Cut off as much epoxy as you require and knead in your hand until mixed. Bonds best to rough or uneven surfaces. Cures rock hard. A modern solvent-free version of the old coal tar epoxies used on barges buried pipelines. Smells like asphalt and the uncured epoxy leaves tar like stains on things.
Color is black.
Inexpensive and with more 'flex' and give than other modern epoxies. Would work as a barrier coat, dock paint, etc. Paints on at about 160 square feet per gallon. Apply by roller. Thicken and use as a putty to fill blisters, etc.