White spirit, also known as mineral spirits, mineral turpentine, petroleum spirits, or Stoddard solvent depending on the region and grade, is a petroleum-derived solvent consisting primarily of aliphatic and alicyclic hydrocarbons ranging from C7 to C12. It typically has a boiling range of 140–220°C and is widely used as a paint thinner, cleaning solvent, degreasing agent, extraction solvent, and as an ingredient in aerosols, wood preservatives, lacquers, varnishes, and asphalt products. Since sulfur compounds, particularly mercaptans, contribute to unpleasant odor, high-quality white spirit generally requires sulfur content below 0.1% by weight and is often produced from hydrotreated kerosene with additives that help prevent yellowing.
Mercaptans can be removed through alkaline oxidative treatment, converting them into relatively inert disulfides, while aromatic compounds may be reduced using polar solvents. However, aromatic extraction requires solvent regeneration and may not eliminate odor completely. Odorless Mineral Spirits (OMS) are further refined to reduce aromatic content, making them suitable for applications such as oil painting where lower odor is desirable.
White spirit is one of the most widely used solvents in the paint industry, with a significant share of consumption dedicated to paints, lacquers, and varnishes. It is also commonly used for cleaning paint brushes, automotive parts, tools, and removing adhesive residues from non-porous surfaces. According to the report, growing industrial development has increased demand for paints and coatings, resulting in a corresponding rise in demand for white spirit and mineral turpentine oil, creating favorable opportunities for new market entrants.
| Particular | Value |
|---|---|
| Plant Capacity | 10,000 Ltr./Day |
| Land & Building (8000 sq.mt.) | Rs. 3.60 Cr |
| Plant & Machinery | Rs. 2.76 Cr |
| Working Capital for 1 Months | Rs. 1.30 Cr |
| Total Capital Investment | Rs. 8.03 Cr |
| Rate of Return | 27% |
| Break Even Point | 62% |
White spirit is primarily used as an industrial and household solvent. It is widely employed for thinning oil-based paints, cleaning paint brushes, degreasing machinery and metal parts, removing adhesive residues, and formulating coatings, varnishes, wood preservatives, and aerosols. Its balance of solvency, evaporation characteristics, and compatibility with petroleum-based products makes it one of the most commonly used solvents in the paint and coatings industry.
White spirit is generally produced by refining suitable petroleum fractions such as hydrotreated kerosene. The process typically includes hydrotreatment to reduce sulfur compounds, followed by treatments that remove mercaptans and reduce aromatic content to improve odor and product quality. Depending on the required grade, additional purification and blending steps may be used to achieve the desired physical and chemical specifications.
Low odor improves product usability and workplace comfort. Unpleasant odors mainly originate from sulfur compounds such as mercaptans and from aromatic hydrocarbons. Reducing these components enhances user acceptance, especially for paint thinning, indoor coating applications, and artistic oil painting. Odorless grades are further refined to minimize aromatic compounds while maintaining effective solvent performance.
White spirit is extensively used across paints and coatings, construction, automotive maintenance, metal fabrication, wood finishing, printing, chemical processing, and industrial cleaning. It also finds applications in household maintenance for cleaning tools and equipment. Its versatility as a solvent makes it valuable wherever controlled evaporation and efficient removal of oils, grease, or paint residues are required.
White spirit should be handled as a flammable petroleum solvent. It should be stored in well-ventilated areas away from ignition sources, and appropriate personal protective equipment should be used to minimize skin and eye contact. Proper storage, spill management, labeling, and compliance with applicable safety regulations help reduce operational risks during transportation, storage, and use.
Demand for white spirit is increasing because it supports a wide range of industrial and maintenance applications. Growth in construction, manufacturing, infrastructure development, and the paints and coatings sector contributes to higher solvent consumption. As noted in the project report, expanding industrial activity and increasing demand for paints and coatings create favorable opportunities for white spirit production.
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