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ArroChem’s Mineral Spirits Rule 66 – Solvent 140, also known as White Spirits, is a hydrocarbon-based solvent derived from petroleum distillation that is hydrotreated to reduce aromatics and olefins. It is a widely used industrial solvent with excellent dissolving capabilities and a relatively high flash point. Solvent 140 is one of the variants of mineral spirits classified under Rule 66.

General Characteristics:


Chemical Composition:

Solubility in Water, 25°C:

Flash Point:

Specific Gravity:   



Clear, colorless liquid

Hydrocarbon solvent mixture


40.5°C (105°F)

0.7487 – 0.8017 at 60°F


Mineral Spirits Rule 66 – Solvent 140 is a versatile solvent used in various industrial and commercial applications due to its excellent solvent power and moderate evaporation rate. Key applications include:

  • Paints and Coatings: Used as a thinner in oil-based paints, varnishes, enamels, and coatings.
  • Degreasing: Employed for degreasing and cleaning of metal surfaces and machinery.
  • Adhesives and Sealants: Used as a solvent in adhesives and sealants to improve flow and application properties.
  • Printing Industry: Found in printing inks as a solvent and carrier for pigments.
  • Rubber and Polymer Industry: Used as a processing aid and solvent in rubber and polymer manufacturing.



Frequently Asked Questions

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