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Введение в продукт
| Parameter Category | Parameter Name | English Value/Specification |
|---|---|---|
| Basic Identification | Chemical Name | 2-Ethylhexyl glycerol; 1,2,3-Propanetriol 1-(2-ethylhexyl) ether; Ethylhexyl Glycerin |
| Abbreviation/INCI Name | EHG; Ethylhexyl Glycerin (INCI); Octoxyglycerin | |
| CAS Registry Number | 70445-33-9 | |
| EINECS/EC Number | 274-626-3 | |
| Molecular Formula | C₁₁H₂₄O₄ | |
| Molecular Weight | 208.31 g/mol | |
| Chemical Class | Alkyl glycerol ether; preservative synergist; humectant; cosmetic functional ingredient | |
| Physicochemical Properties | Appearance | Clear, colorless to pale yellow viscous liquid; odorless or with a faint mild hydrocarbon odor |
| Melting Point | -15 to -10 °C (liquid at room temperature) | |
| Boiling Point | 265–270 °C (lit.); decomposes slightly above 270 °C | |
| Density (20 °C) | 1.000–1.010 g/cm³ | |
| Water Solubility (25 °C) | Slightly soluble (~0.5 g/100 mL); miscible with propylene glycol, glycerin, and most cosmetic oils/solvents | |
| Organic Solvent Solubility | Fully miscible with ethanol, isopropanol, mineral oil, silicone oils, and esters; compatible with non-polar/polar cosmetic excipients | |
| pH Value (5% Aqueous Dispersion) | 5.5–7.5 (neutral range, no pH impact on formulations) | |
| LogP (Octanol-Water Partition Coefficient) | 3.2–3.5 (balanced lipophilic-hydrophilic property, favorable for skin penetration) | |
| Stability | Stable at pH 3.0–10.0 (suitable for all cosmetic systems); UV-stable; non-hygroscopic; no hydrolysis under normal conditions | |
| Biological Activity | Core Functions | Preservative synergist (enhances efficacy of phenoxyethanol/parabens/IPBC); humectant; skin soothing agent; deodorant (inhibits malodor-causing bacteria) |
| Mechanism of Action (Synergist) | Disrupts microbial cell membrane integrity, reduces surface tension to improve penetration of other preservatives; lowers MIC of co-preservatives by 30–50% | |
| Effective Concentration Range | 0.1–1.0% (cosmetic/personal care; synergist); 0.5–2.0% (humectant/soothing agent); 0.2–0.8% (deodorant) | |
| Antimicrobial Spectrum (alone) | Weak bacteriostatic activity against Gram-positive bacteria; no independent antifungal/mold activity (requires pairing with main preservatives) |
