4425-36-9O=S(=O)([O-])Oc1c(-c2sc3ccc4ccccc4c3c2OS(=O)(=O)[O-])sc2ccc3ccccc3c12.[Na+].[Na+]QEUFEMFUODMTPB-UHFFFAOYSA-L4425-36-9DTXSID60196079Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
Preparation(a) in the presence of Pyridine , with Chlorosulfonic acid treatment C.I. Vat Brown 5 leuco; (b) in the Pyridine with metal (such as copper, iron, zinc, etc) and Sulfur trioxide source (such as Sulfur trioxide, Chlorosulfonic acid or Methyl chlorosulfonate, etc.) processing C.I. Vat Brown 5. The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.
No reaction records under the current filter.
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