Zinc Stannate

Catalog	ACM12036372
CAS	12036-37-2
Structure
Description	Zinc Hydroxystannate and Zinc Stannate are active smoke suppressants as well as flameretardants. Their superior performance is because of their dual phase mechanism. In addition to exhibiting vapor phase action, similar to Antimony Trioxide, they also exhibit condensed phase action during which they act as excellent char promoters. The condensed phase action of Zinc Hydroxystannate and Zinc Stannate enhances the formation of a thermally stable carbonaceous layer at the expense of aromatic, volatile and flammable products. These products exhibit synergy with Zinc Borate, Ammonium Octamolybdate and Antimony Trioxide.
Synonyms	ZnSnO3
Molecular Weight	232.06
Molecular Formula	ZnSnO3
Density	g/cm³
Appearance	White powder
Application	Zinc Hydroxystannate and Zinc Stannate are effective in halogen free and halogen containing systems. Although generally, there is little difference in the effectiveness of Zinc Hydroxystannate and Zinc Stannate, the latter is the preferred additive for polymers that are processed at temperatures above 200oC.
Bulk Density	0.8 gm/cm³
Content	Tin 51-52 % Zinc 28-29 %
Decomposition Temperature	400 °C
Loss On Ignition	0.02
Moisture Content	0.005
Particle Size	10 µm (D90); Median Particle Size, 1 µm(D50)
pH	10 (5% aqueous slurry)
RefractiveIndex	1.9
Specific Gravity	3.3
Specific Surface Area	7 cm²/gm

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