Zinc fluoride tetrahydrate

Zinc Fluoride Tetrahydrate. Zinc fluoride tetrahydrate [13986-18-0] is prepared by reaction of ZnO and aqueous HF. ZnF2 4H20 has a water solubihty of about 1.6 g/100 mL solution at 25°C. Addition of HF increases the solubihty to 11.8 g/100 mL in a 29% HF solution. The tetrahydrate loses water at temperatures above 75°C. 

ZnF2H804 zinc fluoride tetrahydrate 13986-18-0 25 00 2.3000 1 5146 ZrH404 zirconium hydroxide 14475-63-9 25.00 3.2500 1... 

Zinc fluoride tetrahydrate Znp2 4H2O 13986-18-0 175.46 wh orth cry 2.30 1.552s ... 

Bridgehead fluoroadamantanes. 1-Bromoadamantane is converted by anhydrous zinc fluoride in refluxing cyclohexane into 1-fluoroadamantane in 61% yield. However, the yield is sensitive to the heat treatment required to obtain anhydrous salt from the tetrahydrate and the reaction becomes increasingly slow as the number of bridgehead bromine atoms is increased. In this case the more expensive silver fluoride is used. Even 1,3,5,7-tetrabromoadamantane can be... 

Elemental composition Zn 63.24%, F 36.76%. ZnF2 may be characterized from its x-ray and other physical properties. The water of crystaUization in the tetrahydrate may be determined by thermogravimetric method. A small amount of compound is dissolved in water (anhydrous salt is very slightly soluble in water) and analyzed for fluoride ion by the electrode method or by ion chromatography. A diluted acid solution of the compound is analyzed for zinc by various instrumental methods (See Zinc). 

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