noun
alcohol content; alcoholic strength
Refers to the proportion or amount of alcohol in a beverage, food, or other product. Commonly used on labels and in nutritional information.
このビールはアルコール分が5%です。
This beer has an alcohol content of 5%.
アルコール分の高いお酒は苦手です。
I don't handle drinks with high alcohol content well.
アルコール度数 is more technical and specifically refers to the alcohol percentage by volume, while アルコール分 is a broader term for alcohol content.
Compound of アルコール (alcohol, from English) and 分 (ぶん, portion or content).