Si69 Min 98% Bis[3- (triethoxysilyl) Propyl]Tetrasulfide, Si69, CAS No. 40372-72-3, a-1289, 7

HENGDA Chemical is the first and best manufacturer of
silane coupling agents in China since 1965. 

Product Code	HENGDA-Si69
Chemical Name	Bis[3-(triethoxysilyl)propyl]tetrasulfide
CAS#	40372-72-3
Equivalent name	A-1289, Si69

1. HENGDA-Si69 is a multifunctional additive that has been successfully applied in the silicone rubber and tire industry. It is to increase the elastic modulus and tensile strength of rubber, significantly improve the wear resistance and compression performance of rubber, reduce the viscosity of rubber, and save processing energy consumption.
2. HENGDA-Si69 is suitable for rubber formulations that use hydroxyl fillers in double bond-containing polymers or their blends.
   Applicable fillers include silica, silicate, chalk, etc.; applicable rubbers include natural rubber (NR), styrene-butadiene rubber (SBR), isoprene rubber (IR), butadiene rubber (BR), nitrile Rubber (NBR) and ethylene propylene diene monomer (EPDM), etc.
    

Appearance:  
Light yellowish transparent liquid
MW: 538.95
Specific Gravity (ρ20°C, g/cm3):1.06-1.10
Purity (%):≥98%

ISO9001
SGS

Hengda Chemical, headquartered in Gaizhou, Liaoning province, we are the first manufacturer of silane coupling agents in China since 1965.

HENGDA products cover 12 series of silane coupling agents and crosslinking agents including amino silane, methacrylate silane, epoxy silane, vinyl silane, mercapto silane, alkyl silane, ethyl silicate, chlorine silane, isocyanate silane, phenyl silane, ureido silane, and sulfur silane.

HENGDA silane coupling agents are widely used in fiberglass, adhesives &sealants, resin, coatings, wire & cable, solar PV, textile auxiliaries, pigment filler, silicone fluid, precision casting, building protection, plastics and composites, rubber & tires, foundry, aerogels, and artificial stone.

HENGDA production lines are equipped with DCS remote-control operating system, safety instrument system and environmental protection treatment facilities.

Relying on advanced production equipment, complete testing methods and quality management system (ISO 9001), HENGDA Chemical provides customers with stable high-quality products and services. We have become customers' reliable long-term suppliers in over 57 countries and regions.

1.  The First Manufacturer of silane coupling agents in China since 1965. We have the most production experience in silane coupling agents. 
2. Professional in Producing  High-Quality Silane Coupling Agents. 
3. Safety facilities such as DCS automatic remote control operating system, SIS safety instrumentation system; environmental treatment facilities such as waste gas collection and treatment system, sewage treatment system.
4. Well-trusted by world customers covering over 57 countries and regions. 
 

2. Lead time:
1) Non-dangerous goods: about 2 weeks after order confirmation. The specific delivery time varies depending on inventory and logistics conditions.
2) Dangerous goods: about 3 -4 weeks after order confirmation. The specific delivery time varies depending on inventory and logistics conditions.

3. Shelf life: 1 year after production date.