Red phosphorus is known to be harmless, odorless, and chemically active, but not significantly.
It has a deep red color which is not phosphorescent like white phosphorus.
Red phosphorus is also used in Semiconductors, fertilizers, pyrotechnics, safety matches, smoke bombs, pesticides, incendiary shells in organic synthesis reactions, and even certain flame retardants.
Methamphetamine, an illegal drug, is made with red phosphorus, and to make hydric acid, red phosphorus is also combined with iodine in the procedure.
However, red phosphorus is illegal to import, export, purchase, or sell iodine crystals in the United States if they are used or intended to be used in the production of methamphetamine which is known as an illegal drug.