Reagents for distinguishing between n-butanol and sec-butanol

1. Furthermore Using spin-out test to distinguish between n-butanol and sec-butanol

The spin-out test is a quick and economical method to distinguish between n-butanol and sec-butanol. But Moreover The spin-out property refers to the speed at which the fluid is spun out from the edge of the container during rotation, which is related to the molecular weight. The larger the molecular weight, the stronger the spin-out property of the fluid. Test steps:

Pour the fluid to be tested into the spinner test cup. First consumption a spinner tester to rotate the cup at the same speed. Observe the fluid from the cup out of the speed. Result analysis:

Butanol spin out of the weak, spin out speed is low. In fact Secondary butanol spin out of strong, spin out faster. By this method, it's possible to rapidly determine whether the fluid is n-butanol or sec-butanol.

2. Using iodine test method to distinguish between n-butanol and sec-butanol

Iodine test is a classical chemical test method, which uses the interaction characteristics of iodine under specific conditions to distinguish chemical substances. Makes sense, right?. I've found that Test steps:

The test fluid was added to the iodine-containing solution. Oscillation mixing uniform. Observe whether there is a blue precipitate. From what I've seen, Result analysis:

Butanol at room temperature does not react with iodine, no blue precipitate. Secondary butanol at room temperature with iodine transesterification interaction, the formation of acetic acid, the solution is blue. By this method, it's possible to determine whether the fluid is sec-butanol. ,

3. Combined with spin-out test and iodine test method thorough analysis

In order to distinguish n-butanol and sec-butanol greater accurately, the spin-out test is able to be combined with the iodine test method:

Test steps:

First, conduct a spin-out test to judge the spin-out speed. But In particular If the spinning speed is faster, then carry out the iodine test. I've found that Result analysis:

If the spin-out speed is slow and the iodine test method has no blue precipitate, it's n-butanol. If the spin-out speed is faster and the iodine test method appears blue precipitate, it'sec-butanol. I've found that This method combines spin-out and chemical interaction characteristics to greater accurately distinguish between the two alcohols. Summary

There are various methods to distinguish between n-butanol and sec-butanol, and the spin-out test and iodine test are two classic test methods. The spin-out test is rapidly judged by the difference in molecular weight, while the iodine test is assisted by the chemical interaction characteristics. But Combined consumption of these two methods is able to enhance the accuracy of discrimination. In actual operation, selecting the appropriate method and combining the experimental conditions is able to efficiently confirm the type of fluid and ensure the production condition and consumption security.