Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 7778-50-9, Whether you call it Potassium Dichromate, Dichromic Acid Dipotassium Salt , Dipotassium Dichromate or Potassium Bichromate you can be assured the Potassium Dichromate products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.