Chemistry enthusiasts and professionals are always on the lookout for compounds that can serve numerous purposes. One such compound that has gained attention in recent years is pyrogallol. It is an organic compound with the chemical formula C6H3(OH)3, and its molecular weight is 126.11 g/mol. Pyrogallol is commonly known as 1,2,3-trihydroxybenzene.
Properties of Pyrogallol
Pyrogallol is a white to light brown crystalline solid that is soluble in water and ethanol. It has a melting point of 132-135°C and a boiling point of 309°C. Pyrogallol is highly reactive and has a strong acidic nature.
Reactions of Pyrogallol
Pyrogallol possesses a wide range of reactivity, which makes it a highly useful compound in various fields. Some of the reactions in which pyrogallol participates are:
Gallate Oxidase Reaction: Pyrogallol can reduce copper ions to cuprous oxide, a reaction that is frequently used to evaluate the activity of the enzyme gallate oxidase.
Photographic Developer: Pyrogallol is a common ingredient in photographic developing solutions. When exposed to light, it can convert itself into its oxidation state, known as pyrogallon. This reaction is the basis for the development of black and white photographs.
Indicator Dye: Pyrogallol can change color in the presence of oxygen, which makes it a popular indicator dye.
Chemical Synthesis: Pyrogallol is also used in the synthesis of other chemicals, such as pharmaceutical intermediates, dyes, and insecticides.
Uses of Pyrogallol
Pyrogallol is an incredibly versatile compound that is used in various fields. Some of the applications of pyrogallol are:
Cosmetics and Personal Care: The antioxidant properties of pyrogallol make it an ideal ingredient in skin-care products to fight the effects of aging.
Photography: As previously mentioned, pyrogallol is an essential component in black and white photographic developing solutions.
Analytical Chemistry: Pyrogallol’s strong reducing properties make it a useful reagent in analytical chemistry for the detection of different molecules such as formaldehyde, oxygen, and sulfur oxides.
Food and Beverage: Pyrogallol is used as an additive in food and beverage manufacturing to prevent spoilage and prolong shelf life.
Medicinal: Pyrogallol has been used in traditional Chinese medicine to treat various ailments, including stomach ulcers, dysentery, and hemorrhage.
FAQs
1) What are the hazards associated with pyrogallol?
Pyrogallol can be hazardous when ingested, inhaled or when it makes contact with skin or eyes. Inhalation of pyrogallol dust can irritate the respiratory system, and prolonged exposure can cause lung damage. Ingestion of pyrogallol can cause severe digestive problems and possibly systemic toxicity. Skin and eye contact can result in irritation, temporary blindness, and skin damage.
2) Where can I buy pyrogallol?
Pyrogallol can be purchased from chemical suppliers or online.
Conclusion
Pyrogallol is a powerful and dynamic compound that has a broad range of applications in various fields. Its multifaceted nature makes it a powerful tool for those involved in research and development. As with any chemical, it is essential to handle pyrogallol with caution and care to prevent harm to oneself or others.