Can i use Sulfur Plus Ast Soil Conditioner for black powder?

is Sulfur Plus Ast Soil Conditioner pure sulfur if not what does it contain?Can i use Sulfur Plus Ast Soil Conditioner for black powder?
Unless you can verify that it is 100% sulfur don't use it! Rubber Makers sulfur is the best for black powder, it has a low acidity level. You can get it at Skylighter.com: http://www.skylighter.com/mall/chemicals鈥?/a>Can i use Sulfur Plus Ast Soil Conditioner for black powder?
Don't