Diurium bromide can be used in pharmaceutical and chemical fields. If you inhale bromonium, please move the patient to fresh air; In case of skin contact, take off the contaminated clothes, wash the skin thoroughly with soap water and clean water, and seek medical advice in case of discomfort; In case of eye contact, separate the eyelids, wash with flowing clean water or normal saline, and seek medical advice immediately; If ingested, rinse your mouth immediately, do not induce vomiting, and seek medical advice immediately. Surfactant indicator, measuring anion and cation by titration reaction, brown red. The daily chemical washing industry uses acid blue in a ratio of 2:1. Titrate sulfonic acid ions. Used as a probe for insertion into nucleic acids. A probe inserted into nucleic acid.