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Hydrotropic and surfactant properties of novel diisopropyl naphthalene sulfonates
Author(s) -
Burns Robert L.,
Duliba Edward P.
Publication year - 2000
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-000-0140-1
Subject(s) - chemistry , pulmonary surfactant , sulfonate , cloud point , aqueous solution , solubility , surface tension , viscosity , sodium , inorganic chemistry , organic chemistry , chemical engineering , biochemistry , physics , quantum mechanics , engineering
A novel surfactant and hydrotrope, sodium diisopropylnaphthalene sulfonate (SDIPNS) has been developed. It contains about 92% diisopropylnaphthalene sulfonate, compared to other materials which are less than 50% diisopropylnaphthalene sulfonate. Aqueous solutions of 34–36% active SDIPNS have dual functionality. They have excellent surface properties and are compatible with conventional anionic, nonionic, and amphoteric surfactants. They demonstrate good laundering detergency in combination with sodium lauryl ethoxy sulfate, with or without builder. They maintain surface activity in 150 ppm hard water (Ca 2+ /Mg 2+ =2∶1), 5% NaCl, pH 2, and pH 12. They are effective hydrotropes. They enhance surfactant solubility, raise the cloud point of nonionic surfactants, and modify the viscosity of surfactant formulations. They are light in color and are low‐foaming.