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| | 2,4-Diaminobenzenesulfonic acid Basic information | | Uses |
| | 2,4-Diaminobenzenesulfonic acid Chemical Properties |
| Melting point | 260-266 °C (dec.) | | Boiling point | 500°C (estimate) | | density | 1.366 (estimate) | | vapor pressure | 0Pa at 25℃ | | refractive index | 1.6490 (estimate) | | storage temp. | -20°C Freezer, Under inert atmosphere | | solubility | DMSO (Slightly, Heated), Methanol (Slightly) | | pka | 2.99±0.10(Predicted) | | form | Solid | | color | White to Pale Yellow | | Water Solubility | 1000g/L at 25℃ | | BRN | 2694057 | | LogP | -4.65 | | CAS DataBase Reference | 88-63-1(CAS DataBase Reference) | | EPA Substance Registry System | Benzenesulfonic acid, 2,4-diamino- (88-63-1) |
| | 2,4-Diaminobenzenesulfonic acid Usage And Synthesis |
| Uses | 2,4-Diaminobenzenesulfonic acid (cas# 88-63-1) is a useful reagent for improving the chlorine resistance and water permeability of polyamide (PA) membrane in water treatment. | | Chemical Properties | brown crystalline powder | | Uses | 2,4-Diaminobenzenesulfonic acid was used in preparation of series of sulfonated homo- and random co-polyimides. | | Production Methods | 2,4-Diaminobenzenesulfonic acid is obtained by sulfonating a solution of m-phenylenediamine in 100% sulfuric acid with oleum at 155 ℃, adding water to the sulfonation mixture, desulfonating the resulting disulfonic acids at 140 ℃, and isolating the free acid at 10 ℃; yield 93%. Another process starts from 1-chloro-2,4-dinitrobenzene, which, as an alcoholic solution, is reacted with sodium sulfite solution to form 2,4-dinitrobenzenesulfonic acid, from which the end product is obtained by reduction with iron according to BE′CHAMP. | | General Description | 2,4-Diaminobenzenesulfonic acid is an sulfonated aromatic amine and its aerobic biodegradation was reported. |
| | 2,4-Diaminobenzenesulfonic acid Preparation Products And Raw materials |
| Raw materials | Sodium bisulfite-->2,4-Dinitrochlorobenzene-->2-AMINO-4-METHYLAMINOBENZENE SULFONIC ACID | | Preparation Products | REACTIVE BLUE 4-->Reactive Dark Blue M-2ge-->disodium 4-[[2,4-diamino-5-[(3-sulphonatophenyl)azo]phenyl]azo]-2-[[2,6-dihydroxy-3-[(4-nitrophenyl)azo]phenyl]azo]benzenesulphonate-->Reactive Blue 222-->REACTIVE BLUE 5-->Mordant Brown 33-->Mordant Brown 49-->Acid Yellow 127-->CIBACRON BRILLIANT YELLOW 3G-P-->Reactive Yellow 179-->Reactive Light Yellow M-5G-->Reactive Yellow 18-->PROCION YELLOW H-E3G-->Reactive Brilliant Blue M-BR-->disodium 2,5-dichloro-4-[4-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulphonatophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate-->Neutral Brilliant Yellow S-5GL-->Reactive Navy Blue Ker-->[2,6'-Bibenzothiazole]-7-sulfonic acid, 2'-[4-[[2,6-diamino-3-sulfo-5-[(3-sulfophenyl)azo]phenyl]azo]phenyl]-6-methyl-, trisodium salt-->trisodium 2,4-bis[[2,4-diamino-5-[(3-sulphonatophenyl)azo]phenyl]azo]benzenesulphonate |
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