According to the technical data from Guoli Chemical, the usage and addition amount of emulsifier SG-100 depend on the specific application field. The Guoli Chemical product database has not yet included specific recommended addition amounts for various fields, so it is usually necessary to determine the optimal dosage through small-scale trials. The following is a detailed usage guide based on its product characteristics and general industry experience:
### 1. Product Properties and Dispersion Key Points
Emulsifier SG-100 (PEG-100 Stearate) is a **white to slightly yellowish waxy solid** at room temperature, with a melting point of **50–55°C**. Therefore, it typically needs to be **heated to melt** before mixing with the oil phase for emulsification, which is different from liquid emulsifiers that can be directly added cold.
### 2. Usage Recommendations by Application Field
| Application Field | Functional Role | Recommended Usage Method and Reference Addition Amount |
| :--- | :--- | :--- |
| **Cosmetics** | O/W emulsifier, solubilizer | Used as primary emulsifier or co-emulsifier. Heat to 60–65°C to melt, mix evenly with oil-phase ingredients as the oil phase. Heat the water phase to a similar temperature, then add the oil phase to the water phase and homogenize for emulsification.
**Creams/Lotions: 1.0% – 3.0%**
**Sunscreen Products: 1.5% – 4.0%** |
| **Textile Industry** | Softener, antistatic agent | Can be used alone or compounded with other auxiliaries. When used alone, it is usually first prepared into a 5-10% emulsion, then applied in padding or dipping processes for fabrics.
**Padding method: 10 – 30 g/L (working solution)** |
| **Plastics Industry** | Internal lubricant, antistatic agent | Can be added directly during the mixing stage. Its good thermal stability allows it to function effectively at processing temperatures.
**0.3% – 1.0% of total resin amount** |
| **Pesticide Formulations** | Emulsifier | Used in combination with other anionic/nonionic emulsifiers to optimize the stability of emulsifiable concentrates or aqueous emulsions. After heating, dissolve into the oil phase of the pesticide technical concentrate.
**3% – 8% of total emulsifiable concentrate/aqueous emulsion** |
### 3. Operational Recommendations
- **System pH**: SG-100 is a nonionic surfactant, exhibiting excellent stability in **acidic, alkaline, and hard water** environments, with wide applicability.
- **Synergistic Compounding**: When used alone, its emulsifying power is mild. It is often compounded with low-HLB emulsifiers (e.g., SG-6, Stearic acid polyoxyethylene (6) ether) to obtain a denser and more stable cream or emulsion.
- **Preliminary Experiments**: The above addition amounts are general industry experience values. Due to differences in formulation systems, **it is strongly recommended to conduct small-scale trials to determine the optimal addition amount that meets stability requirements and cost-effectiveness before large-scale production.**
### 4. Safety and Storage Precautions
- **Storage**: Store sealed in a cool, dry, well-ventilated place. Recommended storage temperature **5–40°C**, avoid direct sunlight.
- **Protection**: The product has very low skin irritation, but it is still recommended to follow standard chemical handling procedures, wear protective gloves and goggles, especially when handling hot molten materials to prevent burns.
- **Cleanup**: In case of spillage, allow to cool and solidify, then shovel into a container. Residues can be cleaned with hot water and detergent.
