Disodium 4,5-Dihydroxybenzene-1,3-disulfonate Monohydrate – CAS n.: 149-45-1 – EC n.: — Product Code: 000602760118

Synonym: DS-1, Silver Halide Stabilizer, Tiron, Pyrocatechol-3,5-disulfonic acid disodium salt

Off-white crystalline powder
Assay (Area-%) min 99.0 (HPLC)
Water 4.5 – 6.0 % (KF)
Chloride max 0.1 % (Titr.)
Sulfate max 1.0 % (Titr.)
Solubility (5% H2O) clear, slightly brownish, no residue
Turbidity (NTU) max 5
Colour (APHA) max 100