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- Jan 23, 2024
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- 44
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What determines the color of 4MMC :
Yellowish - produced by ingestion of 4'-methyl-2-bromopropiophenone, making the product oily;
Yellow - Yellow-brown, brown - resins formed during overheating of the reaction mixture, iodine;
Greenish - obtained when 4'-methyl-2-bromopropiophenone gets into the final product;
Reddish, ginger, earthy colors- iodine / bromine contamination;
Blue, bluish - excess methylamine salts;
Black, dark brown pasty - n-methylpyrrolidone, DMSO, DMF.
Yellowish - produced by ingestion of 4'-methyl-2-bromopropiophenone, making the product oily;
Yellow - Yellow-brown, brown - resins formed during overheating of the reaction mixture, iodine;
Greenish - obtained when 4'-methyl-2-bromopropiophenone gets into the final product;
Reddish, ginger, earthy colors- iodine / bromine contamination;
Blue, bluish - excess methylamine salts;
Black, dark brown pasty - n-methylpyrrolidone, DMSO, DMF.