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Does chalk reflect light in the sun? Is it poisonous? Can it be eaten?

2026-09-18 20:42
2026-09-18 23:44

Talc powder had good luster physical properties, but no information was found on whether it reflected light under the sun. There was no sufficient human or animal data to prove that pure Talc powder could cause cancer, but Talc was a secondary mineral and could be mixed with different amounts of a class of cancer-causing substances, namely Asbestos. Talc powder was irritating to human eyes. Direct contact would cause redness and pain in the eyes. Inhaling it into the lungs through the respiratory tract and long-term exposure to Talc powder during production would cause Talc pneumoniosis. Food-grade Talc Powder could be used as an ingredient in the pharmaceutical and food industries. It was non-toxic, tasteless, soft in taste, and smooth. It could be eaten, but there were relevant standards for Talc Powder in different fields. For example, in the field of food, the Standard for the Use of Food Agents (GB2760 - 2014) stipulated that the use of chalk powder as a mold release agent and anti-sticking agent was limited to the processing technology and fermentation extraction process of candy. It was allowed to be used in preserved fruits and chemical foods, and the maximum usage was 20.0g/kg. Read more exciting novels for free

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