Methyl stearate is an ester organic compound, also known as methyl octadecanoate. It is a monoalkyl ester formed from long-chain fatty acids. It is a colorless or slightly yellow transparent oily liquid to semi-solid at room temperature, with excellent permeability, thermal stability and antistatic properties. Melting point 37~39℃, density 0.84g/cm3, insoluble in water, soluble in methanol, ethanol, DMSO and other organic solvents.
Methyl stearate can be used to prepare these additives:
1. Preparation of eluent for polycyclic aromatic hydrocarbons
12wt% methyl palmitate, 53wt% methyl linoleate, 30wt % methyl oleate and methyl linolenate, 5wt% methyl stearate, an eluent can be prepared, which can remove polycyclic aromatic hydrocarbon pollutants in the soil, and the total amount of PAHs in the soil can be passed through once Elution can be reduced from 996.84mg/kg to 645.19mg/kg, and the removal rate can reach 35.28%.
2. Preparation of emulsifier
Methyl stearate is the preparation emulsifier Raw materials, such as the preparation of sucrose emulsifier, use methyl stearate, methyl oleate, and methyl palmitate as fatty acid esters, which react directly with sucrose under ordinary conditions to generate fatty acid sucrose esters with high esterification degree and emulsification. Strong capabilities and stable performance.
3. Prepare surfactant
Combine methyl stearate and catalyst The low carbon monohydric alcohol solution (methanol) is reacted through the sodium glycinate bed in the packed bed reactor under autoclaved conditions to prepare sodium stearoyl amino acid. The content of sodium stearoyl amino acid in the reaction product is 93.6%. This method has good economy, no corrosion in the process, low pollution, and is environmentally friendly. It is a clean production process that replaces the traditional Shotton-Bowman synthesis method.
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