Q
is iron oxide on pottery food safe
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Iron oxide is commonly used in pottery glazes and underglazes for its rich colors, ranging from reds and yellows to browns and blacks. When properly applied and fired, iron oxide becomes an integral part of the ceramic surface, presenting no health hazard. In context, iron is a metallic element that is also an essential nutrient for the human body. However, the safety of iron oxide on pottery, especially for food use, depends significantly on whether the glaze has been correctly formulated and fired to maturity, ensuring it is stable and does not leach chemicals. Pottery intended for food use should always be tested for leachability to meet health standards. It’s also essential to note that while iron oxide itself is not toxic, the safety of pottery for food use can also depend on the other materials used in the glaze, which should be food safe.
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