Sodium P-phenolsulfonate Dihydrate丨CAS 10580-19-5

1. Intermediate in Dye and Pigment Synthesis
Sodium P-phenolsulfonate dihydrate丨CAS 10580-19-5 is commonly used as an intermediate in the production of azo dyes and other colorants:
● Coupling Component:
It serves as a coupling agent in diazotization reactions, forming brightly colored azo compounds used in textile dyes, ink formulations, and printing materials.
● Color Stabilizer:
The sulfonate group improves solubility and binding to fabrics, enhancing dye fastness and performance.
2. Pharmaceutical and Agrochemical Intermediate
● It is utilized in the synthesis of drug intermediates and certain bioactive molecules, including antimicrobial agents, analgesics, and herbicides, where the phenolic sulfonate moiety improves water solubility and biocompatibility.
3. Corrosion Inhibition and Metal Treatment
● Corrosion Inhibitor:
Sodium P-phenolsulfonate dihydrate丨CAS 10580-19-5 is employed as a corrosion inhibitor for metals, particularly in aqueous environments like boilers and cooling systems. It forms protective films on metal surfaces to prevent oxidation.
● Electroplating Additive:
In electroplating baths, it enhances metal adhesion and deposit quality, especially for copper and nickel plating.
4. Analytical Chemistry
● Used as a standard or reagent in colorimetric and titration-based assays, particularly those involving phenolic or sulfonated groups.
● It may also function as a buffering agent or a reaction medium modifier in certain analytical applications.
5. Surfactant and Dispersant
● The compound's hydrophilic sulfonate and hydrophobic phenyl structure makes it useful as a dispersing agent in formulations involving pigments, resins, or pharmaceuticals, improving homogeneity and stability.

1. Excellent Water Solubility
● The sodium sulfonate group allows for high solubility in water, making it suitable for aqueous-phase reactions and formulations.
2. Reactivity and Versatility
● The activated phenolic ring is highly reactive in electrophilic substitution reactions, facilitating the synthesis of a wide range of dye, pharmaceutical, and industrial compounds.
3. Enhanced Processability
● As a disodium salt hydrate, it is stable and easy to handle, making it preferred in industrial-scale manufacturing.
4. Environmentally Safer Profile
● Compared to some other sulfonated aromatic compounds, sodium p-phenolsulfonate generally has lower toxicity and biodegradability, making it more compliant with environmental standards.
5. Compatibility with Aqueous and Organic Systems
● This dual solubility makes it highly adaptable for formulation scientists, chemists, and industrial engineers working across different chemical environments.

Conclusion
Sodium P-phenolsulfonate dihydrate丨CAS 10580-19-5 is a versatile and multifunctional compound with important roles in dye synthesis, metal treatment, pharmaceutical development, and chemical analysis. With its combination of high solubility, chemical reactivity, and industrial compatibility, it is a valuable intermediate and additive across various sectors.