What's the problem? Why can't you just use an available, appropriate cable? Why do you need an exact match?
PVC usually has 'plasticizers' added to give it flexibility. In truth, PVC is a very stiff / rigid plastic.
It's the plasticizers that give a new shower curtain that distinct smell. These additives evaporate over time, and the process can be sped up by heating the PVC or setting it in the sun.
There was a scandal a few years ago where the power companies on the West Coast bought grey wire that proved not to be sunlight resistant at all. That vendor is -surprise- no longer around. Perhaps this wire also has a defective jacket.
"Abrasion resistance" is a specification I'm not familiar with.
The "P109776" number is likely a 'file number' used by UL to identify the place of manufacturer (to them alone!). Again, this suggests that maybe the manufacturer farmed out the production to the stir-fry of third-world factories.
