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Polyester Resin Monobutyltin Oxide MBTO Polyurethane Additives CAS 2273-43-0
1. Component
Monobutyltin oxide (MBTO)
Chemical Structure: 
M.F.: C4H10O2Sn
M.W.: 208.8
CAS No.: 2273-43-0
EINECS No.: 218-880-1
2. Properties
| Appearance | White powder |
| Tin Content (wt%) | 56-57% |
| Cl Content (wt%) | ≤1.0 |
| Loss on drying (wt%) | ≤1.0 |
| Di-organotin Content (wt%) | ≤0.3 |
| Tri-organotin Content (wt%) | ≤0.1 |
| Solubility | Insoluble in water and most organic solvents, only soluble in strong base and mineral acid |
3. Characteristics
It is a non-corrosive organotin compound which can be used in the synthesis of saturated polyester in powder coatings, insulating varnishes and coil coatings.
4. Usages
• Saturated polyester resin
• Unsaturated polyester resin
• Polymeric plasticizer
5. Storage
Shelf life: 1 years (Stored in cool and dry places.)
6. Packing
25KGS fibre drum