7782-61-8: An Overview of Iron(III) Nitrate Nonahydrate
7782-61-8 or Iron(III) nitrate nonahydrate is a salt of nitric acid and iron that comes in the form of a white, hygroscopic solid. It can dissolve in water, ethanol, and acetone, but is insoluble in ether and benzene. Its chemical formula is Fe(NO3)3 ⋅ 9H2O.
Physical and Chemical Properties of 7782-61-8
Iron(III) nitrate nonahydrate is a highly reactive compound and can create a violent reaction when mixed with combustible materials. It is a strong oxidizing agent and can cause burns upon contact with skin and eyes. The compound has a melting point of 47°C and a boiling point of 125°C.
Iron(III) nitrate nonahydrate is often used as an oxidizing agent in chemical reactions, as a mordant in dyeing, and as a corrosion inhibitor. It also finds applications in the cosmetic and pharmaceutical industries.
Uses of 7782-61-8 in Cosmetics
Iron(III) nitrate nonahydrate has several cosmetic applications, the most notable of which is its use in hair dyeing products. The compound acts as a mordant and helps to stabilize the color of hair dyes by creating a chemical bond between the dye and the hair shaft. The use of Iron(III) nitrate nonahydrate in hair dyes is regulated by governing bodies like the European Union, which has set maximum allowable concentrations of the compound in these products.
Iron(III) nitrate nonahydrate can also be found in some cosmetic products as a preservative. It can inhibit the growth of bacteria and fungi that can cause spoilage and degradation of the product. However, as with all preservatives, there are concerns about its safety, and it is subject to regulatory oversight.
Uses of 7782-61-8 in Pharmaceuticals
Iron(III) nitrate nonahydrate can also be found in some pharmaceutical products. It is used as an astringent and styptic because of its ability to constrict blood vessels and control bleeding. It is also used as a source of iron in iron supplements.
However, the use of Iron(III) nitrate nonahydrate in pharmaceuticals is limited due to its potential toxicity. The compound can cause burns and irritate the skin and eyes, and excessive exposure can lead to harmful effects on the liver and kidneys.
Conclusion
In conclusion, 7782-61-8 or Iron(III) nitrate nonahydrate is a highly reactive compound with several applications in the chemical, cosmetic, and pharmaceutical industries. Its use in hair dyeing and as a preservative and its ability to control bleeding make it a valuable ingredient in these products. However, its potential toxicity means that its use is heavily regulated, and precautions must be taken to ensure its safe handling and use.