In my lab manual, it is given that alcoholic KOH should be the base used in carbylamine test. However as it was not available, I used 10℅ NaOH. The test results came out positive. (Yes, it was actually a 1° amine) Is there any reason to prefer alcoholic KOH over NaOH?
My memory tells me that KOH is more soluble in ethanol than NaOH. The chemistry is the same, just more efficient at the higher concentration.