Potassium Sodium Tartrate "Rochelle Salt" / 4 Ounces / 99.9% Pure / USP Food Grade / SHIPS FAST FROM USA TOTAL WEIGHT OF PRODUCT: 4 Ounces NUMBER OF BOTTLE(S): 1 Plastic Bottle TEXTURE: Fine Powder GRADE: 99.9% Pure USP Food Grade CAS #: 6381-59-5