UNISURF SMES (SODIUM MYRETH SULFATE)
General Overview
UNISURF SMES is a high-purity, ethoxylated anionic surfactant based on Sodium Myreth Sulfate, known for its excellent cleansing, mildness, and foaming performance. It is widely used in personal care formulations where a balance of performance and skin compatibility is essential, such as in shampoos, liquid soaps, and facial cleansers. Derived from myristyl alcohol with ethoxylation (typically 2-3 EO), it is suitable for sulfate-based yet mild and biodegradable formulations.
Product Properties
| Property | Description |
|---|---|
| Chemical Name | Sodium Myreth Sulfate |
| Molecular Formula | CH3(CH2)n(OCH2CH2)xOSO3Na (EO = 2-3) |
| Molecular Weight | Varies depending on EO degree |
| CAS Number | 7631-99-4 / 11121-04-3 |
| Appearance | Clear to slightly yellow viscous liquid |
| Ionic Character | Anionic |
| Solubility | Soluble in water |
| Active Substance (%) | Typically 25% – 28% |
| pH (1% Solution) | 6.0 – 8.5 |
| Biodegradability | Readily biodegradable |
Technical Specifications
| Parameter | Value |
| Density (20°C) | 1.02 – 1.06 g/cm³ |
| Viscosity (25°C) | 300 – 800 mPa.s |
| Foam Performance | High, stable foam |
| Shelf Life | Minimum 12 months |
| Storage | 5°C – 40°C |
Application Areas
| Industry | Examples | Function |
| Personal Care | Shampoos, body washes, facial cleansers | Mild primary surfactant, foaming agent |
| Baby Care | Head-to-toe washes, baby shampoos | Ultra-mild, gentle cleansing |
| Cosmetics | Liquid soaps, shaving creams | Creamy foam generator, mild cleanser |
Advantages
Mild cleansing with good foaming capability
Ethoxylated structure improves skin compatibility
Biodegradable and derived from natural fatty alcohols
Stable across a wide pH and electrolyte range
Compatible with other surfactant types (anionic, non-ionic, amphoteric)
Packaging & Storage
| Feature | Specification |
| Packaging Options | 200 kg drums / 1000 kg IBCs |
| Shelf Life | Minimum 12 months |
| Storage Conditions | Store in a cool, dry place |
| Transport Classification | Non-hazardous liquid |
Safety & Handling
Use standard protective gloves and goggles during handling
Avoid prolonged skin and eye contact
Rinse thoroughly with water in case of contact
Ensure containers are properly sealed and protected from sunlight
Conclusion
UNISURF SMES is a preferred surfactant in personal care formulations for its gentle yet effective cleansing and foaming action. It offers formulators a balance of mildness, performance, and environmental safety.
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