Mineral spirits are a type of paint thinner; specifically, they are a more refined, less toxic, and less odorous petroleum distillate used for thinning oil-based paints and cleaning tools. Paint thinner, in general, is a broader category of solvents that may include mineral spirits but can also contain other, more potent, and less refined solvents like naphtha or turpentine, resulting in stronger fumes, faster evaporation, and greater solvency.
Mineral Spirits
- Purity: Higher quality and more refined.
- Odor: Milder odor, and odorless versions are available.
- Toxicity: Less toxic than other paint thinners.
- Evaporation Rate: Slower evaporation, which can lead to a smoother finish.
- Cost: Generally more expensive due to the refinement process.
Paint Thinner
- Purity: A broader category, often less refined, containing a mix of solvents including aliphatic and aromatic hydrocarbons.
- Odor: Strong, pungent smell due to aromatic compounds and other additives.
- Toxicity: Can be more toxic and produce more harmful fumes.
- Evaporation Rate: Faster evaporation rate, which can make it less ideal for achieving a smooth, even finish.
- Cost: Less expensive, making it a common choice for cost-conscious projects.
Think of it this way: all mineral spirits are paint thinners, but not all paint thinners are mineral spirits. When choosing, consider whether you need a higher-quality, smoother finish (mineral spirits) or a more powerful and inexpensive solvent for general cleanup and thinning (paint thinner).
If your project calls for these or other chemicals, it’s best to give us a call and take care of the project. The Doctor makes house calls, 541-497-3804