Omar Khalid
Rubbing alcohol, or isopropyl alcohol, is a common household item with a wide range of uses, from cleaning blinds to removing permanent marker stains. However, it's important to note that alcohol can damage certain surfaces, especially plastics. When used on plastic, alcohol can leave a white haze or residue, and may even cause discolouration or cloudiness. In some cases, alcohol can break down the plastic, making it susceptible to cracking. Therefore, it's recommended to avoid using alcohol to clean plastic items, especially those made of acrylic or polystyrene. Instead, a soft microfiber cloth or mild soap and water can be used for cleaning.
| Characteristics | Values |
|---|---|
| Effect on plastic | May corrupt the surface, especially if it is shiny or polished |
| Can cause a white haze or streaks on the surface | |
| May cause plastic to crack and leak | |
| Can cause discoloration | |
| Can be used to clean greasy surfaces | |
| Can be used to clean plastic electronics |
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What You'll Learn
Isopropyl alcohol leaves a white haze on plastic
Isopropyl alcohol, also known as 2-propanol or IPA, is a common chemical with strong hygroscopic properties, meaning it draws moisture from the atmosphere. It is a popular household item used for cleaning and removing stains. However, it is known to leave a white haze on plastic surfaces, especially those that are shiny or polished. This is because IPA has bigger organic chains and is less polar than other alcohols, which can cause it to react poorly with certain plastics, such as polystyrene and polymethyl methacrylate. The white haze is more visible on clear and shiny plastics and less noticeable on filled black shiny plastic.
While IPA is effective at removing grease and dirt from plastic surfaces, it can leave behind a residue that evaporates rapidly. This residue haze can be reduced or eliminated by softly rubbing the surface with a cloth lightly soaked with mineral oil, petroleum jelly, or silicone oil. This technique fills in the gaps left by the partial solution or disruption of the polymer matrix caused by the IPA. Lukewarm water with detergents is generally preferred for cleaning plastics, as it is less likely to leave a haze.
To avoid the white haze, it is recommended to use a less aggressive cleaner on plastic surfaces. Glass plus, for example, does not contain alcohol or ammonia and can be used to clean plastic effectively. Cleaners sold for plastic eyeglass lenses or computer screens are also suitable options. Additionally, polishing or applying a self-polishing coating may help remove the haze caused by IPA.
In some cases, the white haze may be challenging to remove, and it is unclear if the discolouration is permanent. It is important to note that IPA should not be used on plastic surfaces if it consistently causes this issue. While IPA is a common and versatile cleaner, it is essential to be aware of its potential impact on certain materials, such as plastics.
Overall, while isopropyl alcohol is a useful household cleaner, its propensity to leave a white haze on plastic surfaces is a known issue. To mitigate this problem, it is recommended to use alternative cleaning solutions, polish the affected surfaces, or apply a suitable coating.
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Ethanol and ethyl alcohol damage plastic surfaces
Ethanol and ethyl alcohol can damage plastic surfaces. Even common alcohol (ethanol, ethyl alcohol) is known to corrupt the surface of some plastics. While it may not dissolve plastics to a large extent, it may corrupt surfaces, especially if they are shiny or polished. For instance, compact polystyrene or polymethyl methacrylate, which are often clear and shiny, may exhibit a white milky haze after coming into contact with ethanol or ethyl alcohol. The same is true for filled black shiny plastic, where the haze and lack of shine are notable.
Isopropyl alcohol, which is commonly used for cleaning, may also damage plastic surfaces. It generally shows good compatibility with plastics, but its effects vary by type and concentration. For example, plastics such as polyethylene and polypropylene may leave a residue haze, especially on shiny surfaces. PVC is suitable for lower concentrations of isopropyl alcohol, but glossy surfaces may exhibit a haze.
To minimize potential damage, it is recommended to dilute isopropyl alcohol with water before use. PVDF and PTFE, on the other hand, have high resistance to isopropyl alcohol, ensuring effective cleaning with minimal residue retention.
It is important to note that the use of alcohol with plastic tips may interfere with certain processes, such as radioimmunoassays of progesterone. Therefore, if the use of alcohol and plastic cannot be avoided, it is recommended to reduce the amount of alcohol used to 1% or less.
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Alcohol can cause plastic to crack
The use of isopropyl alcohol on plastic can also lead to a loss of finish and noticeable scuffing. This is because alcohol can eat away at the surface of the plastic, causing it to crack. It is therefore advised that plastic items are cleaned with soap and water, or a mild detergent, instead of alcohol.
In addition, alcohol can shrink, discolour, and wear down the fibres of synthetic or sensitive materials like rayon, silk, and wool. It can also corrode the coatings of fragile jewellery made of pearls or opals. Therefore, it is important to be cautious when using alcohol to clean items that contain plastic or are made of sensitive materials.
It is worth noting that diluted isopropyl alcohol may be less likely to leave a residue on plastic surfaces. However, it is still recommended to avoid using alcohol on plastic items whenever possible to prevent potential damage. Overall, it is best to avoid using alcohol as a cleaning agent on plastic items to prevent any potential damage or discolouration.
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Plastic laminate and sealed marble are safe with alcohol
When it comes to cleaning and disinfecting, isopropyl alcohol, also known as rubbing alcohol, is a common and versatile household item. It can be used for various purposes, from cleaning blinds to removing permanent marker stains. However, it is important to be cautious when using alcohol on certain surfaces, especially plastics.
While alcohol can effectively clean most surfaces, it should not be applied to permeable materials like quartz and granite. On the other hand, plastic laminate and sealed marble are fine to use with alcohol. In fact, alcohol can be used to clean and disinfect these surfaces without causing any harm.
Plastic laminate, such as High-Pressure Laminate (HPL) or Thermally Fused Laminate (TFL), is a durable and scratch-resistant material often used for countertops and furniture. HPL, in particular, is created by layering paper infused with resin and bonding it under high heat and pressure, resulting in a more durable and scratch-resistant surface compared to TFL. This makes it an ideal choice for high-use surfaces that require extra durability.
Sealed marble is another surface that pairs well with alcohol. Sealing marble helps protect it from staining and slows down the absorption of liquids. There are different types of sealers available, such as impregnating sealers, which are formulated to go just below the surface of the stone. Alcohol-based sealers are effective for porous materials like white marble as they can penetrate deeper into the stone fabric.
In summary, plastic laminate and sealed marble are safe to use with alcohol. These surfaces can be effectively cleaned and disinfected with alcohol without causing any damage or corrosion. However, it is always a good idea to test a small area first and follow any manufacturer's instructions for specific care guidelines.
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Alcohol can be used to clean plastic electronics
While alcohol is a versatile household item with numerous applications, its use on plastic requires caution. Alcohol can damage some plastics, especially those with shiny or polished surfaces, such as compact polystyrene or polymethyl methacrylate. This is because alcohol can leave a white haze on the plastic surface, which can be challenging to remove.
However, when it comes to cleaning plastic electronics, alcohol, specifically isopropyl alcohol (IPA), can be a useful and safe option. Isopropyl alcohol is a common solvent used in the electronic assembly, repair, and maintenance processes. It is effective at removing various contaminants, including oils, adhesives, fingerprints, soldering flux, and other residues. Its ability to dissolve both polar and non-polar soils makes it ideal for cleaning light oils, fingerprints, cutting fluids, flux residues, carbon deposits, and mold release.
Isopropyl alcohol is particularly useful for cleaning plastic electronic components such as keyboards, mouse pads, computer monitors, laptop exteriors, and game controllers. It can also be used for internal electronics, especially printed circuit boards (PCBs), but with extra caution. When cleaning internal electronics, it is crucial to use isopropyl alcohol with a grade of 90% or higher. Lower-grade alcohol contains too much water, which can increase the dry time and leave behind residue.
To ensure safe and effective cleaning of plastic electronics with isopropyl alcohol, follow these steps:
- Unplug the device before cleaning.
- Avoid pouring alcohol directly onto the device. Instead, apply a moderate amount to a lint-free cloth or cotton swab.
- Wear gloves to protect your skin from potential irritation.
- Ensure good ventilation in the workspace.
- For internal electronics, use isopropyl alcohol with a grade of 90% or higher to prevent residue buildup.
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Frequently asked questions
Alcohol can cause a residue or white haze to appear on plastic surfaces, especially if the surface is shiny or polished. It can also cause plastic to crack and become susceptible to bacteria.
Isopropyl alcohol, also known as rubbing alcohol, should not be used on plastic. This includes the 70% isopropyl alcohol that can be purchased at drug stores.
Yes, it is recommended to use mild soap and water to clean plastic. A soft microfiber cloth can also be used to dust plastic.
