
White spirit is a petroleum-derived clear liquid commonly used as a paint thinner and mild solvent. It is often used to clean paintbrushes, tools, and auto parts. While it is a useful solvent, it is not recommended for all surfaces. So, what does white spirit do to plastic? White spirit can be used to clean some plastics, such as PVC window frames and model railway tracks, but it may not be suitable for all types of plastic. Some sources suggest testing it on a small, hidden area of the plastic item first, as it could potentially damage certain types of plastic or leave a residue.
| Characteristics | Values |
|---|---|
| Effect on plastic | May damage plastic, especially HP plastic which becomes porous and brittle with age |
| Effect on electronics plastic | No adverse effects reported |
| Applications | Cleaning, degreasing, paint thinner, mild solvent, lubricant, adhesive remover, cleaning paint brushes, cleaning glass or plastic window frames, regripping golf clubs |
| Composition | A petroleum distillate, mixture of aliphatic, open-chain or alicyclic C7 to C12 hydrocarbons, insoluble in water |
| Grades | Three different types and three different grades |
| Substitutes | Lemon oil glue remover, alcohol, water, isopropyl alcohol, surgical spirit, turpentine |
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What You'll Learn

White spirit is a petroleum distillate
White spirit, also known as mineral turpentine, is a petroleum-derived clear liquid used as a common organic solvent in painting. It is a petroleum distillate with powerful dissolving capabilities. It is commonly used as a paint thinner for oil-based paint and cleaning brushes. Artists use white spirit as an alternative to turpentine since it is less flammable and less toxic.
There are three different types and three different grades of white spirit. The type refers to whether the solvent has been subjected to hydrodesulfurization (type 1), solvent extraction (type 2), or hydrogenation (type 3). Each type comprises three grades: low flash grade, regular grade, and high flash grade. The grade is determined by the crude oil used and the distillation conditions.
White spirit is often used as a paint thinner or as a component, though paint thinner is a broader category of solvent. It is also used as an extraction solvent, a cleaning solvent, a degreasing solvent, and a solvent in aerosols, wood preservatives, lacquers, varnishes, and asphalt products. In households, it is commonly used to clean paintbrushes, auto parts, and tools, and to remove adhesive residue from non-porous surfaces.
White spirit is also used in industries for cleaning and degreasing machine tools and parts and as a thread-cutting and reaming lubricant. It is a major ingredient in some automotive fuel/oil additives, helping to dissolve varnish and sludge buildup.
While white spirit has many practical applications, it is mainly classed as an irritant. Acute exposure can lead to central nervous system depression, resulting in a lack of coordination and slowed reactions. Prolonged or repeated skin exposure can result in severe irritant dermatitis.
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It is used as a paint thinner
White spirit, also known as mineral spirits, mineral turpentine, turpentine substitute, and petroleum spirits, is a petroleum-derived clear liquid used as a common organic solvent in painting. It is often used as a paint thinner or as a component of paint thinner, which is a broader category of solvent. Paint thinner is a general term that describes a product's function rather than its composition, so it can refer to a range of products capable of thinning paint. These include pure mineral spirits, blended mineral spirits, turpentine, acetone, and naphtha.
In the context of painting, white spirit is commonly used as a paint thinner for oil-based paints. It is added to the paint to thin it out and improve its flow, making it easier to apply and work with. The recommended starting point is four ounces of paint thinner per gallon of oil-based paint, and more can be added as needed. White spirit is favoured by artists over other solvents like turpentine due to its milder properties; it is less flammable, less toxic, and has a less offensive odour. The use of odourless mineral spirits (OMS) is recommended for applications such as oil painting, as these have been refined to remove more toxic aromatic compounds.
In addition to its role as a paint thinner, white spirit has various other applications in the realm of painting and household tasks. Within the painting industry, it is used for cleaning paintbrushes, tools, and auto parts. It can also be employed to remove adhesive residue from non-porous surfaces, as a starting fluid for charcoal grills, and in the cleaning and degreasing of machine tools and parts.
While white spirit is a versatile and widely used solvent, it is important to exercise caution when working with it. It is recommended to use it in well-ventilated areas due to its fumes. Additionally, when using white spirit as a paint thinner, it is crucial to follow the recommended ratios and avoid adding it to water-based paints, as it is only suitable for thinning oil-based paints.
In terms of its interaction with plastic, opinions vary. Some sources advise against using white spirit on plastic, as it may discolour or adversely affect the material, particularly in the case of HP plastic, which can become porous and brittle with age. However, others have reported successfully using white spirit to clean plastics without any negative consequences. Therefore, it is advisable to exercise caution and test on a small, hidden area of the plastic surface before proceeding with widespread application.
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It is a mild solvent
White spirit is a petroleum-derived clear liquid commonly used as a mild solvent and paint thinner. It is also known as mineral turpentine, turpentine substitute, and petroleum spirits. While it is a popular solvent for paint, it is also used for cleaning and degreasing. In households, it is commonly used to clean paintbrushes, auto parts, and tools, as well as to remove adhesive residue from non-porous surfaces.
As a mild solvent, white spirit can be used on a variety of surfaces, including glass and plastic. It is often used to clean PVC window frames and has been reported to work well for removing stains. However, some people have expressed concerns about potential damage to the plastic or seals, recommending that it be rinsed thoroughly with soapy water after use.
In industry, white spirit is employed for cleaning and degreasing machine tools and parts. It is particularly useful as a thread-cutting and reaming lubricant when used in conjunction with cutting oil. This substance is also utilised in ultra-precision lathes, commonly referred to as diamond-turning machines.
White spirit is a popular choice for artists as a less flammable and less toxic alternative to turpentine. It is important to note that artists require a higher grade of white spirit than many industrial users to avoid interactions with pigments in oil paints. The complete absence of aromatics is necessary for this application.
While white spirit is a useful solvent, it is important to exercise caution when using it. It is not suitable for consumption and can have adverse effects on human health. Additionally, when cleaning plastics, it is recommended to test it on a small, hidden area first, as some types of plastic may be affected negatively.
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It is used for cleaning and degreasing
White spirit is a versatile and widely used solvent, particularly in the paint industry. It is a petroleum-derived clear liquid used as a common organic solvent in painting. It is also used as a cleaning and degreasing agent.
In the paint industry, white spirit acts as a thinner for oil-based paints, improving their flow and making application easier. It is also used in the production of varnishes and enamels.
White spirit is an excellent cleaner because it can dissolve oils and greases. It is commonly used to clean paintbrushes, machinery, and even parts in automotive workshops. In industrial settings, white spirit is effective in removing greases and oils from metal surfaces, preparing them for painting or further processing.
In households, white spirit is used to remove stubborn stains, like oil or tar, from fabrics and surfaces. It can also be used to clean auto parts and tools, as a starting fluid for charcoal grills, and to remove adhesive residue from non-porous surfaces.
White spirit is also used in screen printing to clean and unclog screens after printing with oil-based textile and plastisol inks. It is used inside liquid-filled compasses and gauges and as a major ingredient in some automotive fuel/oil additives, such as Marvel Mystery Oil, as it can dissolve varnish and sludge buildup.
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It is not suitable for cleaning all plastics
White spirit, also known as mineral spirits, mineral turpentine, turpentine substitute, and petroleum spirits, is a petroleum-derived clear liquid used as a common organic solvent in painting. It is often used as a paint thinner and for cleaning paintbrushes, tools, and auto parts. While it is a useful solvent for many applications, it is not suitable for cleaning all types of plastics.
Some people have expressed concerns about using white spirit to clean certain plastics, such as PVC window frames and radio electronics. There are worries that it may damage the plastic or leave residue. It is always recommended to test on a small, hidden area first. One user reported that white spirit worked well to clean their uPVC fascia and soffit, but they were unsure if it would damage the plastic over time. They suggested using soapy water instead for regular cleaning to prevent dirt buildup.
Another user cautioned against using any petroleum product on HP plastic, as it tends to become porous and brittle with age. They recommended alternatives such as lemon oil glue remover, alcohol, and water for cleaning plastics. Rubbing alcohol (isopropyl alcohol) is suggested as an excellent substitute for dissolving gummy residues and can be found in higher concentrations in some countries.
It is important to note that white spirit is not effective for removing cured paint from plastic. In such cases, a utility knife blade may be a better option for careful removal. Overall, while white spirit can be useful for cleaning some surfaces, it may not be the best choice for all types of plastics, and testing on a small area first is recommended to avoid potential damage.
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Frequently asked questions
White spirit is a petroleum-derived clear liquid used as a common organic solvent in painting. It is commonly used as a paint thinner for oil-based paint and cleaning brushes.
There are conflicting opinions on this. Some sources say that white spirit can be used on plastic, while others advise against using any petroleum product on plastic. It is recommended to try it on a small, hidden piece of plastic first.
Alternatives to using white spirit on plastic include lemon oil glue remover, alcohol, water, and brick cleaning acid diluted in water.
White spirit is commonly used in paints, lacquers, and varnishes. In households, it is used to clean paintbrushes, auto parts, and tools. It is also used as a starting fluid for charcoal grills and to remove adhesive residue from non-porous surfaces.
White spirit is also known as mineral spirits (US and Canada), mineral turpentine (Australia, New Zealand, South Africa), turpentine substitute, and petroleum spirits.


















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