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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