|
|
| | 4-Amino-1,3-benzenedisulfonic acid Basic information |
| Product Name: | 4-Amino-1,3-benzenedisulfonic acid | | Synonyms: | ANILINE-2,4-DISULFONIC ACID;ANILINE-2,4-DISULPHONIC ACID;4-aminobenzene-1,3-disulphonic acid;4-Amino-1,3-benzenedisulfonic acid;4-Aminobenzene-1,3-Disulfonic Acid;4-azanylbenzene-1,3-disulfonic acid;3-Benzenedisulfonicacid,4-amino-1;4-amino-3-benzenedisulfonicacid | | CAS: | 137-51-9 | | MF: | C6H7NO6S2 | | MW: | 253.25 | | EINECS: | 205-299-3 | | Product Categories: | Intermediates of Dyes and Pigments | | Mol File: | 137-51-9.mol |  |
| | 4-Amino-1,3-benzenedisulfonic acid Chemical Properties |
| Melting point | >259°C (dec.) | | Boiling point | 497.45℃[at 101 325 Pa] | | density | 1.844±0.06 g/cm3(Predicted) | | vapor pressure | 0Pa at 25℃ | | storage temp. | Keep in dark place,Sealed in dry,Room Temperature | | solubility | Aqueous Acid (Slightly), DMSO (Slightly), Methanol (Slightly), Water (Slightly) | | pka | -0.93±0.48(Predicted) | | form | Solid | | color | White to Grey | | Water Solubility | 4.3g/L at 21℃ | | Stability: | Hygroscopic | | LogP | -0.959 at 21℃ | | CAS DataBase Reference | 137-51-9(CAS DataBase Reference) | | EPA Substance Registry System | 1,3-Benzenedisulfonic acid, 4-amino- (137-51-9) |
| | 4-Amino-1,3-benzenedisulfonic acid Usage And Synthesis |
| Uses | 4-Amino-1,3-benzenedisulfonic Acid is used as a reagent in the synthesis of arylazopyridoxal phosphate and phosphonate derivatives as P2 receptor antagonists. | | Production Methods | 4-Amino-1,3-benzenedisulfonic acid is freely soluble in water and ethyl alcohol. It is prepared by sulfonating 4-aminobenzenesulfonic acid with oleum at 20 ℃ and130 ℃ (4 – 6.5 h), draining the sulfonation mixture into water under pressure, adding lime at 70 – 75 ℃, separating the resulting gypsum, precipitating the calcium ions with soda, removing the calcium carbonate formed, and concentrating the sodium salt solution by evaporation. Yield 90 – 91%
| | Flammability and Explosibility | Non flammable |
| | 4-Amino-1,3-benzenedisulfonic acid Preparation Products And Raw materials |
|