In case anybody is interested I have worked out the accurate conversion between anhydrous sodium carbonate (powder) And sodium carbonate decahydrate (crystals).
(Mass in g of anhydrous sodium carbonate / 106) x 286 = mass in g of sodium carbonate decahydrate
For example is the recipe calls for 54g of anhydrous sodium carbonate, 146g of sodium carbonate decahydrate is the equivalent.
(Mass in g of anhydrous sodium carbonate / 106) x 286 = mass in g of sodium carbonate decahydrate
For example is the recipe calls for 54g of anhydrous sodium carbonate, 146g of sodium carbonate decahydrate is the equivalent.