Bis[3-(triethoxysilyl)propyl] tetrasulfide

Bis[3‑(Triethoxysilyl)propyl] Tetrasulfide

Basic Information:

• CAS Number: 40372‑72‑3
• Molecular Formula: C₁₈H₄₂O₆S₄Si₂
• Molecular Weight: 538.95 g/mol
• Product Code: B803049
• Pack Size: 100 mL
• Appearance: clear, light yellow to amber-colored viscous liquid

Product Description:

• Bis[3‑(triethoxysilyl)propyl] tetrasulfide (also known as TESPT or Si‑69) is an organosilane coupling agent used to improve adhesion between inorganic fillers and polymer matrices, especially in rubber and composite materials.

Storage & Handling:

• Store in a cool, dry, well‑ventilated place, tightly sealed away from moisture and heat. Handle with appropriate protective gloves, goggles, and clothing, and avoid direct contact.

Safety Information:

• May cause skin irritation, serious eye irritation, and respiratory irritation.
• Combustible liquid — keep away from open flames and heat sources.
• Use in well‑ventilated areas and follow safety protocols.