Dibutyltin Oxide

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

appearance photo of Dibutyltin oxide CAS 818-08-6 Polyurethane catalyst

Dibutyltin Oxide, also abbreviated as DBTO, is a typical organotin compound widely recognized as a high-performance polyurethane catalyst in the global chemical industry. It accelerates the crosslinking reaction between isocyanate and hydroxyl groups, significantly boosting curing speed and improving the mechanical performance of polyurethane finished goods.
Unlike common amine catalysts, dibutyltin oxide delivers balanced catalytic activity with less side reaction risk, making it ideal for medium-to-high temperature polyurethane production lines. Our factory independently develops and manufactures DBTO with strict purification procedures, eliminating unstable impurities that cause yellowing or uneven curing during PU processing.
We focus on eco-friendly production routes for organotin catalysts, continuously optimizing synthesis workflows to lower pollutant emissions while maintaining consistent batch-to-batch product uniformity for overseas industrial buyers.

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

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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

As a universal polyurethane catalyst, dibutyltin oxide serves multiple downstream manufacturing sectors worldwide:
  1. 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.

  2. 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.

  3. Polyurethane Elastomers & Cast PU

    Perfect for casting polyurethane parts, industrial rollers, seals and wear-resistant elastomer products, shortening curing time and boosting tensile strength.

  4. 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.

  5. 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

Manufacturing photo of Dibutyltin oxide CAS 818-08-6 Polyurethane catalyst from China

We are a specialized chemical manufacturer focusing on R&D and mass production of polyurethane organotin catalysts including dibutyltin oxide, with complete independent production and testing facilities.
  1. Factory Scale: Covers a total area of 100 acres with standardized closed chemical production workshops and independent waste treatment workshops.
  2. Production Team: 150 full-time factory workers responsible for raw material feeding, synthesis, purification, packaging and quality inspection workflows.
  3. Technical R&D Team: 30 professional engineers and chemical technicians dedicated to catalyst formulation optimization and green process research.
  4. 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:
    1. Green low-emission synthesis processes of dibutyltin oxide and other organotin catalysts;
    2. Purification technology to lift finished product purity and long-term storage stability;
    3. Full-cycle treatment and resource recovery of production wastewater and solid waste residues.
  5. 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.
  6. 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?

A1: Dibutyltin oxide is a tin-based polyurethane catalyst that speeds up the reaction between polyol and isocyanate. It improves crosslink density, shortens curing time and upgrades the physical properties of final polyurethane products such as hardness, wear resistance and dimensional stability.

Q2: Can dibutyltin oxide be mixed with amine catalysts?

A2: Yes. Many PU formulations combine DBTO with tertiary amine catalysts to balance foaming rate and curing speed. Our technical team can provide mixing proportion suggestions based on your specific product formula.

Q3: What packaging options do you offer for dibutyltin oxide?

A3: Standard packages include 25kg plastic-lined iron drums, 200kg iron drums and 1000L IBC tanks. Small 1–5kg trial sample packaging is available for formulation testing before bulk orders.

Q4: Is your dibutyltin oxide compliant with international environmental export regulations?

A4: Our factory adopts self-developed wastewater and solid waste recycling technology. All batches come with complete MSDS, COA quality certificates, meeting EU, Southeast Asia and US chemical import environmental standards.

Q5: Do you provide technical after-sales support for PU formulation adjustment?

A5: Our 30-person professional technical team offers free one-on-one formulation guidance. We can adjust DBTO specifications and recommend optimal dosage according to your production equipment, processing temperature and target finished product performance.

Q6: How long is the delivery lead time for bulk dibutyltin oxide orders?

A6: We maintain sufficient raw material inventory for continuous DBTO production. Conventional bulk orders can be delivered within 7–15 working days after receiving the deposit, depending on destination port logistics schedules.

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.

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