• saccharin
  • In 1974, the National Academy of Sciences published a scientific review emphasizing saccharin could not be identified as the carcinogenic agent of benign tumors and malignant tumors due to equivocal analysis procedures, inadequate scientific experimental design, and potential impurities. (wikipedia.org)
  • form
  • b) subsequently introducing to said composition comprising silica gel particles a sufficient amount of an alkali silicate and an acidulating agent to form a precipitated silica, thereby producing a gel/precipitate silica composite, wherein the pH of the overall reaction is within the range of from 3 to 10. (google.com)