Sodium acid phosphate is a whitish salt which has granular or powder like physical form. In addition to food industry, this compound is highly beneficial in medical sector as well. It works as a medicine and used in bowel formation for colonoscopy. Sodium acid phosphate, having PH value 3.5-4.5 cleans the colons of your body. This salt helps the doctor see the inside of the colon noticeably during the colonoscopy. It is hydroscopic in nature.