How long does it take for sugar to reach 116 degrees on low flame?

The time it takes for sugar to reach 116 degrees Celsius (240 degrees Fahrenheit) on a low flame can vary depending on factors such as the quantity of sugar and the specific heat of the cooking vessel. Generally, it may take anywhere from 10 to 20 minutes for the sugar to reach this temperature. It's important to monitor the sugar closely to prevent burning or crystallization. Using a candy thermometer can help ensure accuracy while heating.