| Identification | More | [Name]
4-Amino-1,3-benzenedisulfonic acid | [CAS]
137-51-9 | [Synonyms]
4-Amino-1,3-benzenedisulfonic acid
4-aminobenzene-1,3-disulphonic acid
ANILINE-2,4-DISULFONIC ACID
ANILINE-2,4-DISULPHONIC ACID
3-Benzenedisulfonicacid,4-amino-1
4-amino-3-benzenedisulfonicacid
4-Amino-m-benzenedisulfonicacid
4-Aminobenzene-1,3-Disulfonic Acid | [EINECS(EC#)]
205-299-3 | [Molecular Formula]
C6H7NO6S2 | [MDL Number]
MFCD00035903 | [Molecular Weight]
253.25 | [MOL File]
137-51-9.mol |
| Chemical Properties | Back Directory | [Melting point ]
>259°C (dec.) | [Boiling point ]
497.45°C[at 101 325 Pa] | [density ]
1.844±0.06 g/cm3(Predicted) | [vapor pressure ]
0Pa@25°C | [storage temp. ]
Keep in dark place,Sealed in dry,Room Temperature | [solubility ]
Aqueous Acid (Slightly), DMSO (Slightly), Methanol (Slightly), Water (Slightly) | [form ]
Solid | [pka]
-0.93±0.48(Predicted) | [color ]
White to Grey | [Water Solubility ]
4.3g/L@21°C | [Stability:]
Hygroscopic | [InChI]
InChI=1S/C6H7NO6S2/c7-5-2-1-4(14(8,9)10)3-6(5)15(11,12)13/h1-3H,7H2,(H,8,9,10)(H,11,12,13) | [InChIKey]
IMUUNYPYNWXUBO-UHFFFAOYSA-N | [SMILES]
C1(S(O)(=O)=O)=CC=C(N)C(S(O)(=O)=O)=C1 | [LogP]
-0.959 at 21℃ | [CAS DataBase Reference]
137-51-9(CAS DataBase Reference) | [EPA Substance Registry System]
137-51-9(EPA Substance) |
| Hazard Information | Back Directory | [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]
Nonflammable(100%) |
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