Preparation of Methyl Orange
Methyl Orange is generally found in powdered form. To make a solution of methyl orange we have to dissolve 0.1g of methyl orange powder in per 100cc of distilled water. However, the methyl orange solution which is for indicator is more sensitive and hence prepared by dissolving only 0.02 gram of methyl orange in 100cc of water
Preparation of Methyl Orange with Sulphanilic Acid
To produce methyl orange from sulfanilic acid and N, N -dimethylaniline, a reaction named diazonium coupling reaction was used. Diazonium coupling reaction is a typical reaction for treating an aliphatic amine to yield a carbocation.
At first, in presence of HCl, sulphanilic acid and sodium nitrate react and Then the prepared diazotized sulfanilic acid is treated with N, N-dimethyl aniline to get the desired product that is methyl orange.
Preparation of methyl orange from sulfanilic acid is can be understood from the chemical reactions below:
Methyl Orange
Methyl Orange is an azo dye which is soluble in water. It is an organic compound composed of carbon, hydrogen, nitrogen, sodium, oxygen and sulphur. Methyl Orange doesn’t react permanently with acids or bases. Its effective pH value ranges from pH 3.1 to pH 4.4. Methyl orange is not similar to litmus paper because methyl orange has a very low range compared to litmus. Methyl orange doesn’t have a full spectrum of colors.
Table of Content
- What is Methyl Orange?
- Structure of Methyl Orange
- General Properties of Methyl Orange
- Preparation of Methyl Orange
- Methyl Orange Indicator
- Difference between Phenolphthalein and Methyl Orange
- Applications of Methyl Orange