Analytical methods for solid sodium methoxide
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Dear colleagues in the chemical industry, does anyone know the analysis methods for solid sodium methoxide? Preferably those based on national or industry standards. Thank you all first! This post was last edited by hao21100112 on 2009-3-6 20:49]
Solid sodium methoxide 1. Molecular formula: NaOCH3 2. Molecular weight: 54.024 Parameter Name Parameter Packaging standards: Cardboard drum, 25 kg; Plastic drum, 25 kg; Galvanized drum, 100 kg Purity: 98–99% Free alkali: ≤1.5% 3. Uses: Primarily used in the organic synthesis of pharmaceuticals and pesticides; also used to some extent in the chemical industry, dyes, synthetic fibers, food, etc. 4. Main advantages: The process is reliable; the resulting solid sodium methoxide has a high content and a low level of free base, which reduces storage and transportation costs, shortens the production cycle for users, and eliminates numerous steps in the production process, thereby bringing significant economic and social benefits. It would be better if you contacted the manufacturer tomorrow; there might be industry standards or corporate standards
Our factory has the capability to analyze sodium methoxide! Just hydrolyze sodium methoxide and then titrate it with an acid standard!
I saw the standards in the methanol and downstream products section; they are on pages 11 to 15 of folder 1. Due to issues with the index posts, they have not yet been included in the index of the analysis section. Why don’t you take a look? I’ll help you look for it here too.
Take 0.1–0.15 g of solid sodium methoxide, dissolve it in 100 ml of water, and then titrate it with a sulfuric acid standard solution of C(1/2H2SO4) = 0.1 mol/L, using methyl red as an indicator; the endpoint is reached when the color changes from yellow to red. CH3ONa + H2O = CH3OH + NaOH NaOH + 1/2H2SO4 = 1/2Na2SO4 + H2O