.: DSD ACID .: P-Nitro Toluene-sulfonic acid .: Dinitro Acid Dinitro Acid   1.Chemical name:4,4'-Dinitro stilbene-2,2'-disulfonic acid 2.Structural Formula: 3.Molecular Formula:C14H10N2O10S2 4.Molecular Weight:430 5.Specifications: Items Index of quality (1)Appearance Orange-yellow powder (2)Contents(on basis of total sample) 80.0%min (3)Dinitro benzyl value(on basis of total sample) 4.0%max (4)Other organic impurities(on basis of total sample) 1.0%max (5)Contents of Inorganic Salt(on basis of total sample) 10.0%max (6)Insoluble in water (on basis of total sample) 1.0%max 6.Main usage: Dinitro Acid is a kind of dyes intermediates, can be used in manufacture of DSD Acid. 7.Packing: 25kg net poly-woven bags or as customers' requirements.   (c)2003 Hebei Hengshui Donggang Chemical Co., Ltd. Add:East Daqing road Hengshui in China 053000 Tel:+86-318-2127902 Fax:+86-318-2172108 E-mail: donggang@hsdonggang.com