Hello,
In the newest ecoinvent 3.12 version we have included the ecoinvent properties like carbon content, water content etc. into the flow description field. You can also look up the properties in ecoQuery if you want to.
One point to mention is that it does not make sense to attach the properties to exchanges, since ecoinvent only provides them per flow. It means, that all exchanges that use this flow will have the same property, e.g. electricity costs the same in China and in Europe.
Nevertheless, it can be sometimes useful for modeling and allocation to have these values if no other/better values exist. But care should be taken in using them and they should be checked for plausibility and if the property fits to the specific exchange. As mentioned before, they can be always looked up in ecoQuery, or since version 3.12, can be looked up in the flow description field.
Best wishes,
Conrad