Liquid

Manta L1231 Dodecyltrimethoxysilane

N-Dodecyltrimethoxysilane

Product Code
Manta L1231
CAS Number
3069-21-4
Manta L1231 Dodecyltrimethoxysilane

Technical Specifications

Parameter Value / Range
Appearance: Colorless transparent liquid
Purity (by GC, %) 98.0 min
Specific Gravity (ρ20°C, g/cm3) 0.885~0.895
Refractive Index (nD 25°C): 1.4220~1.4320

Product Description

Manta L1231 is a monomeric long-chain alkyl functional silane, chemically identified as n-dodecyltrimethoxysilane. Featuring a 12-carbon (C12) linear alkyl chain, this product delivers exceptional hydrophobicity and outstanding weather resistance (UV stability).

Compared to shorter-chain silanes (e.g., C8 or C10), its heavier molecular structure significantly reduces volatility and provides a moderate, highly controlled penetration depth. This makes Manta L1231 exceptionally ideal for treating highly sensitive substrates and achieving premium, long-lasting surface modification without altering the natural breathability or aesthetics.

Chemically equivalent to Wacker GENIOSIL® DD-Trimethoxy, and serves as a long-chain functional upgrade to C10 silanes such as Shin-Etsu KBM-3103.

Applications

Manta L1231 is highly versatile and serves as a premium water repellent and interface modifier across a wide spectrum of industries:

  1. Cultural Heritage Conservation (Specialty Use): > Due to its extremely low volatility, controlled penetration, and durable hydrophobic network, it is highly recommended for the protection and restoration of historical monuments, artifacts, and highly sensitive porous masonry.
  2. Natural Stone & Concrete Protection: > Provides deep, long-lasting water repellency for premium natural stone, masonry, and concrete while retaining 100% water vapor permeability and the original appearance of the substrate.
  3. Surface Modification of Mineral Fillers: Significantly improves the dispersibility, compatibility, and hydrophobicity of inorganic fillers and pigments in non-polar plastics, rubbers, and resin matrices.
  4. Coatings, Adhesives & Sealants: Acts as a performance-enhancing additive to dramatically improve moisture resistance and interfacial adhesion.
  5. Mold Release Applications: Effectively functions as a semi-permanent release agent in various molding processes due to the strong non-polar nature and low surface energy of its long C12 alkyl chain.

Application Areas

Adhesives & Sealants Paints & Coatings Concrete, Masonry & Stone Protection Plastics & Masterbatches Composites & Fiberglass

Packaging & Handling

Packaging

In 20kg pail, 180kg drum and 900kg IBC

 

Safety and Storage

Highly Reactive & Methanol Release: Manta L1231 reacts with water and atmospheric moisture to form cross-linked polysiloxanes. CRITICAL WARNING: This hydrolysis reaction releases METHANOL as a toxic and highly flammable byproduct. Strictly ensure excellent local exhaust ventilation during formulation, application, and curing to prevent vapor accumulation.

Storage Conditions: Store in a cool, dry, and well-ventilated area strictly away from open flames and moisture. Keep containers hermetically sealed at all times to prevent premature moisture cross-linking.

Shelf life is 12 months. It is non-hazardous substance.

Documents & Downloads

Frequently Asked Questions

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