Dinonylnaphthylsulfonic acid

Dinonylnaphthylsulfonic acid
Dinonylnaphthylsulfonic acid
Identifiers
Abbreviations DINNSA
CAS number 25322-17-2
PubChem 93829
ChemSpider 84691 YesY
Jmol-3D images Image 1
Properties
Molecular formula C28H44O3S
Molar mass 460.71 g mol−1
Melting point

259.5 °C, 533 K, 499 °F

Boiling point

600.4 °C, 874 K, 1113 °F

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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Dinonylnaphthylsulfonic acid (DINNSA) is an organic chemical, an aryl sulfonic acid. Its melting point is 259.5 °C and its boiling point is 600.4 °C. It has very low water solubility. It is a moderate skin irritant and a strong eye irritant. It has low volatility and vapor pressure and is stable above 100 °C.

Dinonylnaphthylsulfonic acid is used as an additive in industrial lubricants, greases, cutting fluids, industrial coatings, and corrosion inhibitors. Its calcium and barium salts (CAS numbers [57855-77-3] and [25619-56-1], respectively) have generally the same use.

Dinonylnaphthylsulfonic acid is also used as an antistatic agent added to some distillate fuels, solvents, commercial jet fuels, and to the military JP-8 fuel. This is done to increase their electrical conductivity and dissipate static charges to reduce the fire hazard. It is a component of such additive named Stadis 450.

Dinonylnaphthylsulfonic acid is prepared by reaction of naphthalene with nonene, yielding diisononylnaphthalene. Diisononylnaphthalene then subsequently undergoes sulfonation.

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