Will Vinegar Dissolve Plastic?

This article investigates a very common question of whether will vinegar eat through plastic and which type of plastics are most affected.

Introduction:

The topic of the article includes vinegar and plastic. By that, it is assumed that the plastic we are talking about is the one of the containers carrying the vinegar itself. To explain the question, will vinegar eat through plastic, we need to dive into the basics first.

We bet that there is a shiny bottle somewhere along the spices and condiments in your kitchen. Vinegar, a commonly used ingredient in our cuisine is an aqueous solution of water and 5% to 8% acetic acid (CH₃COOH) by volume. So, in essence, vinegar is mostly water itself along with trace amounts of flavorings introduced by the manufacturer. It is synthetically produced from ethylene or through fermentation.

If you Google any cleaning tips for anything in your house, you'll probably find recipes calling for vinegar. It is highly praised as a safe, natural cleaning solution that may dissolve hard-water deposits, kill some household bacteria, and remove dirt at a fraction of the price of name-brand cleaners but is it safe to use on plastics?

Plastic Used in Vinegar Containers:

For containing food items like vinegar and many others like syrups, milk, ketchup, and fruit juices are kept in containers made from food-grade plastic. In these plastics, polyethylene terephthalate PET) or High-density polyethylene or HDPE are commonly used. Both of these plastics are heavily used in the food industry and hold a good reputation for being safe containers of food items.

Will Vinegar Eat Through Plastic?

If we are talking about the plastic containing the vinegar itself then the plain answer is no, it won’t. Vinegar itself is mostly water and acetic acid is not a strong acid. Second, vinegar is usually kept in HDPE and PET plastics which are extremely durable due to their high molecular weight and liner structure of repeating ethylene units. These units are arranged in a crystalline structure with an overall rigid formation.

Moreover, the absence of branching in its molecular structure gives it a durable feature. Due to this, it is nearly impossible for vinegar to break through such strong molecular structures. Next time someone asks you “Does vinegar Destroy Plastic”, you can directly point toward the vinegar bottle in your kitchen.

For any other kind of plastic, vinegar is most likely safe to use as it is very diluted in concentration and is mostly water. Having said that, it should be noted that in special conditions, one can witness the effects of vinegar on plastics. For example, if vinegar is kept in plastic for a prolonged period under elevated temperatures, there can be degradation of that plastic especially if the plastic is not made from the industrial standards. Plastics that are not designed for prolonged use (like low-density polyethylene LDPE) can show a reaction between the vinegar and their molecules if exposed to elevated temperatures. For a few years, vinegar may be stored in a PE or PS container without risk; nevertheless, the natural aging process and other agents' deterioration can cause noticeable damage to the plastic container especially if the plastic used is not the standard one. This is why vinegar is not recommended for cleaning knives (it promotes corrosion), cleaning kitchen marble (can cause defects in the surface), wood (streaks the surface), and many more cleaning chores.

Typically, polymers are combined with various “additives” to create plastic items commonly used in our homes. Vinegar may have an impact on these additives trapped in between the polymers, which include plasticizers, stabilizers, colorants, fillers, and processing aids. Vinegar may hasten these ingredients' emigration to the plastic's surface and separation. This process leads to early plastic performance degradation, such as brittleness and color change.

Wrapping Up:

To conclude the answer to the question “Will vinegar eat through plastic “, it can be concluded that vinegar cannot damage standard plastics in which they are packed. Common plastics are made of thermoplastic polymers with strong molecular structures that are insoluble in water, so vinegar will not dissolve them under normal circumstances. However, there is a chance of color change and brittleness in low-grade plastics not designed to contain vinegar for a prolonged period.