: Essential for traditional photographic processes, including the production of film and paper.

: Used as a reagent for starch testing and as a catalyst in organic synthesis.

: Purchasing larger quantities (e.g., exceeding 100g from some vendors) typically requires the buyer to submit a government-issued ID.

: High-purity iodine solutions are used to maintain reef inhabitants and corals in marine aquariums. Safety and Handling Precautions

Pure iodine is distinct from common consumer products like iodized salt or low-concentration tinctures. Its primary "pure" applications include:

: Stricter local limits may apply; for example, some vendors limit California residents to 100g per year regardless of general federal limits. Common Applications

: Federal law limits the quantity an individual can purchase. Some suppliers restrict sales to as little as 1 ounce per year per customer.