How to measure carbon black concentration in hexane

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Fernando Vallejos-Burgos

Carbon blacks in solution should strongly absorb light in UV-Vis range. Then that is one option of concentration is low.

If concentration is high, you can dry some volume of solution in a TG pan. Then determine the carbon black weight by burning it in air (around 400 ºC probably) or just weighing before/after.

Yechan Won

Thanks for the answer. can you give me your reference if possible - specifically the high concentration part? I just want to see the procedure in detail. Thanks!!

I don't know if there is reference or not... I was just thinking that it can be done like that.