Sodium Hydroxide Solution 0.1 N (0.1M) in Methanol 1L

SKU : I-9082.1000
CAS : 1310-73-2 (mixture)
Formula : NaOH in Methanol
Grade : Standard Solution

Common Applications

  • Titration of Weak Organic Acids: Used to determine the acid value in fats, oils, and resins that do not dissolve in water.

  • Pharmaceutical Analysis: Many drug compounds are hydrophobic; methanol-based titrants allow for precise quantification of these active ingredients.

  • Biodiesel Production: Used as a reagent or catalyst in transesterification processes on a laboratory scale.

  • Standardization: It is often standardized against primary standards like Benzoic Acid to ensure its exact normality before use in analytical procedures.

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Sodium Hydroxide ($NaOH$) 0.1 N in Methanol is a specialized volumetric solution used primarily for non-aqueous titrations. In this preparation, sodium hydroxide is dissolved in anhydrous methanol rather than water to achieve a concentration of 0.1 Normal (which, for NaOH, is equivalent to 0.1 Molar). Methanol (CH3OH) acts as the carrier. Because methanol is an alcohol, it allows for the titration of organic acids and compounds that are poorly soluble in water or would undergo unwanted side reactions (like hydrolysis) in an aqueous environment. This solution is highly sensitive to atmospheric carbon dioxide (CO2), which reacts to form sodium carbonate precipitates, and moisture, which can alter its “non-aqueous” properties.
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