Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 22560-50-5, Whether you call it Dichloromethylenediphosphonic Acid Disodium Salt, Clodronic Acid Disodium Salt or DMDP you can be assured the Dichloromethylenediphosphonic Acid Disodium Salt products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.