How To Clean Coins With Coke
Last updated on December 21st, 2024 at 08:54 pm
Have you ever wondered if it’s possible to clean coins with Coke? The idea might seem surprising, but it actually works. Using Coke to clean coins is a simple, effective way to bring some shine back to old, dirty coins. Coke contains phosphoric acid, which effectively breaks down grime, tarnish, and oxidation that often accumulate on coins. A study published in the Journal of Chemical Education highlighted the effectiveness of Coke’s acidic properties for cleaning metals, thanks to the presence of both phosphoric and carbonic acids. These acids work to dissolve rust and mineral deposits, making Coke an accessible and affordable option for cleaning. Let’s break down exactly how to do it, the science behind it, and what you need to keep in mind.
Why Clean Coins with Coke?
Coke contains phosphoric acid, which is great for removing grime and rust. It works wonders on metals, including the coins you’ve been meaning to clean. Coins can accumulate layers of dirt, oxidation, and even sticky residue over the years, making them lose their shine. Cleaning coins with Coke is a popular method because it is accessible, affordable, and easy to do at home.
Why Is Coke Effective In Cleaning Coins?
Coke is recommended for cleaning coins as it contains phosphoric acid that adds tartness to the beverage.
Its mild acidity is ideal for removing rust stains.
However, it’s important not to leave your coin in phosphoric acid for too long as it could damage its surface.
How to Clean Coins with Coke: Step-by-Step Guide
Step 1: Gather Your Supplies
- A can or bottle of Coke
- A bowl or container
- Dirty coins
- Gloves (optional, but recommended)
- An old toothbrush or soft cloth
Step 2: Soak the Coins
- Pour enough Coke into your bowl to fully submerge the coins.
- Place your coins in the Coke and make sure they are completely covered.
- Let the coins soak for at least 2-3 hours. For heavily tarnished coins, you can leave them in overnight.
Step 3: Scrub the Coins
- After soaking, remove the coins from the Coke.
- Use an old toothbrush or a soft cloth to gently scrub each coin, focusing on areas with built-up grime.
- The acids in Coke will have loosened the dirt, making it easier to remove with light scrubbing.
Step 4: Rinse and Dry
- Rinse the coins thoroughly under clean water to remove any remaining Coke residue.
- Pat them dry with a soft cloth or let them air dry completely before storing.
Is It Safe to Clean Coins with Coke?
Cleaning coins with Coke is generally safe for everyday pocket change, as the acidic properties effectively break down dirt and tarnish without causing significant damage. However, it’s important to be cautious if you are dealing with valuable or collectible coins. The acids in Coke, particularly phosphoric acid, can strip away the patina or natural finish, which is a key aspect of a coin’s value to collectors. Therefore, while Coke is safe for cleaning modern coins that are not rare or valuable, it is not recommended for collectible coins, as their value often lies in their original state and patina.
Can Coke Restore Old, Heavily Tarnished Coins?
Coke can be an effective solution for restoring old, heavily tarnished coins, but its effectiveness depends on the type of coin and the extent of the tarnish. The phosphoric acid in Coke works by breaking down the oxidation and grime that cause tarnishing, helping to restore some of the original shine. For coins that are heavily tarnished, soaking them in Coke for a few hours can make a significant difference.
Coke might not fully restore coins that are deeply corroded or those with significant metal loss. Additionally, while Coke can restore shine, it may also strip away valuable patina, which can affect a coin’s value if it is a collectible.
What Types of Coins Can Be Cleaned with Coke?
- Modern Pocket Change: Coins like pennies, nickels, dimes, and quarters from recent years can be safely cleaned with Coke. These coins are typically made of less valuable metals, so there’s no major risk of losing significant value.
- Copper Coins: Coke works particularly well on copper coins, helping to remove oxidation and restore some of the original shine.
- Circulated Coins: Coins that have been in circulation and have lost their collectible value can be cleaned effectively with Coke.
However, avoid using Coke on:
- Collectible Coins: Rare coins or those with historical value should not be cleaned with Coke, as the acid can damage their patina and decrease their worth.
- Silver or Gold Coins: Precious metal coins are best left uncleaned or handled by a professional
What Happens If You Leave Coins in Coke for Too Long?
Coke’s acidity, primarily from phosphoric acid, is effective at breaking down grime and tarnish, but extended exposure can cause corrosion. When coins are soaked beyond the recommended time, they can start to lose their natural finish, resulting in discolouration or pitting, especially in metals like copper. This can significantly affect the coin’s appearance and, in some cases, weaken its structure. For collectible coins, over-soaking can strip away the valuable patina, making them less desirable to collectors.
The key to cleaning coins with Coke is to limit the exposure time. Typically, 2-3 hours is sufficient for most coins.
How Else Can You Clean Coins?
Coke is an effective coin cleaner, but it’s not the only one out there. Here are some other substances you can use to get coins clean.
- Hydrogen Peroxide: Hydrogen peroxide is great for getting that greasy feeling off your coins.
- Vinegar: Vinegar is strong enough to clean coins that are oxidized. You can tell a coin has oxidized as it will have a white or green powdery layer over it.
- Ketchup: Ketchup may seem like an unlikely coin cleaning solution, but it works. The combination of salt and acidity removes dirt like a charm.
- Lemon Juice and Salt: Lemon juice, like Coke, is acidic and works well at breaking down grime. Adding a bit of salt creates a slightly abrasive solution that can help scrub off tarnish.
- Olive Oil Soak: For coins that are particularly delicate or have a lot of build-up, soaking them in olive oil can help loosen the dirt without risking any chemical damage. This process can take several days to weeks, making it a good option if you have time and want a gentle solution.
- Ammonia Solution: A diluted ammonia solution can be used to clean coins, especially those made of nickel or copper. However, you need to be cautious when using ammonia, as it can be quite harsh. Always rinse thoroughly and use gloves for safety.
- Toothpaste: Toothpaste is mildly abrasive and can be used to polish coins. It works well for removing surface grime, but it can also scratch softer metals.
- Electrolysis: This is a more advanced method that uses electricity to clean coins. It’s highly effective at removing oxidation and other stubborn grime, but it’s also complex and can damage the coin if not done properly. This method is generally not recommended for beginners or for coins of value.
Tips For Cleaning Coins With Coke
Here are some additional tips to take note of.
- Don’t clean valuable coins. They will have formed a patina that collectors like because it is a sign of their value. If you clean off the patina, they will be worth less.
- Don’t wash coins together. Some coins are made of materials that can discolor other coins. It’s best to wash them separately to prevent discoloration from occurring.
- Test on a Single Coin First: Before you soak all your coins, try it out on one to see if you’re happy with the result.
- Avoid Over-soaking: Leaving coins in Coke for too long can cause minor corrosion, especially with certain metals like copper.
- Use a Soft Brush: Be gentle to avoid scratching the surface.
FAQs About Cleaning Coins with Coke
Does cleaning coins with Coke damage them?
For common coins, Coke is generally safe. However, cleaning collectible coins with Coke is not recommended, as the acid can damage the coin’s natural finish and reduce its value.
How long should I leave the coins in Coke?
For most coins, 2-3 hours is enough. If the coins are particularly dirty, you can leave them overnight. Just be cautious, as over-soaking may cause corrosion.
Can I use any other soft drink?
Yes, other sodas that contain phosphoric acid, like Pepsi, can also be used. However, Coke is typically preferred due to its higher acidity.
Final Thoughts on How to Clean Coins with Coke
Cleaning coins with Coke is a straightforward process that works well for pocket change and other non-collectible coins. If you’ve got a pile of grimy coins that need a little TLC, Coke might just do the trick! Just remember to rinse thoroughly and avoid using this method on any coins that might be worth something to collectors.
Have you tried cleaning coins with Coke? Share your experience in the comments below. If you found this guide useful, feel free to share it with friends who could use some coin-cleaning tips!
About The Author: Hi, I’m Jessica. I’m a Mom of 2 and I love DIY hacks, home decor ideas and non-toxic cleaning tips. I created this website to share my knowledge with a community of like-minded people who love simple, easy and safe ways to keep their home clean and inspiring. I hope you enjoy!