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Coupling the diazonium salt with ANS
Coupling the diazonium salt with ANS
(ANS = 8-anilino-1-naphthalenesulfonic acid ammonium salt)
(ANS = 8-anilino-1-naphthalenesulfonic acid ammonium salt)
In-Lab #2:
Draw the complete arrow-pushing mechanism for the synthesis of easter purple from 4-nitroaniline diazonium salt
ANS_sltn.mp4diazosalt_sltn.mp4In a 100-mL beaker, dissolve 0.1 g of 8-anilino-1-naphthalenesulfonic acid ammonium salt (ANS) in 35 mL of water
In a 100-mL beaker, dilute the suspension of the diazonium salt from Part A with 30 mL of water
EP.mp4Ingrain dyeing:
Immerse an untreated fabric strip in the ANS solution for 2 min., stirring occasionally
Remove the fabric with tweezers, dry between paper towels
Transfer the fabric to the dilute diazonium salt solution, let it stand for 10 sec. at room temp.
Remove, soak in tap water, and then rinse until water runs clear
Result: easter purple (EP)
top to bottom – acetate, cotton, nylon, polyester, acrylic, and wool
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