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Toluene is widely used in the paint, dye, rubber, chemical, glue, printing, and pharmaceutical industries as a solvent. [38] Nail polish, paintbrush cleaners, and stain removers may contain toluene. Manufacturing of explosives (TNT) uses it as well. Toluene is also found in cigarette smoke and car exhaust.
The dye can also be added to rainwater in environmental testing simulations to aid in locating and analyzing any water leaks, and in Australia and New Zealand as a methylated spirit dye. As fluorescein solution changes its color depending on concentration, [ 26 ] it has been used as a tracer in evaporation experiments.
“The potential issue with food additives like red dye No. 3 is their association with health concerns, including potential links to hyperactivity in children,” says Daniel Ganjian, M.D., a ...
Like any other food dye, natural food coloring comes in two forms: liquid or powdered. It’s all a matter of which ingredient you’re using to make the dye. It’s all a matter of which ...
Artificial food dye is an additive used to color a product. “The dye is artificial if it originates from a nonfood source,” explains Jamie Alan, PhD , an associate professor of pharmacology ...
The odor detection threshold is the lowest concentration of a certain odor compound that is perceivable by the human sense of smell. The threshold of a chemical compound is determined in part by its shape, polarity, partial charges, and molecular mass. The olfactory mechanisms responsible for a compound's different detection threshold is not ...
Scientists have used a food coloring dye used in Doritos and other products to create mice with see-through skin, a low-cost way to assess the body's internal operations.
Like other types of phenols, they are slowly oxidized by exposure to air, and the resulting impurities often give the samples a yellow to brownish red tint. Cresols have an odor characteristic to that of other simple phenols, reminiscent to some of a " coal tar " smell.