Vendors of sodium bisulfate include Jones-Hamilton Co., Factory Direct Chemicals and SoapGoods. This chemical is a dry acid available in crystal, powder and granular forms.
Sodium bisulfate has many uses. It lowers the pH level of swimming pools and is an important ingredient in many cleaning products, especially those that remove hard water mineral deposits. It also kills fungi and has antimicrobial properties, according to About.com.
Sodium bisulfate must never be combined with other cleaning chemicals, as dangerous reactions may occur, states Maintex.com.
Sodium bisulfate irritates the skin and eyes, and causes nausea and vomiting when ingested in excessive quantities. However, small amounts appear in certain medicines and nutritional supplements.