How to calculate the pouring temperature of NatureWax® C-3 wax

Correct pouring temperature is key to creating perfect candles from NatureWax® C-3 soy wax. It affects the appearance, even cooling, and scent throw. In this article, we'll explore how to calculate the optimal pouring temperature based on room conditions. Note that different sources may provide slightly different recommendations for temperatures — this is due to variations in wax properties, container types, fragrance oils, and even humidity or room temperature. Therefore, the data provided should be considered as a reference point, and ideal parameters should be determined experimentally for each batch.

85°C
80°C
80°C
from the chart

Step-by-step instructions from Cargill

Heat the wax pieces to a temperature of 85°C. This is the optimal heating temperature, which ensures even and beautiful candles.

If you are using a fragrance oil, Cargill recommends a fragrance load of 6% to 9% of the wax weight. For more intense fragrances, choose a value closer to the upper limit of this range. Pour the fragrance oil into a mixing container, gradually adding the heated wax. Mix during the process to ensure the fragrance fully combines with the wax. For small batches of candles, this may take about 5 minutes.

If you are not achieving the desired appearance of the wax, try reducing the amount of fragrance and test different proportions. You can also change the mixing time.

Remember — it's an art, not a science!

Choosing the right wick is very important — it affects the burn time, flame height, and fragrance throw. There are many different types of wicks. When choosing, consider the candle diameter, presence of fragrance, and type of wax. Test different options until you find the ideal one for your candles.

Place the containers in a warm water bath so they warm up slightly — but not overheated. This helps prevent cracks and separation of the wax during cooling.

Temperature is important: the ideal pouring temperature depends on the room temperature. Here are some approximate recommendations:

Room temperature 21–27°C: pour at 68–77°C

Room temperature 27–32°C: reduce the pouring temperature by 2–5°C

Room temperature 16–21°C: increase the pouring temperature by 2–5°C

Consider candle size: larger candles cool more slowly, so adjust the pouring temperature accordingly. For example, for a candle with a diameter of 10cm — pour at 68°C, for a 7.5cm candle — at 71°C.

Humidity: if you cannot control humidity in your workspace, during testing change the pouring temperature to find the optimal result. Change the temperature gradually — by 2–5°C — and observe the results.

Candles usually need at least 12 hours to cool properly. Place the containers at least 5 cm apart from each other to ensure even cooling. It's also important that the temperature and humidity in the room don't change during the process. Too rapid or slow cooling can affect the appearance of the wax.

Temperature dependence from Cargill video

In this chart, the dependence of the wax pouring temperature on the room temperature is shown, according to Cargill's video recommendations. The video demonstrates how optimal temperatures change at different room temperatures and illustrates the rules for adjusting the pouring temperature. Using these data, I created a visualization that allows you to see the patterns and easily select an appropriate temperature regime for your case.

Instruction for working with NatureWax™ C-3 and C-6 wax

* Data is generalized from official instructions for using NatureWax™ C-3 and C-6 for container candles (Cargill).

Heat the wax to a temperature of 71–93 °C, constantly stirring. Do not overheat above 93 °C to avoid discoloration.

Other additives (except for fragrance and colorant) can be added at any stage of melting.

Add fragrance and colorant when the wax is fully melted, thoroughly mixing for even distribution.
  • Recommended fragrance amount: up to 6%.
  • With special additives, 7–10% fragrance can be used.
  • Liquid and powder colorants are suitable.

After fully melting, cool the wax to 49–74 °C. This reduces the risk of cracking and color changes.

Before pouring, preheat the glass container to room temperature. Optimal pouring temperature depends on the room temperature:
  • at 16–21 °C → 77–82 °C,
  • at 21–27 °C → 71–77 °C,
  • at 27–32 °C → 63–68 °C.
If the wax is stored in a melting pot overnight, maintain the temperature at 54–63 °C.

Candles should be cooled for at least 12 hours before the first lighting. This ensures complete crystal formation and a good appearance.

  • For candles with a diameter over 9 cm, it is recommended to use two wicks.
  • Wax works well with different types of colorants.