Maya Ellison
Plastic containers are commonly used to store alcohol, but the type of plastic used is important. While plastic containers are convenient, some plastics can affect the flavour of the alcohol over time. The most suitable plastics for storing alcohol include PET, HDPE, LDPE, PP, PPS, and PTFE. These plastics are commonly used for packaging alcohol in the United States, Canada, and Europe. It is important to note that oxygen can diffuse into the container and affect the flavour, especially when storing for extended periods. Glass is still considered the best option for long-term storage to avoid any changes in taste.
| Characteristics | Values |
|---|---|
| Plastic type | PET, HDPE, LDPE, PP, PPS, PTFE, Polyethylene Terephthalate (PETE) |
| Plastic properties | Hard, stiff, strong, heavy, scratch-resistant, good barrier to odour, gas, and moisture |
| Alcohol compatibility | Ethanol, isopropanol, other types of alcohol |
| Plastic applications | Food-grade containers, cosmetic bottles, household bottles, milk jugs, laundry detergent bottles, yogurt containers, syrup bottles |
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What You'll Learn
Food-grade plastics are suitable for storing alcohol
PET containers are acceptable for storing still wine, and they can also handle high pressures, making them suitable for short-term storage of distilling mash or "banana beer". They are commonly used for fizzy drinks bottles and can be used to store beer for up to 6 months. However, over time, CO2 gas will diffuse through the bottle walls, leading to depressurisation.
Other food-grade plastics like HDPE (high-density polyethylene) and PP (polypropylene) are also options for storing alcohol. HDPE is widely used for plastic bottles and has good chemical resistance, making it suitable for storing alcohol. PP shares similar characteristics with HDPE and is known for its good barrier properties against moisture, oil, and alcohol. LDPE (low-density polyethylene) is another option, known for its chemical resistance and suitability for alcohol storage.
It is worth noting that some sources express concerns about using plastic for storing alcohol, particularly for human consumption. Traces of phthalates have been found in alcohol samples stored in plastic, and some people have reported a noticeable plastic taste. Silicone leak-proof travel bottles are also said to break down when in contact with alcohol. Therefore, it is important to use food-grade plastics that are specifically designed for alcohol storage and to follow any guidelines or recommendations provided by manufacturers.
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PET containers are good for short-term alcohol storage
PET containers are a good option for short-term alcohol storage. They are commonly used for storing fizzy drinks and can handle high pressures, making them suitable for storing distilled spirits and beer for a few months. However, it's important to note that oxygen can diffuse inward, potentially affecting the flavour of the alcohol over an extended period.
PET containers are widely available and can be found in various sizes, making them convenient for storing alcohol. They are also lightweight, which is advantageous for transportation and storage. Additionally, PET containers are known for their ability to handle high pressures, which is beneficial for storing carbonated beverages like beer.
When it comes to alcohol storage, oxygen ingress is an important factor to consider. While glass provides the best barrier against oxygen ingress, PET containers are a suitable alternative, especially in regions where glass may not be easily accessible. By using PET containers, you can effectively store your alcohol for a short period without significant oxidation affecting the flavour.
It is worth noting that PET containers may not be ideal for long-term alcohol storage. Over time, carbon dioxide gas can slowly diffuse through the walls of the container, leading to a gradual depressurisation of the beverage. This means that beverages like beer cannot be left to mature or age for an extended period while remaining fizzy. Therefore, PET containers are most suitable for short-term storage, typically up to six months, depending on the type of alcohol.
In summary, PET containers are a practical and accessible option for short-term alcohol storage. They offer convenience, pressure resistance, and oxygen ingress control, making them a preferred choice when glass is not readily available. However, for long-term storage, it is recommended to consider other options to maintain the optimal flavour and carbonation of the alcohol.
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HDPE is a good option for storing alcohol
When it comes to storing alcohol, various factors need to be considered to ensure safety and maintain the quality of the beverage. While glass is often the preferred choice for storage, certain plastics can also be suitable, depending on the specific circumstances and the type of alcohol involved. One such plastic that is a good option for storing alcohol is High-Density Polyethylene (HDPE).
HDPE is a type of plastic that is widely used for various purposes due to its durability and chemical resistance. It is known for its hardness, stiffness, and strength, making it an ideal material for containers that need to withstand impact and exposure to chemicals. This is particularly relevant when considering the storage of alcohol, as it can help prevent leaks and ensure the integrity of the container.
One of the key advantages of using HDPE for alcohol storage is its chemical compatibility. HDPE is resistant to acids and caustics, making it suitable for storing alcoholic beverages that may have acidic properties. Additionally, HDPE has good alcohol resistance and is commonly used for containers that require a barrier to moisture, such as milk jugs and detergent bottles. This makes it a good option for storing alcoholic beverages that may contain water or other liquids, as it can help prevent leakage and maintain the quality of the product.
Another benefit of HDPE is its ability to handle pressure. Alcoholic beverages, especially those with higher concentrations of alcohol, can produce significant pressure during storage. HDPE containers are capable of withstanding this pressure without deforming or leaking, which is essential for maintaining the safety and integrity of the product. Furthermore, HDPE is a food-grade plastic, which means it is safe for storing consumable products, including alcohol. This is a critical consideration to ensure the safety of consumers and maintain compliance with regulations.
While HDPE offers several advantages for storing alcohol, it is important to consider certain limitations. One drawback of HDPE is its poor odour barrier properties. Unlike some other plastics, such as Polyethylene Terephthalate (PET), HDPE does not provide a strong barrier against odours. This means that alcoholic beverages stored in HDPE containers may be more susceptible to absorbing or imparting odours from their surroundings. Therefore, it is important to consider the environment in which the alcohol is stored and take appropriate measures to minimise odour-related issues.
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LDPE is alcohol-resistant but softer and less strong
LDPE (low-density polyethylene) is a type of plastic that is alcohol-resistant. It is defined by a density range of 0.910–0.940 g/cm3. LDPE is non-reactive at room temperatures, except when exposed to strong oxidizing agents, and some solvents may cause it to swell. It is flexible and tough, but it is also breakable. LDPE has weaker intermolecular forces and lower tensile strength than its counterpart, HDPE. Despite its flexibility and toughness, LDPE is softer and less strong structurally than other plastics. Its resilience, however, is higher than that of HDPE.
LDPE is known for its excellent resistance to various substances, including dilute and concentrated acids, alcohols, bases, and esters. It exhibits no chemical reaction with these substances. Additionally, LDPE has good resistance to aldehydes, ketones, and vegetable oils, although minor attacks or very low chemical reactivity may occur.
When it comes to storing alcohol, LDPE is considered suitable for short-term storage. It is important to note that LDPE is not as strong as other plastics, and it is generally recommended to avoid using LDPE for alcohol storage, especially for long periods. This recommendation is supported by sources suggesting that glass is the preferred choice for storing alcohol, followed by PET (polyethylene terephthalate), polyethylene, and polypropylene.
While LDPE is alcohol-resistant, it is important to consider the potential drawbacks of using it for alcohol storage. LDPE has limited resistance to certain substances, including aliphatic and aromatic hydrocarbons, mineral oils, and oxidizing agents. These substances can cause a moderate attack or significant chemical reaction, making LDPE unsuitable for long-term use in their presence.
In summary, LDPE is alcohol-resistant, but its softer and less strong nature makes it less ideal for alcohol storage compared to other options. It is essential to consider the specific requirements and conditions when choosing the appropriate material for storing alcohol. Other factors, such as oxygen ingress and pressure, also play a role in determining the best storage container for alcohol.
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PP is a stiff, alcohol-resistant plastic
Polypropylene (PP) is a commonly used plastic with a wide range of applications. It is known for its toughness and versatility, and is used in industries such as healthcare, automotive, packaging, and electrical applications. PP plastic has a high stiffness, making it ideal for maintaining structural integrity in various products. Its stiffness also helps protect packaged goods during transportation.
One of the key advantages of PP plastic is its chemical resistance. It resists many chemicals, including acids, alkalis, and solvents, and is therefore suitable for use in harsh chemical environments. This chemical resistance also extends to alcohol. PP plastic is a good barrier to alcohol and can resist its corrosive effects, making it suitable for storing alcoholic beverages or for use in cleaning applications with alcohol-based products.
PP plastic has a relatively high melting point, making it suitable for applications that require moderate heat resistance. It can be easily processed through injection moulding, which, along with its low cost, makes it an attractive option for manufacturers. The low density of PP plastic also translates to lightweight products, which is advantageous in certain applications such as automotive parts, where it can help improve fuel efficiency.
While PP plastic offers high stiffness and impact resistance, its surface tends to scratch easily. It also has poor UV resistance and can degrade quickly when exposed to sunlight, making it unsuitable for some outdoor applications. However, additives can be used to improve its UV resistance and other properties, such as mechanical strength and appearance.
Overall, PP plastic is a stiff and alcohol-resistant material with a wide range of applications. Its chemical resistance, stiffness, and processing advantages make it a popular choice for manufacturers, particularly in the automotive and packaging industries.
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Frequently asked questions
Food-grade PET containers are acceptable for storing still wine. However, oxygen can diffuse inward and affect the flavour of the wine over time. Polyethylene and polypropylene are also suitable, with polypropylene being commonly used for brewing buckets.
PET, HDPE, LDPE, PP, PPS and PTFE are all suitable for storing ethanol or isopropanol, the two most common hand sanitising agents.
HDPE (high-density polyethylene) is the most widely used material for plastic bottles. It is hard, stiff, strong and has good impact resistance.
PET (polyethylene terephthalate) is a type of plastic commonly used for fizzy drinks bottles and beer storage. It is a good barrier to odour, gas and moisture.
