Hi to everyone I am a beginner who want to learn chemistry
I want to do some synthesis project
And I need for that Methylamine solution 40% in water
I can get only Methylamine hcl .
So I thought that maybe I can make myself a solution.
I can’t find recipe online so i ask here .
MethylaminePreparation of the maximum pure 40% methylamine solution from methylamine hydrochloride can be carried out as follows:
Materials:
- Methylamine hydrochloride (about 160 g)
- Distilled water (about 240 ml)
- Glass flask with a volume of about 500 ml
- Magnetic stirrer
- Thermometer
- Unloading crane
- Glass pipette
Steps:
1. Prepare 240 ml of distilled water in a glass flask with a volume of about 500 ml.
2. Put methylamine hydrochloride in a flask of water.
3. Place the flask on the magnetic stirrer and start stirring.
4. Preheat the mixture to a temperature of 50-60°C, using a thermometer to control the temperature.
5. Continue heating and stirring until the methylamine hydrochloride is completely dissolved.
6. Bring the volume of the solution to 400 ml, adding distilled water, if necessary.
7. Cool the mixture to room temperature while continuing to stir.
8. Adjust the pH to a value of 10-11 using a 10% NaOH solution.
9. Check the concentration of methylamine in the solution using test strips or another method, and, if necessary, adjust the concentration by adding either water or methylamine hydrochloride.
10. Leave the mixture for a few hours or overnight so that all impurities settle to the bottom of the flask.
11. Filter the solution through a filter to remove any remaining impurities.
12. Ready-made methylamine 40% solution can be used in appropriate applications.
Please note that when using any chemicals, appropriate safety measures must be observed, including but not limited to: work in a well-ventilated area, use protective clothing and gloves.