
Dibutyltin Oxide
CAS number: 818-08-6
Packing: 25kg per bag
Application: Polyurethane catalyst
Origin: China
Product Introduction
Dibutyltin Oxide
– High Efficiency Polyurethane Organotin Catalyst
Product Overview

Core Technical Specifications of Dibutyltin Oxide
| Item | Standard Technical Index |
|---|---|
| Chemical Name | Dibutyltin Oxide (DBTO) |
| CAS Number | 818-08-6 |
| Molecular Formula | C₈H₁₈OSn |
| Tin Content | ≥ 47.0% |
| Appearance | White or off-white fine powder |
| Moisture Content | ≤ 0.3% |
| Insoluble Matter | ≤ 0.1% |
| Melting Point | 130–140 °C |
| Catalytic Activity | Standard grade for all general PU formulations |
| Shelf Life | 12 months under sealed cool dry storage |
Key Advantages of Our Dibutyltin Oxide Catalyst
- Stable Catalytic Efficiency
Our refined dibutyltin oxide provides steady reaction acceleration without premature gelation, helping manufacturers control production cycles precisely and reduce product reject rates.
- Low Impurity & Anti-Yellowing Performance
Advanced filtration and purification processes remove residual butanol and inorganic tin impurities, effectively avoiding yellow discoloration of transparent polyurethane coatings and elastomers.
- Customizable Grades Available
We support customized tin content and particle size according to customers’ unique PU formulation requirements, matching different production equipment and processing temperatures.
- Green & Sustainable Manufacturing
All DBTO production lines adopt optimized low-waste synthesis technology. We conduct independent research on wastewater and solid waste recycling to meet international environmental export standards for chemical raw materials.
- Factory Direct Wholesale Price
No intermediate distributors. We supply bulk drums, IBC tank packaging and small trial samples for global polyurethane manufacturers, coating factories and composite material enterprises.
Wide Industrial Applications of Dibutyltin Oxide
- Polyurethane Rigid & Flexible Foams
Accelerate foaming and crosslinking to enhance foam density uniformity and dimensional stability for construction insulation, furniture cushion foams and refrigerator thermal foams.
- PU Coatings & Varnishes
Suitable for solvent-based and solvent-free polyurethane topcoats, wood coatings, metal anti-corrosion coatings and floor PU coatings, improving surface hardness and scratch resistance.
- Polyurethane Elastomers & Cast PU
Perfect for casting polyurethane parts, industrial rollers, seals and wear-resistant elastomer products, shortening curing time and boosting tensile strength.
- Adhesives & Sealants
Used in two-component PU adhesives, construction sealants and automotive bonding agents to improve bonding strength and curing efficiency under normal and low-temperature environments.
- Other Organotin Derivative Synthesis
DBTO acts as a key intermediate raw material for producing other organotin stabilizers and auxiliary catalysts for plastic processing.
Our Professional Manufacturing Factory Profile

- Factory Scale: Covers a total area of 100 acres with standardized closed chemical production workshops and independent waste treatment workshops.
- Production Team: 150 full-time factory workers responsible for raw material feeding, synthesis, purification, packaging and quality inspection workflows.
- Technical R&D Team: 30 professional engineers and chemical technicians dedicated to catalyst formulation optimization and green process research.
- Industry Research Cooperation: Long-term strategic partnerships with multiple universities and scientific research institutes. Our joint research projects mainly cover three core directions for polyurethane catalysts:
- Green low-emission synthesis processes of dibutyltin oxide and other organotin catalysts;
- Purification technology to lift finished product purity and long-term storage stability;
- Full-cycle treatment and resource recovery of production wastewater and solid waste residues.
- Quality Control System: Full-process testing from incoming raw materials to finished product delivery, with third-party chemical inspection reports available for export customs clearance.
- Export Experience: We supply dibutyltin oxide to PU manufacturers across Southeast Asia, Europe, North America and the Middle East, familiar with international chemical transport, MSDS and export certification requirements.
Frequently Asked Questions about Dibutyltin Oxide
Q1: What is the main function of dibutyltin oxide in polyurethane production?
Q2: Can dibutyltin oxide be mixed with amine catalysts?
Q3: What packaging options do you offer for dibutyltin oxide?
Q4: Is your dibutyltin oxide compliant with international environmental export regulations?
Q5: Do you provide technical after-sales support for PU formulation adjustment?
Q6: How long is the delivery lead time for bulk dibutyltin oxide orders?
Q7: Are you a trader or manufacturer of dibutyltin oxide?
A7: We are one of the most important manufacturers and exporters of Dibutyltin oxide CAS 818-08-6 Polyurethane catalyst from China.
Contact Us for Bulk Order & Technical Sample
If you are searching for stable, high-purity dibutyltin oxide polyurethane catalyst with factory competitive pricing and professional technical support, feel free to send us your inquiry now.
We offer free lab samples for formulation testing, customized product grades and flexible packaging solutions for global industrial buyers. Our sales and technical team will reply within 24 hours with detailed quotations, COA data sheets and full export document support.

