Description

4,4′-Dinitro-2,2′-stilbenedisulfonic acid (CAS No. 128-42-7) is a high-purity organic compound with the molecular formula C₁₄H₁₀N₂O₁₀S₂. This yellow crystalline powder is widely utilized in research and industrial applications due to its unique sulfonic acid functionality and nitro-substituted aromatic structure. It serves as a key intermediate in the synthesis of dyes, fluorescent whitening agents, and specialty chemicals. With excellent water solubility, this compound is ideal for aqueous-phase reactions and analytical applications. Our product is rigorously tested for purity (>98%) and consistency, ensuring reliable performance in sensitive experiments. Proper handling is recommended, as it may be irritant under certain conditions.

Properties

• CAS Number: 128-42-7
• Complexity: 761
• IUPAC Name: 5-nitro-2-[(E)-2-(4-nitro-2-sulfo-phenyl)vinyl]benzenesulfonic acid
• InChI: InChI=1S/C14H10N2O10S2/c17-15(18)11-5-3-9(13(7-11)27(21,22)23)1-2-10-4-6-12(16(19)20)8-14(10)28(24,25)26/h1-8H,(H,21,22,23)(H,24,25,26)/b2-1+
• InChI Key: UETHPMGVZHBAFB-OWOJBTEDSA-N
• Exact Mass: 429.97768687
• Molecular Formula: C14H10N2O10S2
• Molecular Weight: 430.4
• SMILES: C1=CC(=C(C=C1[N+](=O)[O-])S(=O)(=O)O)/C=C/C2=C(C=C(C=C2)[N+](=O)[O-])S(=O)(=O)O
• Topological: 217
• Monoisotopic Mass: 429.97768687
• Synonyms: 4,4′-Dinitrostilbene-2,2′-disulphonic acid, 4,4′-DINITRO-2,2′-STILBENEDISULFONIC ACID, 2,2′-Stilbenedisulfonic acid, 4,4′-dinitro-, HSDB 5473, EINECS 204-885-6, 6ND7PC82E2, NSC-1793, Benzenesulfonic acid, 2,2′-(1,2-ethenediyl)bis(5-nitro-, Kyselina 4,4′-dinitrostilben-2,2′-disulfonova [Czech], C13706, EC 204-885-6, Kyselina 4,4′-dinitrostilben-2,2′-disulfonova, J6.570F, 4,4′-Dinitro-2,2′-stilbenesulfonic acid, Benzenesulfonic acid, 2,2′-(1,2-ethenediyl)bis[5-nitro-, DTXSID7047019, KYSELINA 4,4′-DINITROSTILBEN-2,2′-DISULFONOVA (CZECH), DTXCID5027019, 2,2’Stilbenedisulfonic acid, 4,4’dinitro, Kyselina 4,4’dinitrostilben2,2’disulfonova, Benzenesulfonic acid, 2,2′(1,2ethenediyl)bis(5nitro, 128-42-7, Dinitrostilbenedisulfonic acid, 4,4′-Dinitrostilbene-2,2′-disulfonic acid, DNDS, 6,6′-(Ethene-1,2-diyl)bis(3-nitrobenzenesulfonic acid), NSC 1793, CHEBI:36662, NSC1793, 2,2′-(1,2-ethenediyl)bis(5-nitrobenzenesulfonic acid), 2,2′-(E)-ethene-1,2-diylbis(5-nitrobenzenesulfonic acid), (E)-6,6′-(Ethene-1,2-diyl)bis(3-nitrobenzenesulfonic acid), 5-nitro-2-[(E)-2-(4-nitro-2-sulfophenyl)ethenyl]benzenesulfonic acid, 78333-25-2, NSC163175, CHEBI:34663, UNII-6ND7PC82E2, 5-nitro-2-[(E)-2-(4-nitro-2-sulfo-phenyl)vinyl]benzenesulfonic acid, 2, 4,4′-dinitro-, Kyselina 4,2′-disulfonova, SCHEMBL455775, CHEMBL2074646, 6,6′-(Ethene-1,2-diyl)bis-(3-nitrobenzenesulfonic acid), UETHPMGVZHBAFB-OWOJBTEDSA-N, DTXSID401029491, LMPK13090017, STK523135, AKOS000727588, AKOS024264465, AKOS025311567, GS-3434, NS00001804, 4, 4′-Dinitro-2,2′-stilbenedisulfonic acid, 4, 4′-Dinitrostilbene-2,2′-disulfonic acid, (E)-4,4′-dinitro-2,2′-stilbenesulfonic acid, 2, 2′-Stilbenedisulfonic acid, 4,4′-dinitro-, Kyselina 4,4′-dinitrostilben-2, 2′-disulfonova, 4,4′-dinitro-trans-stilbene-2,2′-disulfonic acid, 2,2′-ethene-1,2-diylbis(5-nitrobenzenesulfonic acid), Q27896130, 6,6′-(Ethene-1,2-diyl)bis(3-nitrobenzenesulfonicacid), Benzenesulfonic acid,2′-(1,2-ethenediyl)bis[5-nitro-, 2,2′-(1, 2-Ethenediyl)bis(5-nitrobenzenesulfonic acid), Nitrobenzenesulfonic acid, (E)-6,6′-(ethene-1,2-diyl)bis, 5,5′-dinitro-2,2′-(ethene-1,2-diyl)dibenzenesulfonic acid, Benzenesulfonic acid, {2,2′-(1,2-ethenediyl)bis[5-nitro-}, 5,5′-dinitro-2,2′-[(1E)-ethene-1,2-diyl]dibenzenesulfonic acid, 5-nitro-2-[2-(4-nitro-2-sulfophenyl)ethenyl]benzene-1-sulfonic acid, Benzenesulfonic acid, {2,2′-(1,2-ethenediyl)bis[5-nitro-,} disodium salt, 5-NITRO-2-[(1E)-2-(4-NITRO-2-SULFOPHENYL)ETHENYL]BENZENE-1-SULFONIC ACID

4,4′-Dinitro-2,2′-stilbenedisulfonic acid is primarily used as a precursor in the synthesis of optical brighteners and anionic dyes. Researchers employ it in photochemical studies due to its UV-visible absorption properties. The compound also finds application in polymer chemistry as a sulfonation agent. Its disulfonic acid groups make it valuable for modifying surface charges in material science applications. Industrial formulations may incorporate it as a stabilizer or intermediate in specialty chemical production.

Safety and Hazards

GHS Hazard Statements

• H315 (61.5%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (61.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

Precautionary Statements

• P264, P264+P265, P280, P302+P352, P305+P351+P338, P321, P332+P317, P337+P317, and P362+P364

Hazard Classes and Categories

• Skin Irrit. 2 (61.5%)
• Eye Irrit. 2 (61.5%)

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