You can't find the chart because there's no need in such a chart.

I'd say that at 7atm pressure the gas can still be considered as an ideal one.

Then we have N=P/k/T [1/m3] and

density = N*M_CO2 [kg/m3] where M_CO2 is a mass of a single CO2 molecule.

Substitute the values yourself and don't forget to use T in [K].

https://chembugs.files.wordpress.com/2015/12/perrys-chemical-engineering-handbook1.pdf

Refer to the link below:

https://www.engineeringtoolbox.com/carbon-dioxide-density-specific-weight-temperature-pressure-d_2018.html

Use this calculator.

https://www.engineeringtoolbox.com/carbon-dioxide-density-specific-weight-temperature-pressure-d_2018.html

Thank you for all the answers.