Yes, butter is slightly acidic.
While not strongly acidic like lemon juice or vinegar, butter typically has a mild acidity. This acidity is due to the presence of fatty acids. An average acidity level in butter is around 0.14%, although this can vary depending on factors such as the milk quality, processing methods, and storage conditions. The casein, which is acrid, and the fat itself contribute to the acidic nature of butter.
In summary, butter possesses a low level of acidity.
