AL2CHEM SPECIALTIES AL 69 Silane

AL69 is a bifunctional polysulfidic organosilane for the rubber industry. It is used to improve the reinforcing capability of fillers with silanol group on their surface (e.g., silicas, silicates, clay, etc.), and also as an integral part of curing systems to improve crosslinking network properties.

Chemical Name: Bis[3- (triethoxysilyl) propyl] tetrasulfide

Functions: Crosslinking Agent, Reinforcement

Chemical Family: Sulfide Compounds

Technical Data Sheet

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Identification & Functionality

Chemical Family
Plastics & Elastomers Functions
Chemical Formula
C18H42O6S4Si2
CAS No.
40372-72-3
EC No.
254-896-5
Technologies
Secondary Components
  • Propyltriethoxysilane, Ethanol
  • Chloropropyltriethoxylsilane

Features & Benefits

Applications & Uses

Applications

Footwear

  • Abrasion resistance
  • Cutting and chunking resistance
  • Flex life improvement

Rolls

  • Abrasion resistance
  • Aging resistance
  • Processing
  • Set reduction (better load bearing)
  • Reduced water swell
  • Lower hysteresis

Properties

Physical Form
Appearance
Yellowish liquid
Insoluble in
Water
Soluble in
Ketones, Toluene, Benzene, Chlorinated Hydrocarbons, Acetonitrile, Primary alcohols, Dimethyl Formamide, Dimethysulfoxide
Typical Physical Properties
ValueUnitsTest Method / Conditions
Average Chain Length3.75 +/- 0.15%
Boiling PointDecomposition above 250°C°C
Density (16/24°C)1.1 +/- 0.02g/cm³
Flash Pointmin. 110°C
Molecular Weight539
Total Sulfur Content22.7 +/- 0.5%
Volatiles Componentsmax. 4.0%