Unburned Natural gas if untreated, leaking from a sour gas well will turn silver black, and effect some dyes in fabrics. The stuff that comes from your gas company won't do either. Also, when burned the combustion byproducts are water, carbon dioxide, and minor amounts of carbon monoxide. These will not turn any fabric yellow.
Some fabrics will fade over time. Fabrics that have non-natural fibers like acrylic, polyester and nylon are less prone to fading. If you prefer natural fabrics, choose cotton, wool and wool blends which are less likely to fade.
Natural rubber is typically a milky white colour when it is harvested from rubber trees. However, it can also have a yellow tint due to oxidation over time.
Yes, polyurethane can yellow over time due to exposure to light and heat.
Yes, polyurethane can yellow over time due to exposure to light and heat.
Yes, urethane can yellow over time due to exposure to light and air.
Exposure to light can cause colored fabrics to fade over time, reducing their longevity.
Most T-Shirts are made of Cotton, and since Cotton is a Natural Fabric, it is biodegradable. If a T-Shirt is a blend (containing more than one type of fabric), and one of the blended fabrics is NOT Natural, the T-Shirt would ONLY be partially biodegradable (the portions made up of the Natural fabrics). Nylon & Polyester are Fabrics which ARE NOT Natural; therefore NOT Biodegradable. Cotton & Hemp are Fabrics which ARE Natural; therefore they ARE Biodegradable.
Yes, polyurethane can turn yellow over time due to exposure to light and oxygen.
Yes, polycarbonate can yellow over time due to exposure to UV light and certain environmental factors.
Yes, silver can tarnish and turn yellow over time due to exposure to air and certain chemicals.
Yes, oil-based polyurethane can yellow over time due to exposure to light and air.
The Panasonic counter top microwave oven in white, should not yellow over time. Anything white if not cleaned properly does stand the risk of discoloring.