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Barium Dinonyl Naphthalene Sulfonate

  • Corrosion inhibitors
  • CAS 25619-56-1

Barium Dinonyl Naphthalene Sulfonate (CAS 25619-56-1) appears in 1 of the 1,812 car-care products CarCareTruth tracks (as of June 2026).

Low acute toxicity at the small concentrations used in corrosion-inhibiting packages (typically ≤3% in finished formulas). Prolonged skin contact with the concentrated ingredient can cause mild irritation. No carcinogenicity, asthmagen, or Prop 65 listings documented for this CAS.

Barium dinonyl naphthalene sulfonate is an oil-soluble corrosion inhibitor used in petroleum-oil lubricants and rust-preventive compounds. It functions by adsorbing onto metal surfaces to form a hydrophobic film that displaces moisture and slows oxidation. At the concentrations used in consumer aerosol lubricants (typically ≤2.6% by weight), its contribution to the overall health and environmental profile of the finished product is minor relative to the bulk petroleum-distillate carrier.

Health & environment profile

VOC
no
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
yes
Biodegradable
no
Bioaccumulative
no
Persistent
yes
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
2/5
Purpose: Oil-soluble corrosion inhibitor — forms a protective film on metal surfaces that resists moisture and prevents rust and oxidation

Common questions about Barium Dinonyl Naphthalene Sulfonate

What is Barium Dinonyl Naphthalene Sulfonate used for in car care?
Oil-soluble corrosion inhibitor — forms a protective film on metal surfaces that resists moisture and prevents rust and oxidation
Is Barium Dinonyl Naphthalene Sulfonate a VOC?
No. Barium Dinonyl Naphthalene Sulfonate is not classified as a volatile organic compound (VOC).
Is Barium Dinonyl Naphthalene Sulfonate on California's Proposition 65 list?
No. Barium Dinonyl Naphthalene Sulfonate is not on California's Proposition 65 list.

1 product contain this

Related

Health and environment notes translate the manufacturer Safety Data Sheet, the GHS classification, and authoritative regulatory listings (California Prop 65, EPA). Not medical advice. They describe the ingredient itself; whether a hazard applies to a finished product depends on its concentration and how it's used.