Tribasic Lead Sulphate (TBLS)


Tribasic Lead Sulphate is universally accepted as an excellent stabilizer for PVC processing involving high temperatures and performance in rigid extrusion, electrical insulation, calendering and spreading. It gives excellent weather resistance when used for outdoor water pipes, conduits, rain water down pipes, drainage pipes and profiles used in building industry.

Because of its high electrical resistance property, it is extensively used in wire and cable industry. It is used along with Lead Stearate and Dibasic Lead Stearate to obtain optimum lubricating properties and desired finish to the end product. It is also used in combination with other lead stabilizers like Dibasic Lead Phoshite for achieving better light and heat stability for specific applications. It is also used as stabilizer in extruded, calandered & moulded PVC products.



Tribasic Lead Sulphate Chemical For PVC Pipe

Technical Specification

Chemical Formula 3PbO.PbSO4.H2O
Appearance White Powder
Molecular Weight 990.74
Specific Gravity 6.0
Moisture , % 1.0 Max.
Melting Point 900 Deg. C
Particle Size -200 Mesh
Lead Content(as PbO ) 89%
Purity , % 99.6 Minimum
Heat Loss .02%
Free Fatty Acid , % Not Applicable
Packing Polylined HDPE bags of 50 Kgs. Nett.
Suggested Application
  • As stabilizer in extruded, calandered & moulded PVC products
  • Used in PVC cables