Polypropylene and polyurethane are both polymers widely used in various applications due to their durability and resistance to chemicals. When it comes to pictures, polypropylene is often used in photo albums and storage because it does not react with the photographs, making it safe for long-term storage. Polyurethane, however, is commonly used in varnishes and coatings, and its suitability for pictures depends on the formulation. Some polyurethane coatings can offer excellent protection against UV light, scratches, and moisture, potentially enhancing the longevity of a picture. However, if the polyurethane is not acid-free, it could potentially cause yellowing or deterioration over time. Hence, it is crucial to choose archival-quality, acid-free polyurethane when used for conservation or display purposes to ensure it does not negatively impact the photographs.

Titanium dioxide is a frequently utilized food coloring for achieving a white color in baked goods. When making Swiss meringue buttercream. prepare the cream as usual and then incorporate a desired amount of titanium dioxide. Use caution and add only a small quantity. typically starting with 1/4 teaspoon for larger batches. Thoroughly mix the powder into the cream to evenly disperse the color. It is important to use food grade titanium dioxide and be aware that its use as a food additive may be disputed or limited in certain regions.

The melting point of titanium is approximately 1668 degrees Celsius 3034.4 degrees Fahrenheit.