McCormick Cream Of Tartar, 1.5 oz

I tried to beat 7 egg whites with 1/2 teaspoon of this cream of tartar but it won't get stiff at all. Still watery after long time beating. why?

my item arrived and it was completely broken, how can I get a replacement or return of this item?

Is sugar icluded this product

What is the composition of this one: potassium bitartrate, or sodium pyrophosphate?