Right on cleeds. There is a method to handling records. As cleeds relates do not touch the playing surface. ljgerens you are right in regards to oils. They are very fugitive however if you wash your hands before handling the records the transfer of skin oils to the record is minimal if you are handling the record correctly. But if you like wearing clean room gloves and get them cheap why not. I have never worn clean room gloves and you will never find a finger print on any of my records.
CuCL2 is brown. It absorbs moisture to form the dihydrate which is light blue. To form Malachite or Brochantite, both green, copper is fully oxidized then on exposure to atmospheric contaminants forms these compounds also termed patina. Chlorine is not involved. The only references I can find in regard to PVC releasing HCL relate this to the PVC being burned like in a house fire.
CuCL2 is brown. It absorbs moisture to form the dihydrate which is light blue. To form Malachite or Brochantite, both green, copper is fully oxidized then on exposure to atmospheric contaminants forms these compounds also termed patina. Chlorine is not involved. The only references I can find in regard to PVC releasing HCL relate this to the PVC being burned like in a house fire.