Name | Echtbrown |
Synonyms | Echtbrown Brown RD C.I. 20195 Echt brown n Acid Brown R Acid Brown 14 Acid Brown GR Fenazo Brown N C.I. Acid Brown 14 Echt Brown NAcid Brown 14 C.I. Acid Brown 14, disodium salt C.I. Acid Brown 14, disodium salt (8CI) Disodium 4,4'-[(2,4-dihydroxy-1,3-phenylene)bis(azo)]bisnaphthalene-1-sulphonate 4,4'-[(2,4-Dihydroxy-1,3-phenylene)bis(azo)]bis(1-naphthalenesulfonic acid sodium) salt 1-Naphthalenesulfonic acid, 4,4-(2,4-dihydroxy-1,3-phenylene)bis(azo)bis-, disodium salt disodium 4,4'-[(2,6-dioxocyclohex-4-ene-1,3-diylidene)di(2E)hydrazin-1-yl-2-ylidene]dinaphthalene-1-sulfonate |
CAS | 5850-16-8 |
EINECS | 227-447-6 |
InChI | InChI=1/C26H18N4O8S2.2Na/c31-22-12-9-21(29-27-19-10-13-23(39(33,34)35)17-7-3-1-5-15(17)19)26(32)25(22)30-28-20-11-14-24(40(36,37)38)18-8-4-2-6-16(18)20;;/h1-14,27-28H,(H,33,34,35)(H,36,37,38);;/q;2*+1/p-2/b29-21+,30-25+; |
Molecular Formula | C26H16N4Na2O8S2 |
Molar Mass | 622.54 |
Density | 1.744[at 20℃] |
Water Solubility | 1.55g/L at 20℃ |
Vapor Presure | 0.001Pa at 25℃ |
Appearance | Red powder |
Color | Orange to Brown |
Storage Condition | Room Temprature |
MDL | MFCD00059545 |
Physical and Chemical Properties | Red-brown powder. |
Color index | 20195 |
LogP | -2.019 at 20℃ |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
purpose | weak acid Brown R is mainly used for dyeing wool fabric and nylon fabric. |
production method | using 1-aminonaphthalene-4-sulfonic acid and resorcinol as raw materials, the product was first obtained by diazotization of 1-aminonaphthalene-4-sulfonic acid and then coupled with resorcinol. After salting out, filtration, drying, grinding to get the finished product.. |