Silazane Monomers
High-purity silazane monomers for silylation, adhesion promotion and surface treatment. Two grades — methyl and vinyl functional.
The grades
Grades in this family. Specifications are confirmed in the product TDS.
EK-S8003
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Hexamethyldisilazane (HMDS), CAS 999-97-3
Ultra-high-purity HMDS, assay ≥99.5% and chloride ≤10 ppm; silylating agent and photoresist adhesion promoter.
EK-S8004
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Tetramethyldivinyldisilazane, CAS 7691-02-3
Vinyl-functional silazane monomer, assay ≥99.0% and chloride ≤10 ppm; filler modification for liquid silicone rubber.
Compare grades
How the grades in this family differ. Exact values are confirmed in each product TDS.
EK-S8003
Colourless liquid
Assay ≥99.5%
999-97-3
Silylating agent; photoresist adhesion promoter
EK-S8004
Colourless liquid
Assay ≥99.0%
7691-02-3
Silicone rubber filler modification; photoresist promoter
* Full specifications are confirmed in the product TDS — request the TDS library for exact data.
Key properties
Typical properties of this family — exact values depend on product grade and are confirmed in the TDS.
High purity
Assay ≥99.0–99.5%, chloride ≤10 ppm.
Silylating chemistry
Reagent for pharmaceutical intermediates.
Electronics grade
Adhesion promoter for photoresists.
Powder treatment
Hydrophobic surface treatment of fillers.
Silicone modification
Filler modification for liquid silicone rubber.
Two grades
Methyl and vinyl silazane monomers; full data per TDS.
Applications
Industrial challenges where this material family is typically evaluated.
Documents
Request the documents you need, or start a guided evaluation — everything is provided per product grade.
FAQ
Common questions about this material family.
What is the difference between EK-S8003 and EK-S8004?
EK-S8003 is hexamethyldisilazane, a methyl-functional silylating agent. EK-S8004 is tetramethyldivinyldisilazane and carries vinyl groups, which let it react into silicone and polymer systems. Exact specifications are given in each product TDS.
Can I test the material before committing to volume?
Yes — sample support is available for qualified B2B projects after a short technical review.
How should the material be handled?
Both grades are classified as Class 3 dangerous goods and must be shipped accordingly — closed-cup flash points are 11.4 °C for EK-S8003 and 34 °C for EK-S8004. Both hydrolyse on contact with moisture. Keep containers closed, away from open flame, and work in a well-ventilated area.
Are these ready-to-use products?
No. Silazane monomers are raw materials for synthesis, surface treatment and polymer modification — not finished coatings.
What is the minimum order quantity?
MOQ depends on the grade and packaging format. Standard packaging is 25 L and 200 L drums, with a 1 t IBC available for EK-S8003 — to be confirmed with our team for your case.
Send request
From first enquiry to qualified bulk supply — send your requirements below.
01
Send requirement
Application, substrate and performance target.
02
Suitable material family and product grade.
03
Receive TDS/SDS, catalog & sample
Documentation and sample for evaluation.
04
Test material
Validate on your substrate and process.
05
Confirm & bulk supply
Specification agreement and ongoing supply.
About silazane monomers
Silazane monomers are low-molecular-weight silicon–nitrogen compounds used as silylating agents, adhesion promoters and surface treatments. The methyl grade is long established in pharmaceutical synthesis and in the semiconductor industry; the vinyl grade adds reactive unsaturation for silicone and polymer modification.
Typical evaluation starts with the target reaction or substrate, the purity required and the process conditions.