How much isopropanol is effective but safe for viny?

voiceofvinyl....Congrats for clearing up your statements about what chemical is a degreaser and which is a surfactant. In my earlier post I tried to explain how Photo Flo is used in the final rinse of photographic and xray films to eliminate drying spots. As others have mentioned, a very small amount of surfactant is needed to perform it's job. As a final rinse it is added to a large volume of distilled water.I know very little about wet cleaning of vinyl. I only know that the purpose used on films is to eliminate drying spots. If it could enhance the effectiveness if the detergent/degreaser during the actual cleaning process due to the "wetting" properties...I don't know. Perhaps others may be interested enough to conduct their own experiments.I'm not a chemist. I mentioned in my earlier post that some of the more popular dishwasher detergents include a wetting agent in their product to minimize drying spots on dishes. Whether that addition of the wetting agent also helps in the actual cleaning process...again I don't know.Sounds like an ambitious person may be curious to experiment.

The label on my 91% Isopropyl says the other 9% is distilled water. Since we’re all diluting our various alcohol formulations with distilled water anyway, why does 9% already added make Isopropyl unsuitable? Does it contain other impurities? Is the distilled water it contains not distilled enough?
Not criticizing, seeking knowledge.
BTW, have you tried making coffee with distilled water? It’s quite different: pure coffee flavour, with no added mineral tastes. I love it... but coffee is a very personal thing...

91% isopropyl is perfect to use on records. Fully soak a large cotton ball until it’s dripping wet and with a good amount of pressure wipe the record back and forth in the direction of the grooves. After going around the entire thing several times and covering all tracks including runout, get a new cotton ball and repeat the process. Keep doing this until the fresh cotton ball remains white and no longer picks up residue. Wave to dry and start on the next side. Use carbon brush several times prior to playing to clean off any small fibers.

Not all surface debris is light fluffy dust — some is gritty and abrasive. Wiping "with a good amount of pressure" worries me, it might grind that stuff in, drag it around, and premanently scar the vinyl. Have you encountered that, Invictus?

I have just spoken with Duane Goldman (The Disc Doctor) who called on a different topic.  Duane has spent his life studying record cleaning as a chemist.  Duane mixes record cleaner used by the Library of Congress and other archiving organizations.   He s VERY familiar with the vinyl compounds and record material contaminants as well as foreign materials that find their way into record and lacquer grooves.  I asked Duane specifically about using isopropyl alcohol on vinyl.  

Duane contributed the following FACTS to the discussion, but won't post. If you want to confirm this, just call him and ask for FACTS about using isopropyl alcohol on vinyl records.

Without posting his string of "colorful descriptions" of those who would ruin their records with Isopropyl alcohol, he indicated that the use of 0% of isopropyl alcohol is the acceptable threshold, but not more than 0%.  

NO ISOPROPYL ALCOHOL ON RECORDS.  This issue was resolved in the late 70's but some people still choose to ignore the actual scientific facts related to this topic.

Isopropyl alcohol does not dissolve the specific foreign material in the grooves which is the mold release and associated mildew.  

I described the @invictus005 method using cotton balls and 91% isopropyl alcohol.  He said it would leach out the plasticizers which can never be replaced.   Use  NO ISOPROPYL ALCOHOL ON RECORDS.

So the readers of this thread can either take the word of a chemist who has been studying record and lacquer surfaces his entire life or @invictus005 who is someone who can't even identify what the material is that he is trying to remove.