to surfaces.
• Long Alkyl Chain: Provides excellent surface hydrophobicity due to its high surface energy barrier.

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk: WGK 1
• flash_point_f: 247.1 °F - closed cup
• flash_point_c: 119.5 °C - closed cup
• ppe: Eyeshields, Gloves, type ABEK (EN14387) respirator filter