Phosphate → HCID 19850697, compound

Participants

Reaction Steps

To an ice-cold solution of 5.8 g of 4-(4'-amino-2'-methylphenylazo)benzamidinium chloride in 800 parts of water was added 3.8 g of cyanuric chloride and the pH maintained between 5 and 6 and finally raised to 7 by the addition of 20 g of 1M sodium hydroxide solution. To this solution were then added 8 g of mixed phosphate buffer (equimolar amounts of KH2PO4 and Na2HPO4), followed by 40 g of salt and the precipitate of dichlorotriazine filtered off, mixed with further 1 g of phosphate buffer to ensure stability during drying and dried in vacuo giving 4-(4-[4,6-dichloro-s-triazin-2-ylamino]-2-methyl-phenylazo)benzamidinium chloride.

Provenance & Evidence