I'm currently working on making some biodiesel just to see how difficult it is, and also trying to figure out the cost effectiveness of making it at home in comparison to the cost of diesel fuel right now. Well, I used Red Devil Drain Cleaner (NaOH) and ACS Grade Methanol with the Kroger brand Vegetable oil (made from soybean oil). My final product after mixing the methoxide and adding it to the oil, then shaking vigorously, was light yellow colored, as opposed to a chocolate milk color that was supposed to be present after mixed. I've followed the directions to a "T", but for some reason there seems to be a difference. Perhaps it's the soybean oil?
I even blow-dried the mixing container I was using to avoid any type of hydration of the product.
The glycerin and biodiesel have separated, but the glycerin layer is clear and the biodiesel layer a misty yellow. I was under the impression the biodiesel should be a clear yellow and the glycerin a dark brown.
Where else could I have gone wrong in the process?