Sodium fluoride

*Appearance:crystalline granules or powder
*Assay:≥98%
*Sodium carbonate content:≤0.5%
*Silicon dioxide:≤0.5%
*Sulphates(SO42-):≤0.1%
*Degree (HF):≤0.1%
*Insol. in water:≤0.7%
*Water (H2O):≤0.5%