[Bug] Unsupported compound... not in the mixture

[Naheulf]

Describe the bug
Property package (CoolProp) complain about an unsupported compound, even if that compound is not present in the mixture.

To Reproduce

1. Create a new flowsheet
2. Add these two components (water is optional):
   • Ammonia (CAS:7664-41-7)
   • 1,2-propylene glycol (CAS:57-55-6)
   • Water (CAS:7732-18-5) (Optional)
3. Add these two properties packages
   • Coolprop
   • UNIQUAC
4. Insert a Material Stream with the following properties:
   • Property Package: CoolProp
   • Set the mixture to contain only Ammonia (ratio = 1)
5. DWSIM fail to compute the node and send that error in the logs:

   Error in '1': Error: compound '1,2-propylene glycol' is not supported by this version of CoolProp.
   Parameter name: 1,2-propylene glycol (CoolProp.vb, 2092)

Demo flowsheet : Propylene glycol not supported by CoolProp.zip

Expected behavior
DWSIM should not send components absent from a mixture to the property package.

Screenshots

Desktop (please complete the following information):

• OS: Microsoft Windows [version 10.0.19045.4780]
• DWSIM Version 8.8.1.0 (Cross-Platform UI)

[DanWBR]

unfortunately, this issue cannot be fixed in the short term.