What Are The Substances That Need To Be Packed in Brown Reagent Bottles?

Substances to be stored in brown reagent bottles such as: iodine, silver nitrate, silver bromide, concentrated nitric acid, dilute nitric acid, chlorine water, bromine water, iodine water, silver ammonia solution, etc. The function of the brown reagent bottle is to keep away from light, and it is generally easy to decompose, volatilize, sublime or react when exposed to light.

1. Iodine

Iodine, the 53rd element of the periodic table, is one of the halogen elements in Group VIIA of the 5th periodic system in the periodic table of elements. Elemental iodine was first discovered by French pharmacist Courtois in 1811. Elemental iodine is purple-black crystal, easy to sublime, and easy to sublime after sublimation. Toxic and corrosive. When iodine meets starch, it will turn blue-purple.

Mainly used in the preparation of drugs, dyes, iodine, test strips and iodine compounds. Iodine is one of the essential trace elements for the human body. The total amount of iodine in a healthy adult is 30 mg (20-50 mg), and the national standard for adding iodine to table salt is 20-30 mg/kg.

2. Silver Nitrate

Silver nitrate is a colorless crystal that is easily soluble in water. Pure silver nitrate is stable to light, but its aqueous solution and solid are often stored in brown reagent bottles due to insufficient purity of the general product.

It is used in photographic emulsions, silver plating, mirror making, printing, medicine, hair dyeing, testing chloride ions, bromide ions and iodine ions, etc. It is also used in the electronics industry.