In comparison with other stearic acid polyoxyethylene ether homologues from Guoli Chemical (such as SG-6, SG-9, and SG-40), the greatest advantage of SG-10 lies in the optimal hydrophilic-lipophilic balance (HLB value 13.5) constructed by its ethylene oxide addition number (n≈10). Compared to SG-6 (n≈6), which is more lipophilic and mainly suitable for W/O systems, SG-10 can more efficiently reduce interfacial tension and form stable, fine O/W emulsions. In contrast to SG-40 (n≈40), which is overly hydrophilic, SG-10 is less likely to cause over-emulsification in emulsion polymerization or metalworking fluids, allowing for more precise control of micelle structure and particle size distribution.
From the perspective of product form and process convenience, SG-10 appears as a white to slightly yellow paste or solid (melting point 35-40°C). Compared to the flake\/block forms of SG-6 and SG-9, its paste form is easier to handle and dissolves faster, dispersing more quickly in hot water or oil phase, thereby shortening the downstream production cycle. Additionally, SG-10's low-foaming property (no need for additional defoamers), extremely low acid value (≤2 mgKOH\/g), and iodine value (≤2 gI₂\/100g) endow it with excellent chemical stability and freeze-thaw stability, making it less prone to rancidity during long-term storage and transportation, which is especially important in cosmetic cream formulations.
In terms of safety and environmental compliance, SG-10 also stands out. Its 5% aqueous solution has a skin irritation index (PII) of only 0–0.5, which is essentially classified as non-irritating. Coupled with its extremely low acute oral toxicity (LD50 > 5000 mg\/kg), freedom from heavy metals and phosphorus, it fully complies with international mainstream cosmetic restricted substance requirements. Combined with its readily biodegradable nature (OECD 301B 28-day degradation rate >60%), SG-10 is a benchmark product in the Guoli Chemical series that simultaneously achieves “high-performance emulsification” and “green safety,” making it especially suitable for personal care and household detergent markets that demand high raw material mildness and environmental footprint.
| Parameter | SG-10 (Guoli Chemical) | Advantages over similar SG series |
|---|---|---|
| Appearance | White to slightly yellow paste\/solid | Easier to take out and faster to dissolve than flaky SG-6\/SG-9 |
| HLB value | 13.5 | Most balanced O\/W emulsifying performance among similar products, widest applicability |
| Cloud point (1% aqueous solution) | 45-55°C | Moderate cloud point, stable emulsification over a wide temperature range |
| Active content | ≥99% | High purity, no excess fillers |
| pH (1% aqueous solution) | 5.0-7.0 | Near neutral, minimal pH interference to formulation systems |
| Acid value | ≤2 mgKOH\/g | Very low acid value, excellent chemical stability, not prone to rancidity |
| Iodine value | ≤2 gI₂\/100g | Very high saturation, strong antioxidant capacity |
| Skin irritation (5% dilution) | Non-irritating (PII 0-0.5) | Represents industry-leading mildness and safety |
| Monoester content | ≥95% | Higher monoester content indicates purer O\/W emulsifying ability |
Due to its balanced HLB value (13.5), SG-10 is especially suitable as the primary emulsifier for O\/W creams, lotions, pesticide emulsifiable concentrates, and metalworking fluids. In practical formulation design, the recommended dosage is typically 5%–20% of the oil phase mass. For polymer emulsion synthesis requiring higher low-temperature stability, SG-10 can effectively control particle size distribution; when used as a leveling agent or soaping agent in textile printing and dyeing, its low-foaming property prevents dye overflow and imparts a smooth handfeel to the fabric. Note that for highly polar or ultra-long-chain oils, it can be compounded with a small amount of more hydrophilic surfactant to achieve better emulsification results.