Menu

Sticky coin due to storage in pvc, how to clean?

5 posts • viewed 271 times
Author Message
juliofcampos
Joined: 8-Jun-2017
Posts: 20
Hi,

Pretty straight forward problem.
Had my collection stored for years in PVC sheets and now I'm moving them to holder.
Unfortunately they're sticky due to contact with PVC (I suppose), so how do I remove it from the coins surface?

Thank you
Julio
Sjoelund
Joined: 28-Mar-2012
Posts: 4021
Try the ultrasound and then acetone (outside in free air).

Ole
Globetrotter
Coin variants in English:
https://sites.google.com/site/coinvarietiescollection/home
In French on Cobra's site (not the same)
https://monnaiesetvarietes.numista.com
juliofcampos
Joined: 8-Jun-2017
Posts: 20
Quote: "Sjoelund"​Try the ultrasound and then acetone (outside in free air).

​Ole
​Don't have ultrasound cleaner and the acetone sold in Brazil is diluted, didn't work (5 min dip).

Ran a test with lemon juice (10 min.) and then dish soap (10 min.) followed by abundant rinse in tap water.
Worked, but not for copper for it also removed the patina.

tried vinegar but also didn't work.
Newtony
Joined: 19-Feb-2017
Posts: 24
To remove PVC residue you need something like aceton or if you can't find it something alcohol-based like ethanol, methanol or isopropylalcohol. Basically anything that can be used to remove grease from plastics. If nothing else you can even use gasoline or brake cleaner (found in most garages)

Just remember that ALL the chemicals mentioned are highly flammable and should not be inhaled or touched with bare hands. Always work in a well ventilated area and use protection for your hands and lungs!
HongKongCoinCollector
Joined: 27-Feb-2019
Posts: 169
Quote: "Newtony"Always work in a well ventilated area and use protection for your hands and lungs!
​Beware: some gloves will dissolve in acetone.
Often things turn up in unexpected places.
Keep looking! ;-)

Used time zone is UTC+2:00.
Current time is 06:42PM.