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  • Hydrolytic Tin

Hydrolytic Tin

  • MOFAN Grade:: MOFAN T-120
  • Competitor Brand:: ® T-120
  • Chemical name:: DI-N-BUTYLBIS(DODECYLTHIO)TIN
  • Cas number:: 1185-81-5

    • Product Detail

    Product Tags

    Description

    MOFAN T-120 has higher catalytic activity than dibutyl tin dilaurate (T-12) and exhibits excellent hydrolytic stability. It is suitable for systems such as polyurethane rigid foam, microporous elastomers, coatings, adhesives, and sealants. It can be used alone or in combination with amine catalysts to adjust the balance between foaming and gelation.

    Application

    Used as a strong gel catalyst for polyurethane foams, elastomers, coatings, adhesives and sealants.
    Used as a heat stabilizer for PVC processing.
    Used as an intermediate for organotin chemicals and polymer modification.

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    Typical Properties

    Appearance Yellow to Colorless liquid
    Tin content (Sn), % 18-19
    Density g/cm3 @25℃ 0.986-1.034

    Commercial specification

    Tin content (Sn), % 18-19

    Package

    25kg/drum or according to customer needs.

    Hazard statements

    H312 Harmful in contact with skin
    H315 Causes skin irritation
    H317 May cause an allergic skin reaction
    H341 Suspected of causing genetic defects
    H360 May damage fertility or the unborn child
    H372 Causes damage to organs through prolonged or repeated exposure
    H410 Very toxic to aquatic life with long lasting effects

    Label elements

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     Pictograms

    Signal word  Danger

    Not regulated as dangerous goods.

    Handling and storage

    Precautions for safe handling
    Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
    Conditions for safe storage, including any incompatibilities
    Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

    FAQ

    I produce polyurethane microcellular elastomers (shoe soles, integral skin). Why is T-120 preferred over T-12?

    T-120 is a hydrolytically stable tin catalyst, giving better control over foaming and less sensitivity to moisture.

    My rigid closed-cell spray foam has inconsistent cell structure. Can T-120 stabilize it?

    Yes, its moderate activity and good water tolerance produce uniform fine cells; use 0.2–0.4 phr.

    What is the advantage of T-120 for polyurethane shoe sole systems?

    It provides a balanced rise and gel profile, reducing surface bubbles and improving demold (2–3 min at 50°C).

    Does T-120 cause any staining on light-colored elastomers?

    Less than tin octoate; but still may cause slight yellowing; use the minimum effective level.

    My high-density rigid foam for flotation devices has poor compressive strength. How to improve with T-120?

    Increase to 0.3–0.5 phr to raise crosslinking density; adjust isocyanate index accordingly.

    Can T-120 be used in water-blown rigid foam systems?

    Yes, it is more water-tolerant than DBTDL; typical dosage 0.15–0.3 phr.

    What is the shelf life of MOFAN T-120 in an opened drum?

    About 6 months if kept sealed and dry; it is less hygroscopic than T-9.

    My polyurethane elastomer has poor hydrolysis resistance. Can T-120 help?

    No, it does not improve hydrolytic stability; use a polycarbodiimide instead.

    Is T-120 suitable for RIM (reaction injection molding) of automotive panels?

    Yes, it gives fast cure and good release; typical level 0.1–0.2 phr.

    How does T-120 compare to T-120?

    Equivalent product; direct replacement.

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