Buy 4-Hydroxy-3-methylbenzoic acid CAS 499-76-3 (3-Methyl-4-hydroxybenzoic acid) from TNJ Chemical, China leading 4-Hydroxy-3-methylbenzoic acid suppliers, factory & manufacturers. If you want to buy 4-Hydroxy-3-methylbenzoic acid, please mail to [email protected]
4-Hydroxy-3-methylbenzoic acid CAS 499-76-3 is derived from o-cresol by acid methylation. Add o-cresol and 50% sodium hydroxide aqueous solution to the reaction kettle. After treatment with steam, press in carbon dioxide at 160 ° C or lower to obtain crude o-cresol sodium p-formate, which is then neutralized with sulfuric acid and refined. The finished product was obtained by vacuum drying with a yield of 88%.
Appearance Needle crystals
Molecular weight 152.15
Melting point 173-177 °C
Used as Azo dye intermediate.
(1) Stored in a cool and dry well-closed container and in ventilated area.
(2) kept away from moisture and strong light or high temperature.