Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 866-83-1, Whether you call it Potassium Citrate Monobasic, Citric Acid Monopotassium Salt or Potassium Dihydrogen Citrate you can be assured the Potassium Citrate Monobasic products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.