Based on the catalytic effect of thiocyanate on the oxidation of alizarine red by potassium bromate,a new catalytic spectrophotometric method for the determination of trace thiocyanate was developed.

在磷介质中，硫氰对溴钾氧红褪色反应具有较强催作用，此建立了催光度法测定痕量硫氰新方法。

Alizarin complexone is obtained by the condensation of alizarin with formaldehyde solution and iminodiacetic acid in the presence of alkaline conditions.

络合指示剂是在碱性条件下由、甲醛和亚氨基二乙缩合而成。