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    Hi, im doing an aspirin tlc for my ocr salters a2 chem coursework, and i was just wondering, does anyone know where I can find Rf values for salicylic acid and aspirin? Im desperate! Or does anybody just know them anyway..?
    Thanks
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    (Original post by Cinder5)
    Hi, im doing an aspirin tlc for my ocr salters a2 chem coursework, and i was just wondering, does anyone know where I can find Rf values for salicylic acid and aspirin? Im desperate! Or does anybody just know them anyway..?
    Thanks
    you could have done the chromatography on your original starting materials, too; i am sure if you attached the chromatogran on your writeup, comparing your product, with starting materials' values, it'd make a good impression, rather than just getting the values somewhere else.

    Getting the chromatogram is quite easy and takes no more than 20 minutes(usually), as you might have already found
 
 
 
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