Is carrageenan permissible, knowing that it may be crystallized with ethyl alcohol, isopropyl alcohol, or potassium chloride?

Carrageenan is extracted from red algae and used in the food industry. There is no harm in consuming it because the default ruling for what comes from the sea is permissibility. If it is produced using alcohol, and the alcohol is completely consumed such that it does not intoxicate, then it is excused due to its transformation and consumption. Thus, there is no harm in consuming it as long as it does not lead to harm.