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Structure of 137-51-9
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4-Aminobenzene-1,3-disulfonic acid features a para-amino group flanked by two sulfonic acid functionalities, conferring high water solubility and strong acidity. This combination enables effective use in dye synthesis, ion-exchange resins, and as a building block for functionalized aromatic systems under standard aqueous conditions.
4-Aminobenzene-1,3-disulfonic acid serves as a versatile building block for sulfonated aromatic scaffolds, enabling the synthesis of dyes, pharmaceutical intermediates, and functional materials. Its dual sulfonic acid groups enhance water solubility and facilitate electrophilic substitution reactions, while the primary amine permits conjugation via acylation, diazotization, or coupling. Bench-stable and readily purified by recrystallization, it functions reliably in multi-step syntheses requiring precise functional group handling.
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GHS Pictogram :
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GHS No : GHS05
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Signal Word : Danger
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UN#: 3261
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Class : 8
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Packing Group : Ⅲ
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Hazard Statements : H302-H314
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Precautionary Statements : P260-P264-P280-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P363-P405-P501
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Lot numbers can be found on the outside label of a product: