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In chemical experiments, methyl red indicator is widely used to indicate the end point of acid-base neutralization reaction. The correct configuration of methyl red indicator is an important part to ensure the accuracy and safety of the experiment. The following is the methyl red indicator configuration note, I hope it can help you.
1. Select the appropriate solvent
methyl red indicator is usually dissolved in alcohol or ethanol. When configuring the indicator, choose high-purity industrial-grade alcohol or ethanol, and ensure that the solvent is free of impurities. At the same time, the use of water as a solvent should be avoided so as not to affect the color change of the indicator.
2. Precautions for configuring concentration
Under normal circumstances, the concentration of methyl red indicator is about 0.1%. When preparing the indicator, it should be diluted according to actual needs, and diluted in strict accordance with the formula ratio to avoid exceeding or falling below the recommend concentration range.
3. to prevent damp
methyl red indicator in a humid environment is easy to moisture absorption discoloration, affecting the use effect. When configuring the indicator, a well-sealed container should be selected and stored in a dry and ventilated environment to avoid being affected by moisture.
4. pay attention to safety protection
in the configuration of methyl red indicator, should wear personal protective equipment, such as gloves, goggles, etc., to avoid contact with skin and eyes, so as not to cause unnecessary damage.
5. Timely cleaning dust
in the use of methyl red indicator, easy to produce dust. In order to avoid the influence of dust on the experimental results, the experimental table and container should be cleaned in time.
6. Precautions for storage The
configured methyl red indicator should be sealed and stored in a cool and dry place, avoiding direct sunlight and high temperature environment.
The above is about the precautions for the configuration of the methyl red indicator, hoping to help you use chemical reagents safely in the laboratory.
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