Question about washing product

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In summary, in most procedures for inorganic/organic synthesis, after filtering the product, it is suggested to wash it with small amounts of methanol and ethyl ether. This is done in order to purify the product and maximize yields. These solvents are often used because they are good at dissolving organic compounds and are easy to evaporate off. They also aid in identifying the product through techniques like NMR and LC/MS. Other solvents such as ethyl acetate or DCM can also be used for this purpose.
  • #1
Shadowz
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I read many procedure for inorganic/organic synthesis, and see that most often after filtering the product, they suggest to wash them with small amount of methanol and ethyl ether.

Why do we have to use those 2 solvents to wash our products?
 
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  • #2
Shadowz said:
I read many procedure for inorganic/organic synthesis, and see that most often after filtering the product, they suggest to wash them with small amount of methanol and ethyl ether.

Why do we have to use those 2 solvents to wash our products?

you wash your products with solvents that they are not soluble in in order to purify them. on the other hand, if you are filtering out stuff you don't want, you wash what you filter off with a solvent that will dissolve your desired product in order maximize your yields. methanol and ether are excellent solvents a lot of times for organic sythesis.
 
  • #3
That's the basic idea. But I wonder why it has to be methanol and dimethyl ether, but not other organic solvents.
 
  • #4
Shadowz said:
I read many procedure for inorganic/organic synthesis, and see that most often after filtering the product, they suggest to wash them with small amount of methanol and ethyl ether.

Why do we have to use those 2 solvents to wash our products?
Which compound description do you mean? Inorganic, or Organic? Maybe some inorganic compounds are fairly insoluble in methanol or ethyl ether. Best guess is that many or most organic compound may be soluble in methanol or ethyl ether; salts are likely insoluble in the organic solvents (is this a bad assumption?)
 
  • #5
symbolipoint said:
Which compound description do you mean? Inorganic, or Organic? Maybe some inorganic compounds are fairly insoluble in methanol or ethyl ether. Best guess is that many or most organic compound may be soluble in methanol or ethyl ether; salts are likely insoluble in the organic solvents (is this a bad assumption?)

No. That is a good assumption. A lot of inorganic impurities can be removed from a filtering+organic solvent wash. Methanol and ether are excellent solvents for organic compounds a lot of times.


That's the basic idea. But I wonder why it has to be methanol and dimethyl ether, but not other organic solvents.



It doesn't have to be strictly methanol or ether. You could use solvents like ethyl acetate or DCM as well. Methanol and ether are used a lot of times because they are easy to evaporate off and dissolve a lot of organic compounds. Methanol and ether are also extremely easy to spot by NMR and also don't show up on things like the UV spectra in a LC/MS which makes identification of what you have much easier.
 

1. What are the ingredients in this washing product?

The ingredients in this washing product may vary depending on the specific brand and type. However, common ingredients found in washing products include surfactants, enzymes, fragrance, and preservatives. It is important to carefully read the label and check for any potential allergens before using the product.

2. Can this washing product be used for all types of clothing?

Most washing products are suitable for use on all types of clothing, including delicates and activewear. However, it is always best to check the label or do a patch test on a small area of fabric before using the product on all of your clothing.

3. Is this washing product safe for the environment?

Many washing products claim to be environmentally friendly, but it is important to do your research and look for specific certifications such as the EPA Safer Choice label or USDA Organic label. These indicate that the product has been tested and approved for safe use and minimal impact on the environment.

4. How much of this washing product should I use per load?

The recommended amount of washing product to use per load will vary depending on the brand and type of product. It is important to follow the instructions on the label and not use more than the recommended amount, as this can lead to excess suds and potential damage to your washing machine.

5. Can this washing product be used in cold water?

Many washing products are designed to work effectively in cold water, which can help save on energy costs. However, some products may specify a temperature range for optimal performance. It is best to check the label or product information to determine whether the product is suitable for use in cold water.

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