Chemical Name: J Acid Urea

Synonyms: N,N'-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea; Bis-J Acid

CAS No.: 134-47-4

Molecular Formula: C21H16O9N2S2

Specifications:

Appearance : off-white powder (dry)

Assay : 85%Min.

Free acid(HPLC): 0.2% Max.

Insolubles: 0.2% Max.

Chlorinity: 5 %Max.

Application:

Intermediate of Azo dyes, mainly used in the preparation of direct orange S, direct acid scarlet 4 BS, etc.

134-47-4 4,4'-dihydroxy-7,7'-ureylenedi(naphthalene-2-sulphonic acid

product Name 4,4'-dihydroxy-7,7'-ureylenedi(naphthalene-2-sulphonic acid Synonyms 7,7-(carbonyldiimino)bis[4-hydroxy-2-naphthalenesulfonic acid]; 5,5-DIHYDROXY-7,7-DISULPHO-2,2-DINAPHTHYL UREA; J Acid Urea; Bis-J Acid; 4,4'-dihydroxy-7,7'-ureylenedi(naphthalene-2-sulphonic acid); 7,7'-(Carbonyldiimino)bis[4-hydroxy-2-naphthalenesulfonic acid]; 6,6'-ureylene-bis(1-naphthol-3-sulfonic acid); phosgenated; N,N'-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea; 7,7'-Ureylenebis(4-hydroxy-2-naphthalenesulfonic acid); N,N'-Bis[6-(1-naphthol-3-sulfonic acid)]urea; 2-Naphthalenesulfonic acid, 7,7-(carbonyldiimino)bis4-hydroxy-; 4-hydroxy-7-{[(5-hydroxy-7-sulfonaphthalen-2-yl)carbamoyl]amino}naphthalene-2-sulfonic acid; 7,7'-Ureylene-bis-(4-hydroxynaphthalene-2-sulfonic acid) Molecular Formula C21H16N2O9S2 Molecular Weight 504.4897 InChI InChI=1/C21H16N2O9S2/c24-19-9-15(33(27,28)29)7-11-5-13(1-3-17(11)19)22-21(26)23-14-2-4-18-12(6-14)8-16(10-20(18)25)34(30,31)32/h1-10,24-25H,(H2,22,23,26)(H,27,28,29)(H,30,31,32) CAS Registry Number 134-47-4 EINECS 205-142-9 Molecular Structure   Density 1.798g/cm3 Refractive index 1.822

Packing& Storage:

25kg/bag as customer's requirement.

Store in a cool, dry place. Store in a tightly closed container.