How many tablespoons of caustic soda is 100 grams

The instructions on the container of caustic soda reads that 100 grams of it should be solved in 1 litter of water. But I don't have a scale to measure 100 grams.

100gr(1 tablespoon/15.0015 grams)=6.666 tablespoon

aprox. 6 and 2/3 tablespoons