Clear Gel Wax for Candles in Containers – Kerax Keragel 6066
Keragel 6066 is a high-quality clear gel formulated by Kerax (United Kingdom), specifically designed for pouring clear candles into glass containers (glasses, jars, decorative vases). At room temperature, it is a clear, virtually colorless solid (maximum value of 30 on the Saybolt color scale) with minimal odor. It is a complex blend of polymers and fully refined oils, free of animal-derived products, requiring no additives other than fragrance and dye. With a viscosity of 300 cSt at 100°C (more than 30 times higher than that of vegetable wax), the gel offers a spectacular appearance, with its own specific technical process: pouring at high temperatures and careful selection of fragrance and wick.
A clear solid with maximum purity (Saybolt 30), formulated for glass candles with an exceptional crystalline appearance.
A stable polymeric formula that allows decorations to be held in place within the container, requiring hot pouring for optimal deaeration.
Requires no stabilizing additives. Compatible with nonpolar fragrances (5–8%) and liquid/powder dyes that preserve transparency.
Technical Guide for Designers
- Preparing Containers: Glass containers must be clean and dry, at least at room temperature. Preheating the jars to 45–50°C improves adhesion and the final appearance of the gel in the glass.
- Choosing the Wick: Gel typically requires thicker wicks than traditional container wax. A wick that is too thin will tunnel and keep the flame small, while one that is too thick will produce soot and burn too quickly. Trim the wick to 6 mm before each lighting and perform a burn test after 48 hours.
- Color Integration: Use liquid dyes or mica powder; add them at approximately 95°C, stirring until completely dissolved. For deeper shades, add a drop of black dye. Caution: Use mica powder sparingly, as large amounts can clog the wick and reduce transparency.
- Fragrance Incorporation: Recommended dosage: 5–8%. Use only nonpolar oils with a flash point of at least 77°C (see Section 9 of the fragrance’s SDS). Avoid oils below this threshold or polar oils, which can cause oil leakage on the surface, an unsightly finish, or a weak flame. Add the fragrance and mix thoroughly just before pouring.
- Melting, Pouring, and Cooling: Melt the gel in stainless steel containers (avoid copper and zinc, which accelerate discoloration). Heating to 120°C is permitted only temporarily with rapid cooling; prolonged heating may cause the gel to yellow. Pour at 105–110°C for maximum clarity. Pouring at higher temperatures provides superior clarity but may cause bubbles at the wick, while pouring at lower temperatures thickens the gel and traps bubbles from the pour. Cool the undisturbed container to room temperature (~25°C).
Temperatures and Working Conditions
| Melting Point / Max. Heating | 65–75°C / Up to 120°C (only temporarily, with rapid cooling) |
| Viscosity at 100°C | 250–350 cSt (typically 300 cSt / Lot 793099: 301.77 cSt) |
| Dye Addition Temperature | ~95 °C (liquid / powder completely dissolved) |
| Pouring Temperature | 105–110 °C (adjustable in 5–10°C increments as needed) |
| Concentration & Conditions for Fragrance | 5%–8% (nonpolar oils, flash point ≥ 77 °C) |
| Container Preheating Temperature | 45–50 °C (optional, for optimal appearance in glass) |
Quality, Specifications, and Storage
| Specification | Details / Compliance (Keragel 6066) |
|---|---|
| Manufacturer and Origin | Kerax Ltd, United Kingdom (UK). Free of animal-derived ingredients. Certificate of analysis provided per batch. |
| Appearance, Color, and Odor | Transparent solid at room temperature. Saybolt color min. 25 (typically 30—maximum on the scale, colorless). Minimal odor. |
| Safety & Flammability | Flash point above 150°C; Auto-ignition above 200°C. Not classified as hazardous under CLP (the primary risk is burns from hot gel). |
| Remelting and Reuse | Scrap can be remelted at a maximum of 85°C, without prolonged exposure to the heat source. |
| Storage Conditions | Store in a closed container, preferably between 5 and 39°C, away from heat sources and ignition sources. |
Pro Tip: Recipe Testing and Curing
The gel is not a typical wax: it is poured hot (above 100°C) and does not tolerate movement of the bottle before cooling. The result should not be evaluated immediately after pouring, but only after the container has stood undisturbed for 48 hours prior to burn testing. Since the fragrance’s polarity is not specified in the data sheets, always produce a test batch using a small formula before mass production, noting the pouring temperature, batch number, wick, and container used.
Troubleshooting Guide (Common Problems)
| Problem | Probable Cause | Recommended Solution |
|---|---|---|
| Air bubbles around the wick | Pouring at too high a temperature (105–110°C). | Reduce the casting temperature in 5–10°C increments until you find the optimal balance for your container. |
| Air bubbles trapped throughout the gel | Pouring at too low a temperature; the gel set too quickly. | Increase the pouring temperature to 105–110°C and preheat the glass containers to 45–50°C. |
| Oil leaks / Unsightly finish | Polar fragrance or one with a flash point below 77°C. | Use only nonpolar oils with a flash point ≥ 77°C (dosage 5–8%). Avoid incompatible fragrances. |
| Yellowing or discoloration of the gel | Prolonged heating, temperatures exceeding 120°C, or copper/zinc containers. | Use only stainless steel containers, avoid prolonged exposure to high temperatures, and cool rapidly. When remelting, do not exceed 85°C. |
| Clogged wick / Poor burning | Excess mica or an undersized wick. | Reduce the amount of mica (use a small amount) and choose a wick size larger than that used for regular wax. |
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