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2'DIASULFONIC ACID

Chemical name

4,4'-Diaminostilbene-2,2'Diasulfonic Acid (DSD ACID)

Structural formula

Specification

Appearance	Yellowish powder	Yellowish paste
Assay (Amino value)	≥ 95%	≥ 60%
Assay (HPLC)	≥ 95%	≥ 95%
Content of DND	≤ 0.5%	≤ 0.5%
Content of alkaline undissolved matter	≤ 0.1%	≤ 0.1%
Ash content	≤ 2.50%	≤ 2.50%
Gardner Color	≤ 12	≤ 12

Application

Used in the synthesis of fluorescent brightening agent, Chrysophenine G, Sun yellow and Pesticide. Insecticide

DISULFOANILINE MONOSODIUM SALT