Flamtard T (calcium hydroxystannate) flame retardant synergist is a non-zinc containing stannate that provides tin-based chemical functionality and is ideal for applications where zinc ions are not permitted or desired. It is insoluble in water and thermally stable (no weight loss) up to 220 °C. At higher temperatures (400 °C - 600 °C) calcium and tin ions can be volatilised or liberated from their structure to exert catalytic activity. 

 

 


Chemical name Calcium Hydroxystannate Chemical formula CaSnO3.3H2O or CaSn(OH)6
Molecular weight 260.83 C.A.S. number TBC

Applications

William Blythe’s Flamtard T (calcium hydroxystannate) is ideal for use in applications such as:

Coating Additives

  • Smoke suppressant and flame retardant synergist for flame retardant paints.

Polymer Additives

  • Smoke suppressant and flame retardant synergist with co-flame retardants. For polymer processing at temperatures below 220 °C.
  • Co-additive in phosphate flame retardant containing polymer formulations to optimise char formation.


Product forms

William Blythe’s Flamtard T (calcium hydroxystannate) is available as a powder in both standard and free-flowing grades.

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