what is the ph of toothpaste?
Is KNO3 an acid or a base? The average pH level of nine toothpastes tested was 6.83 (slightly acidic). They had a range of pH levels, from 4.22 (acidic) to 8.35 (slightly alkaline or basic). Seven of these measured within one point of neutral (a level of seven). Toothpastes containing fluoride, sodium lauryl sulfate, sugar and harsh abrasives are more acidic than those without these ingredients.