# What chemical could dissolve low-density polyethylene?

What chemical could dissolve plastic aside from acetone? Preferably, low-cost and environmentally friendly. Any suggestions would be helpful.

I'm targeting for thin plastic (low-density polyethylene). Environmentally friendly for me is that it follows the EPA standards from the USA. I'm targeting for around 150 USD. I'm okay with solvents that make the plastic swell, but a chemical that could dissolve it is preferable.

• 150 USD for... what? Per liter, per tonne, per day? Can you say anything at all about what you're trying to do? – jeffB Jul 3 '19 at 1:50

• The safest solvent might be supercritical carbon dioxide, $$\ce{CO2}$$. Supercritical carbon dioxide is also used in "green" dry-cleaning. Use for dissolving polymers requires a pressure vessel for ~5 to 50 MPa, able to work at ~40 to 100°C. There are (paywalled) articles at ACS and NCBI, if you want to investigate further.
Supercritical $$\ce{CO2}$$, while not very toxic, can cause asphyxiation above ~5%, and the container is, effectively, a bomb containing a warm or hot pressurized fluid.