| Name | Dibutyltin Dilaurate |
| Formula | C32H64O4S |
| CAS No. | 77-58-7 |
| Molecular weight | 631.56 |
| Appearance | Light yellow oily liquid |
| Tin Content | 18.0%-19.0% |
| Water Content | Max. 0.5% |
| Color (PT-CO) | Max. 100 |
| Application | Gel catalyst for PU and heat stabilizer for PVC |
| Package | 200kgs drum or 1000kgs net IBC drum |
| Storage Condition | Keep in a cool dry place. |
| Shelf Life | One Year |
Premium Organotin Gel Catalyst and PVC Heat Stabilizer
MXC-T12 (Dibutyltin Dilaurate, DBTDL) is a highly versatile and potent organotin compound. Renowned as a strong Lewis acid, it delivers exceptional electrophilic catalytic activity for driving polyurethane gelation, alongside providing superior heat stability for PVC processing and rapid cross-linking for silicone systems
Molecular Architecture & Lewis Acid Catalysis
The fundamental geometry of MXC-T12 provides distinct reactive advantages across multiple high-performance polymer systems:
Tetrahedral Tin Core: The central tin atom acts as a powerful Lewis acid, coordinating effectively with both isocyanate and hydroxyl groups to dramatically accelerate the formation of urethane linkages.
Aliphatic Laurate Chains: The long fatty acid (laurate) chains attached to the tin center ensure the catalyst remains as an oily liquid at room temperature. This imparts excellent solubility in polyols and provides unique self-lubricating properties when incorporated into PVC blends.
Polyurethane Gelation & Mechanical Enhancement
For technical engineers formulating elastomers, CASE (Coatings, Adhesives, Sealants, and Elastomers), and structural foams, MXC-T12 is the gold standard for controlling the curing profile:
Exceptional Urethane Selectivity: It selectively drives the isocyanate-polyol (gelation) reaction, rapidly building polymer molecular weight, improving “green strength,” and enabling significantly faster demolding times.
Superior Mechanical Properties: By ensuring a highly dense and complete cross-linking network, it directly improves the final product’s tensile strength, tear resistance, and overall structural resilience.
PVC Heat Stabilization & Silicone Cross-Linking
Beyond polyurethane synthesis, MXC-T12 holds massive commercial value and versatility in the vinyl and silicone manufacturing sectors:
Advanced PVC Heat Stabilizer: It effectively scavenges destructive hydrochloric acid (HCl) released during PVC thermal processing. This halts the degradation process, preventing discoloration and preserving the optical transparency of soft and semi-soft PVC products.
Silicone Cross-Linking Agent: It acts as a highly efficient catalyst for the room temperature vulcanization (RTV) of silicone rubbers, promoting rapid moisture-curing and cross-linking for caulks, sealants, and silane-modified polymers.
Process Efficiency & Formulation Stability
We maintain rigorous quality control parameters to ensure predictable performance and seamless integration into your automated factory lines:
Precision Tin Content: Carefully controlled at 18.0%-19.0%, it guarantees highly consistent catalytic strength across different production batches, minimizing formulation adjustments.
Strict Moisture Control: A maximum water content of just 0.5% prevents parasitic side reactions (such as premature urea formation) and protects the chemical integrity of your isocyanate prepolymers.
High Optical Clarity: Supplied as a light yellow oily liquid with a low color index (Max. 100 Pt-Co), it maintains the aesthetic quality and visual transparency of your clear coatings and transparent PVC films.
