The presence of the triple bond in 1-butyne makes it a focal point for several chemical reactions. It undergoes typical alkyne reactions such as hydrogenation, addition reactions with halogens, and reactions with strong bases. For instance, when 1-butyne reacts with hydrogen in the presence of a catalyst, it can be converted into butane or butene, showcasing its potential for various synthetic pathways.

Here are some of the ingredients Rosales is asked about most often, and a few others that often prompt Google searches of Is it safe? This is by no means an exhaustive list, as the FDA regulates thousands of chemicals the agency recognizes as safe for use in food in varying amounts.

E491 is considered safe for consumption and is approved for use by several regulatory authorities, including the European Food Safety Authority (EFSA) and the U.S. Food and Drug Administration (FDA). It is classified as Generally Recognized As Safe (GRAS), meaning it does not pose any significant risk when consumed within recommended limits.

Direct food additives are substances that are intentionally added to food for specific purposes. These additives are meant to modify the food's characteristics or improve its quality. Common examples include preservatives, flavor enhancers, colorants, and emulsifiers. Preservatives, such as sodium benzoate, are used to prolong shelf life by inhibiting the growth of harmful bacteria and mold. Flavor enhancers like monosodium glutamate (MSG) boost the overall taste of food, making it more appealing to consumers.