Spill Magic is classified as an “amorphous silicate”.
It is not carcinogenic, and does not cause “silicosis”, a lung disease. These findings are the result of studies conducted by the IARC (International Agency for the Research of Cancer), an arm of WHO (World Health Organization). The IARC lists evidence for the carcinogenicity of “amorphous” silicate in Monogram-42 as “inadequate”.
(International Agency for the Research of Cancer) Reprint from IARC monograms on the evaluation of the carcinogenic risks to humans. Overall evaluations of carcinogencity: An updating of IARC monograms volumes 1 to 42
Silica: Crystalline Silicate (group 2A) Amorphous Silicate (group 3)
A. Evidence for carcinogencity to humans (limited for crystalline silicate; inadequate for amorphous silicate).
Excerpt from IARC Monogram-42 on the evaluation of the carcinogenic risk of chemicals to humans
4.4 Evaluation There is sufficient evidence for the carcinogenicity of crystalline silica to experimental animals. There is limited evidence for the carcinogencity of crystalline silica to humans. There is inadequate evidence for the carcinogencity of amorphous silica to experimental animals. There is inadequate evidence for the carcinogencity of amorphous silica to humans.