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A few non-dietary studies have reported adverse effects in the gastrointestinal tract of laboratory animals given food-grade TiO2. However, these same effects were not seen when the same or higher doses of food-grade TiO2 were administered in the animals' diet. Dietary studies best reflect how humans are exposed to TiO2 from food. Thus, the Food Directorate placed the most emphasis on the results of these studies in the state of the science report.

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The raw material used in this method is FeSO4. In order to maintain the Fe3 + concentration in the reaction medium in a specific range, reducing agent iron sheet is added in the reaction process. Iron yellow crystal seed was added and air was introduced to synthesize iron yellow under certain pH conditions. The method mainly includes two steps: (1) firstly, FeSO4 · 7H2O is used as raw material, NaOH or NH3 · H2O is used as precipitant or pH regulator, and air is used as oxidant to prepare crystal seed; (2) Iron yellow is produced by two-step oxidation with crystal seed, FeSO4, iron sheet and air.

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  • In the world of DIY projects and home repairs, few products have gained as much notoriety and acclaim as Flex Tape. Marketed as a super-strong adhesive tape that can seal, bond, and repair virtually anything, Flex Tape truly lives up to its reputation. In this article, we will take a closer look at Flex Tape, focusing on the white variant in 4-inch by 5-foot dimensions, exploring its uses, benefits, and overall effectiveness.


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  • Self-Fusing Silicone Repair Tape: What You Need to Know!

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