Naphthalene-2,7-disulfonic acid

Base Information

• Chemical Name: Naphthalene-2,7-disulfonic acid
• CAS No.: 92-41-1
• Molecular Formula: C10H8O6S2
• Molecular Weight: 288.302
• Hs Code.: 2904100000
• European Community (EC) Number: 202-154-6
• NSC Number: 9589
• UNII: 01HGS7J21J
• DSSTox Substance ID: DTXSID3059054
• Nikkaji Number: J4.655H
• Wikidata: Q27114017
• Metabolomics Workbench ID: 54285
• Mol file: 92-41-1.mol

Synonyms:Naphthalene-2,7-disulfonic acid;92-41-1;2,7-Naphthalenedisulfonic acid;Naphthalene-2,7-disulphonic acid;2,7-Naphthalene disulfonic acid;Ebert-Merz alpha-acid;UNII-01HGS7J21J;01HGS7J21J;NSC 9589;NSC-9589;EINECS 202-154-6;NSC-65895;2,7-Naphthalenedisulfonicacid;Naphthalene-2,7-disulfonicacid;CBDivE_016132;SCHEMBL822307;2,7-DISULFONAPHTHALENE;naphthalene-2,7-disulphonicacid;DTXSID3059054;EBERT-MERZ .ALPHA.-ACID;CHEBI:30898;NSC9589;AKOS015964278;AC-18245;2,7-NAPHTHALENEDISULFONIC ACID [MI];FT-0610757;Q27114017

Chemical Property of Naphthalene-2,7-disulfonic acid

Chemical Property:

• Melting Point: 80-84°C(lit.)
• Refractive Index: 1.695
• Boiling Point: 400.53°C (rough estimate)
• PSA: 125.50000
• Density: 1.704 g/cm³
• LogP: 3.49480
• Storage Temp.: 2-8°C
• XLogP3: -0.6
• Hydrogen Bond Donor Count: 2
• Hydrogen Bond Acceptor Count: 6
• Rotatable Bond Count: 2
• Exact Mass: 287.97623032
• Heavy Atom Count: 18
• Complexity: 452

Purity/Quality:

98%,99%, ^*data from raw suppliers

Naphthalene-2,7-disulfonic acid 95+% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: C1=CC(=CC2=C1C=CC(=C2)S(=O)(=O)O)S(=O)(=O)O

Technology Process of Naphthalene-2,7-disulfonic acid

There total 27 articles about Naphthalene-2,7-disulfonic acid which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 4.0%

naphthalene-2-sulfonate (120-18-3) → 2,7-naphthalenedisulfonic acid (92-41-1) + naphthalene-2,6-disulfonic acid (581-75-9) + naphthalene-1,7-disulphonic acid (5724-16-3) + naphthalene-1,6-disulfonic acid (525-37-1) + naphthalene-1,3-disulfonic acid (6094-26-4) + naphthalene-1,3,6-trisulfonic acid (86-66-8)

Guidance literature:

With sulfuric acid; at 25 ℃; Product distribution; further reaction with 105.2percent H₂SO₄;

Reference yield:

naphthalene-2-sulfonate (120-18-3) + sulfuric acid (7664-93-9) → 2,7-naphthalenedisulfonic acid (92-41-1) + naphthalene-2,6-disulfonic acid (581-75-9) + naphthalene-1,6-disulfonic acid (525-37-1) + naphthalene-1,3-disulfonic acid (6094-26-4)

Guidance literature:

at 57 ℃; Mengenverhaeltnis der Reaktionsprodukte; Produkt₅:Naphthalin-1,7-disulfonsaeure;

Reference yield:

naphthalene (91-20-3,71998-51-1,72931-45-4) → 2,7-naphthalenedisulfonic acid (92-41-1) + naphthalene-2,6-disulfonic acid (581-75-9)

Guidance literature:

With sulfuric acid; at 160 ℃;

upstream raw materials:

naphthalene

naphthalene-2-sulfonate

1-naphthalenesulfonic acid

4-amino-naphthalene-2,7-disulfonic acid

Downstream raw materials:

4-(4,4'-bis-diethylamino-α-hydroxy-benzhydryl)-naphthalene-2,7-disulfonic acid

2,7-dichloronaphthalene

2,7-dibromonaphthalene

2-hydroxynaphthalene-7-sulfonic acid

Refernces

• 1、 -. "Method of synthesizing, purifying and refining 2,6-naphthalene disulfonic acid". Paragraph 0028; 0029; 0030; 0031. . Retrieved 2018/11/22.
• 2、 Wit, Peter De,Cerfontain, Hans. "On the positional reactivity order in the sulfuric acid sulfonation of the two naphthalenesulfonic acids". . p. 1453 - 1455. Retrieved 2007/10/02.