Overview
Pyrocatechol, commonly known as catechol, is an organic compound belonging to the phenol family. It is a white crystalline solid with a slight phenolic odor. Catechol is naturally found in some plants and is also produced synthetically for industrial use. Its two hydroxyl groups make it a versatile intermediate in various chemical reactions. Catechol is widely used in the pharmaceutical industry as a precursor for drugs like epinephrine and L-DOPA. It also serves as a reducing agent and antioxidant in several applications. Due to its reactive nature, catechol must be handled with care to avoid exposure to skin and eyes.
Physical and Chemical Properties
Pyrocatechol has a molecular weight of 110.11 g/mol and a density of 1.34 g/cm³. It melts at 105-107°C and boils at 245-246°C. The compound is soluble in water, ethanol, and ether, making it suitable for various solvent-based applications. Catechol exhibits strong reducing properties and can act as a chelating agent for metal ions. It is sensitive to oxidation and should be stored away from strong oxidizers. The compound's reactivity is primarily due to the presence of two hydroxyl groups on the benzene ring, which facilitate its participation in numerous chemical reactions.
Main Applications
Catechol is a key ingredient in the synthesis of pharmaceuticals, including epinephrine and L-DOPA, which are used to treat conditions like asthma and Parkinson's disease. It is also employed in the production of dyes, perfumes, and photographic developers. In the chemical industry, catechol serves as a reducing agent and antioxidant. It is used in the manufacture of agrochemicals, rubber antioxidants, and corrosion inhibitors. Its chelating properties make it valuable in water treatment processes to remove metal ions.
Safety and Storage
Pyrocatechol is harmful if swallowed or inhaled and can cause skin and eye irritation. Proper personal protective equipment (PPE), such as gloves and goggles, should be worn when handling the compound. Adequate ventilation is essential to avoid inhalation of dust or vapors. Catechol should be stored in a cool, dry place away from strong oxidizers and direct sunlight. Containers must be tightly sealed to prevent moisture absorption and oxidation. Spills should be cleaned up immediately using appropriate absorbent materials.
B2B Procurement Guide
When procuring pyrocatechol, buyers should prioritize suppliers with certifications such as ISO or GMP to ensure product quality. Key factors to consider include purity levels (typically 98-99%), packaging options (e.g., 25 kg bags or bulk containers), and lead times. It is advisable to request material safety data sheets (MSDS) and certificates of analysis (CoA) from suppliers. Comparing prices from multiple vendors can help secure competitive rates. Buyers should also consider logistics and storage requirements to maintain product integrity during transit and storage.
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