Dodecanol_Laureth-12 L-23 (CAS: 68439-50-9) is a high-purity C12-C14 fatty alcohol product provided by Guoli Chemical, with an active content ≥99%, hydroxyl value approximately 290-305 mg KOH/g, and HLB value approximately 1.3. It is a typical hydrophobic long-chain fatty alcohol. Due to its melting point between 23~25°C, the product may appear as a white waxy solid or a colorless liquid at room temperature. If the product is solid before use, warm it gently in a water bath to 30~35°C to melt it into a liquid before use. Do not directly heat with open flames to avoid local overheating leading to quality degradation or fire risk.
The core usage methods of this product are divided into two categories: First, as a derivatization synthesis raw material, utilizing the high reactivity of its primary alcohol group to produce nonionic surfactants (such as laureth series AEO) via ethoxylation, or anionic surfactants (such as sodium lauryl sulfate SLS, sodium laureth sulfate SLES) via sulfation/sulfonation. These processes are typically carried out in specialized chemical synthesis equipment, requiring control of reaction temperature, molar ratio, and catalyst conditions. Second, as a direct formulation component, used as a co-emulsifier and thickener in creams and lotions. The recommended addition amount is 1%~5% of the total formula (specific amount needs to be determined through compatibility experiments). When using, first mix the dodecanol with the oil phase components and heat to 40~50°C to dissolve evenly, then homogenize with the water phase.
In industrial cleaning and textile/leather fields, dodecanol can be dissolved in organic solvents such as ethanol or ether and then used in compounding. Since the pure product has extremely low water solubility, when constructing water-based formulations, other surfactants need to be used for solubilization or emulsification. For precision cleaning applications, it can be used directly as an organic solvent or mixed with other solvents in proportion, utilizing its good solubility and balanced evaporation rate to remove grease-based contaminants.
| Parameter Item | Specification Index | Description |
|---|---|---|
| Appearance | Colorless liquid or white solid | Depends on ambient temperature (melting point 23~25°C) |
| Active Content | ≥99% | Very high purity, good batch consistency |
| Hydroxyl Value | Approximately 290-305 mg KOH/g | Characterizes reactivity, key parameter for calculating derivatization feed ratio |
| HLB Value | Approximately 1.3 | Strong hydrophobicity, suitable for W/O emulsification systems |
| Iodine Value | ≤1 | Very high saturation, good chemical stability |
| Acid Value | ≤0.5 mg KOH/g | Very low free acid |
| Moisture | ≤0.5% | — |
| Density | 0.82~0.84 g/cm³ | 25°C |
| Flash Point | ＞110°C (closed cup) | Keep away from open flames |
| Kinematic Viscosity | 12-15 mm²/s (25°C) | — |
| Refractive Index | 1.442-1.447 (20°C) | — |
| Surface Tension | Approximately 29.8 mN/m (25°C) | Exhibits some surface activity |
| Solubility | Easily soluble in organic solvents such as ethanol and ether | Very low water solubility |
| Heavy Metals | ≤10 mg/kg | — |
| Arsenic | ≤2 mg/kg | — |
| Packaging Specification | 50kg plastic drum / 200kg plastic drum / IBC tote | Guoli Chemical standard packaging |
1. Surfactant Synthesis: When using dodecanol as a starter to prepare AEO series nonionic surfactants via ethoxylation reaction with ethylene oxide, the reaction temperature is usually controlled at 130~180°C, using KOH or NaOH as catalyst, and the product HLB value is controlled by adjusting the EO addition moles. For SLS/SLES production, SO₃ film sulfonation or chlorosulfonic acid sulfation processes should be used, strictly controlling reaction temperature and molar ratio, followed by neutralization treatment after reaction.
2. Personal Care Formulations: As a co-emulsifier and thickener in O/W or W/O creams and lotions, the recommended dosage is 1%~5%. Operation steps: melt and mix dodecanol with the oil phase (e.g., mineral oil, silicone oil, fatty acid esters) at 40~50°C until uniform, simultaneously heat the water phase to the same temperature, slowly add the water phase to the oil phase or vice versa under stirring, homogenize, then cool to room temperature. Due to its HLB value of only about 1.3, it usually needs to be used with a main emulsifier of higher HLB value to obtain a stable emulsion.
3. Industrial Cleaning: Used directly as an organic solvent for degreasing cleaning of metal parts or electronic components, via immersion, spraying, or ultrasonic-assisted cleaning. When used in water-based cleaning formulations, it needs to be solubilized with nonionic surfactants (e.g., AEO-9, TX-10). The proportion of dodecanol in the concentrate formula is typically 3%~10%.
4. Textile and Leather Auxiliaries: When preparing softeners or fatliquoring agents, first melt the dodecanol at 60~70°C, mix with emulsifiers and mineral oil to form an oil phase premix, then add water for emulsification and dispersion. Dodecanol and its derivatives can effectively reduce the friction coefficient between fibers, improving fabric hand feel and leather softness.
5. Organic Synthesis Intermediates: For esterification reactions, dodecanol reacts with fatty acids or anhydrides under acid catalysis at 120~180°C. Water produced as a byproduct is removed via azeotropic distillation or vacuum to improve conversion. The resulting esters can be used in lubricants, plasticizers, or fragrances.