A good 40 years ago, while working in a Shell station, we had a 5 gal pail of Berrymans Chem dip. A fellow mechanic dropped a part to the bottom while dipping a carb, and then went after it with a bare hand and arm. I remember the continual (loud) wailing complaints about it burning after running to the washroom sink, and he lost the hair from his arm. Strange, what we remember, including the smell of that stuff that was like no other solvent. My 1 gallon lasted forever until it rotted the can.