Overview
4-Bromo-3-methylphenol is a brominated derivative of phenol, featuring a methyl group at the 3-position and a bromine atom at the 4-position of the aromatic ring. It is primarily used as an intermediate in the synthesis of more complex organic compounds, including pharmaceuticals and agrochemicals. The compound exhibits moderate stability under standard conditions but requires careful handling due to its reactive bromine substituent. In industrial settings, 4-bromo-3-methylphenol is valued for its role in producing active pharmaceutical ingredients (APIs) and specialty chemicals. Its molecular structure allows for further functionalization, making it a versatile building block in organic chemistry.
Physical and Chemical Properties
4-Bromo-3-methylphenol appears as a white to light yellow crystalline powder with a characteristic phenolic odor. It has a melting point range of 60-64°C and is soluble in common organic solvents such as ethanol, methanol, and diethyl ether. Its solubility in water is limited due to the hydrophobic nature of the aromatic ring and bromine substituent. The compound's bromine atom makes it susceptible to nucleophilic substitution reactions, which are exploited in synthetic applications. It also exhibits weak acidity (pKa ~9-10) typical of phenols, allowing for salt formation under basic conditions. Stability concerns include sensitivity to prolonged exposure to light and oxidizing agents.
Main Applications
The primary use of 4-bromo-3-methylphenol is as a chemical intermediate in pharmaceutical manufacturing, particularly in the synthesis of antimicrobial agents and other bioactive molecules. It serves as a precursor in the production of fungicides and herbicides for agricultural applications. In research and development, this compound is employed in organic synthesis to introduce bromophenol moieties into larger molecular frameworks. Some specialty polymer applications utilize derivatives of 4-bromo-3-methylphenol as flame retardant additives or cross-linking agents.
Safety and Storage
4-Bromo-3-methylphenol requires careful handling as it can cause skin irritation, eye damage, and respiratory tract irritation upon exposure. Appropriate personal protective equipment (PPE) including gloves, goggles, and respiratory protection should be used when handling this chemical. Storage should be in tightly sealed containers made of glass or compatible plastics, kept in a cool, dry, well-ventilated area away from oxidizing agents and strong bases. The compound should be protected from light to prevent decomposition. Spills should be contained immediately using inert absorbent materials.
B2B Procurement Guide
When procuring 4-bromo-3-methylphenol, industrial buyers should prioritize suppliers who can provide comprehensive technical data sheets (TDS) and material safety data sheets (MSDS). Key specifications to verify include purity (typically ≥98%), moisture content, and heavy metal impurities. Bulk purchases (25kg drums or larger) generally offer better pricing, but smaller quantities (100g to 1kg) are available for R&D purposes. Lead times can vary from 2-6 weeks depending on supplier inventory. Consider requesting samples for quality testing before large orders, especially when switching suppliers.
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