7-Hydroxynaphthalene-1,3-disulfonic acid supplier

Name
1,3-Naphthalenedisulfonicacid, 7-hydroxy-
EINECS 204-245-6
CAS No. 118-32-1
Article Data19
CAS DataBase
Density 1.816 g/cm³
Solubility
Melting Point
Formula C₁₀H₈O₇S₂
Boiling Point 415.13°C (rough estimate)
Molecular Weight 304.301
Flash Point
Transport Information
Appearance
Safety
Risk Codes
Molecular Structure
Hazard Symbols
Synonyms 2-Hydroxy-6,8-naphthalenedisulfonicacid;2-Naphthol-6,8-disulfonic acid;7-Hydroxy-1,3-naphthalenedisulfonic acid;G acid;NSC 2073;b-Naphtholdisulfonic acid G;
PSA 145.73000
LogP 3.20040

Synthetic route

: 132-57-0
7-hydroxy-naphthalene-1-sulfonic acid

: 118-32-1
2-naphthol-6,8-disulfonic acid

Conditions

Conditions	Yield
beim Sulfurieren;

: 86-65-7
2-aminonaphthalene-6,8-disulfonate

: 118-32-1
2-naphthol-6,8-disulfonic acid

Conditions

Conditions	Yield
Diazotization.Zersetzung mit siedender verd.Schwefelsaeure;
Verkochen mit verd. Schwefelsaeure.Diazotization;

: 135-19-3
β-naphthol

: 118-32-1
2-naphthol-6,8-disulfonic acid

Conditions

Conditions	Yield
With sulfuric acid at 60℃; Trennung ueber mehreren Stufen nach mehreren Verfahren (Trennung der γ-Saeure von der R-Saeure);
With sulfuric acid at 20℃; Trennung ueber mehreren Stufen nach mehreren Verfahren (Trennung der γ-Saeure von der R-Saeure);
With sulfuric acid Darstellung;

: 135-19-3
β-naphthol

A: 118-32-1
2-naphthol-6,8-disulfonic acid

B: 93-01-6
2-naphthol-6-sulfonic acid

Conditions

Conditions	Yield
With sulfuric acid at 60℃; Trennung ueber mehreren Stufen nach mehreren Verfahren (Trennung der γ-Saeure von der R-Saeure);
With sulfuric acid at 60℃; Trennung ueber mehreren Stufen nach mehreren Verfahren (Trennung der γ-Saeure von der R-Saeure);

: 842-18-2
7-hydroxy-1,3-naphthalene-disulfonic acid, dipotassium salt

: 118-32-1
2-naphthol-6,8-disulfonic acid

Conditions

Conditions	Yield
With water In n-heptane Rate constant; effect of bis(2-ethylhexyl)sulfosuccinate (AOT) on rate constants;

: 6,8-Disulfo-naphthalen-2-ol anion

: 118-32-1
2-naphthol-6,8-disulfonic acid

Conditions

Conditions	Yield
With oxonium at 293℃; Rate constant;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 86-65-7
2-aminonaphthalene-6,8-disulfonate

Conditions

Conditions	Yield
With ammonium hydrogen sulfite; potassium chloride; ammonia In water at 130℃;	75%
With ammonium sulfite; ammonia at 100℃;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 95-54-5
1,2-diamino-benzene

A: 1311158-17-4
benzo[a]phenazine-3,6-disulfonic acid

B: 1311158-19-6
5-(2-hydroxy-6,8-bis(sulfo)naphthalen-1-yl)benzo[a]phenazine-1,3-disulfonic acid

Conditions

Conditions	Yield
Stage #1: 2-naphthol-6,8-disulfonic acid In dichloromethane at 20℃; for 20h; Stage #2: 1,2-diamino-benzene With acetic acid In dichloromethane at 20℃; for 12h;	A n/a B 74%

...Expand

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 68985-08-0
2,4,6-trimethyl-1,3-benzenedisulfonyl dichloride

: tetrasodium 7,7'-[2,4-mesitylenediylbis(sulfonyloxy)]bis(1,3-naphthalenedisulfonate)

Conditions

Conditions	Yield
With sodium hydrogencarbonate at 45 - 50℃; for 22h;	51%

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 1928-01-4
naphthalene-1,5-disulphonyl chloride

: 2,2'-<1,5-naphthalenediylbis(sulfonyloxy)>bis(6,8-naphthalenedisulfonic acid) tetrasodium salt

Conditions

Conditions	Yield
With sodium hydrogencarbonate In water at 45 - 50℃; for 48h;	19.2%

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 3406-84-6
biphenyl-4,4'-disulfonyl chloride

: 2,2'-<4,4'-biphenyldiylbis(sulfonyloxy)>bis(6,8-naphthalenedisulfonic acid) tetrasodium salt

Conditions

Conditions	Yield
With sodium hydrogencarbonate In water at 40 - 45℃; for 48h;	16.5%

: 2684-02-8
benzenediazonium

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 14245-98-8
orange G

Conditions

Conditions	Yield
beim Behandeln von Benzoldiazoniumsalz;

: 57573-52-1
4-methylbenzene diazonium

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 5859-09-6
7-hydroxy-8-p-tolylazo-naphthalene-1,3-disulfonic acid

: 27231-26-1
3-amino-9H-xanthen-9-one

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 7-hydroxy-8-(9-oxo-xanthen-3-ylazo)-naphthalene-1,3-disulfonic acid

: 17333-74-3
2-methylbenzene diazonium

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 74783-00-9
7-hydroxy-8-o-tolylazo-naphthalene-1,3-disulfonic acid

: 17333-84-5
3-chlorobenzenediazonium

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 23481-18-7
8-(3-chloro-phenylazo)-7-hydroxy-naphthalene-1,3-disulfonic acid

: 5957-03-9
Diphenyl-4,4'-bis-diazonium

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 18031-83-9
7,7'-dihydroxy-8,8'-biphenyl-4,4'-diyl-bis-azo-bis-naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
With sodium carbonate

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 83702-86-7
4-sulfo-naphthalene-1-diazonium-betaine

: 7244-14-6
Neucoccin

Conditions

Conditions	Yield
With alkali
With alkali

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 120612-68-2
diazotiertes 2-Amino-diphenylenoxyd

: 8-dibenzofuran-3-ylazo-7-hydroxy-naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
With alkali

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 578-22-3
2-methyl-5-hydroxybenzoic acid

Conditions

Conditions	Yield
With sodium hydroxide at 260 - 320℃;
With sodium hydroxide at 260℃;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 6357-93-3
2,8-dihydroxynaphthalene-6-sulphonic acid

Conditions

Conditions	Yield
With alkali durch Verschmelzen;
With potassium hydroxide at 200 - 205℃;
With alkali durch Verschmelzen;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 116571-44-9
8-deuterio-7-hydroxy-naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
With sodium hydroxide; water-d2 Behandeln des Reaktionsprodukts mit wss.Phosphat-Pufferloesung oder wss.HCl;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 18023-25-1
5-amino-6-hydroxynaphthalene-2,4-disulphonic acid

Conditions

Conditions	Yield
durch Reduktion von Azoderivaten;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 7-ethoxy-naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
durch Aethylieren;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 93-01-6
2-naphthol-6-sulfonic acid

Conditions

Conditions	Yield
With sodium amalgam

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 541-41-3
chloroformic acid ethyl ester

: 7-ethoxycarbonyloxy-naphthalene-1,3-disulfonyl chloride

Conditions

Conditions	Yield
With potassium hydroxide Erhitzen des Reaktionsprodukts mit Phosphorpentachlorid auf 130grad;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 123-30-8
4-amino-phenol

: 7-(4-hydroxy-anilino)-naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
With sodium disulfite

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 106-49-0
p-toluidine

: 7-p-toluidino-naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
With sodium disulfite

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 75-04-7
ethylamine

: 6259-51-4
6-ethylamino-4-hydroxy-naphthalene-2-sulfonic acid

Conditions

Conditions	Yield
at 200℃; im Autoklaven und Erhitzen des Produkts mit Aetzalkali auf 210-220grad;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 124-40-3
dimethyl amine

: 6259-50-3
6-dimethylamino-4-hydroxy-naphthalene-2-sulfonic acid

Conditions

Conditions	Yield
at 200℃; im Autoklaven und Erhitzen des Produkts mit Aetzalkali auf 210-220grad;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 109-89-7
diethylamine

: 111151-51-0
6-diethylamino-4-hydroxy-naphthalene-2-sulfonic acid

Conditions

Conditions	Yield
at 200℃; im Autoklaven und Erhitzen des Produkts mit Aetzalkali auf 210-220grad;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 138-89-6
p-dimethylaminonitrosobenzene

: 9-dimethylamino-12H-benzo[a]phenoxazine-1,3-disulfonic acid

Conditions

Conditions	Yield
With ethanol

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 74-89-5
methylamine

: 6259-53-6
2-(N-methylamino)-8-hydroxynaphthalene-6-sulfonic acid

Conditions

Conditions	Yield
at 200℃; im Autoklaven und Erhitzen des Produkts mit Aetzalkali auf 210-220grad;

: 118-32-1
2-naphthol-6,8-disulfonic acid

: 106-50-3
1,4-phenylenediamine

: 86713-66-8
7-(4-amino-anilino)-naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
With sodium disulfite

7-Hydroxynaphthalene-1,3-disulfonic acid Chemical Properties

The Molecular Structure of 1,3-Naphthalenedisulfonic acid, 7-hydroxy- (CAS NO.118-32-1):

Empirical Formula: C₁₀H₈O₇S₂
Molecular Weight: 304.2963
IUPAC: 7-hydroxynaphthalene-1,3-disulfonic acid
Product Categories: Intermediates of Dyes and Pigments
Nominal Mass: 304 Da
Average Mass: 304.2963 Da
Monoisotopic Mass: 303.971143 Da
Index of Refraction: 1.725
Molar Refractivity: 66.53 cm³
Molar Volume: 167.5 cm³
Surface Tension: 89.5 dyne/cm
Density: 1.816 g/cm³
log P (octanol-water): -1.420 (none)
Atmospheric OH Rate Constant: 3.81E-12 cm³/molecule-sec at 25°C
InChI
InChI=1/C10H8O7S2/c11-7-2-1-6-3-8(18(12,13)14)5-10(9(6)4-7)19(15,16)17/h1-5,11H,(H,12,13,14)(H,15,16,17)
Smiles
O=S(=O)(O)c1cc(c2c(ccc(O)c2)c1)S(=O)(=O)O

7-Hydroxynaphthalene-1,3-disulfonic acid Specification

1,3-Naphthalenedisulfonic acid, 7-hydroxy- (CAS NO.118-32-1) is also called as 2-Naphthol-6,8-disulfonic acid ; 2-Hydroxynaphthalene-6,8-disulfonic acid ; 2-Naphthol-6,8-disulfonic acid ; 7-Hydroxy-1,3-naphthalenedisulfonic acid ; EINECS 204-245-6 ; G Acid ; NSC 2073 ; beta-Naphthol-gamma-disulfonic acid ; beta-Naphtholdisulfonic acid G ;7-Hydroxynaphthalene-1,3-disulphonic acid .

Product Name

1,3-Naphthalenedisulfonicacid, 7-hydroxy-

Synthetic route

7-Hydroxynaphthalene-1,3-disulfonic acid Chemical Properties

7-Hydroxynaphthalene-1,3-disulfonic acid Specification

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