polyvinyl chloride: a chemical used to soften the plastic in some coin holders and albums. Also known as PVC, this chemical can damage the surfaces of coins.
polyvinyl chloride A chemical used in coin flips to make them pliable.
Polyvinyl chloride
A somewhat active chemical found in some types of plastic coin flips. Polyvinyl Chloride will cause some coins to tone or turn green over time.
Poor ...
"Polyvinyl Chloride" is a softening chemical used in plastic flips and protective sheets.
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Term Definition
Raw coin ...
PVC - Polyvinyl Chloride - a substance used in the making of certain plastics. When coins are stored in holders made with PVC, the chemical reaction leaves a green slimy film on the over time, will ruin the coins surfaces.
Q ...
A chemical (polyvinyl chloride) used in come coin flips to keep the plastic soft and pliable. PVC can break down and leave slimy film on the coin. PVC flips were largely discontinued in the early 1980s, when its chemical reactivity was first realized.
" Flips made from polyvinyl chloride (PVC)--the most common type--will, in time, leave a cloudy haze on a coin due to breakdown in the polymer, and may decrease its value.
"Soft" flips are made from polyvinyl chloride (PVC) which decomposes over time with disastrous results for coins. They are therefore not suitable for long term storage. Mylar and acetate flips do not contain PVC.
It later developed that polyvinyl chloride (PVC) used to make these flexible envelopes leached out over a period of time and adhered to the surfaces of coins, causing bright copper coins to tone a dull hue, nickel coins to corrode, ...
The more time a coin is exposed to freely circulating air, the more tendency the coin has to change color or tone. Coin holders containing polyvinyl chloride (PVC) should be avoided for long term storage.
Cleaning of Coins ...
Wait until after I've flipped it." Flips made from polyvinyl chloride (PVC)--the most common type--will, in time, leave a cloudy residue on a coin due to breakdown in the polymer, and may reduce its value.
 See also: PVC, Coin, Grading, Damage, Mint
  
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