• Name

  7-Amino-1,3-naphthalenedisulfonic acid

• EINECS 201-689-2
• CAS No. 86-65-7
• Article Data21
• CAS DataBase
• Density 1.769 g/cm³
• Solubility soluble in water
• Melting Point 300 °C
• Formula C₁₀H₉NO₆S₂
• Boiling Point 569oC
• Molecular Weight 303.317
• Flash Point
• Transport Information
• Appearance off-white to beige-green to light brown
• Safety 26-28A
• Risk Codes 34
• Molecular Structure
• Hazard Symbols C
• Synonyms 2-Amino-6,8-disulfonaphthalene;2-Aminonaphthalene-6,8-disulfonic acid;2-Naphthylamine-6,8-disulfonic acid;6,8-Disulfo-2-aminonaphthalene;Amido-G-Acid;Amino-G acid;NSC 4013;b-Naphthylamine-6,8-disulfonic acid;
• PSA 151.52000
• LogP 3.65820

Synthetic route

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℃;

86-60-2

7-aminonaphthalene-1-sulfonic acid

86-65-7

2-aminonaphthalene-6,8-disulfonate

Conditions

Conditions	Yield
With sulfuric acid

93-00-5

Bronner acid

A

6838-02-4

2-amino-naphthalene-1,6-disulfonic acid

B

86-65-7

2-aminonaphthalene-6,8-disulfonate

Conditions

Conditions	Yield
With sulfuric acid

7664-93-9

sulfuric acid

93-00-5

Bronner acid

A

6838-02-4

2-amino-naphthalene-1,6-disulfonic acid

B

86-65-7

2-aminonaphthalene-6,8-disulfonate

...Expand

118-32-1

2-naphthol-6,8-disulfonic acid

7664-41-7

ammonia

86-65-7

2-aminonaphthalene-6,8-disulfonate

Conditions

Conditions	Yield
at 200 - 250℃; das Alkalisalz reagiert;

118-32-1

2-naphthol-6,8-disulfonic acid

7664-41-7

ammonia

ammonium sulfite

ammonium sulfite

86-65-7

2-aminonaphthalene-6,8-disulfonate

...Expand

91-59-8

naphthalen-2-ylamine

oleum

oleum

A

118-33-2

6-amino-naphthalene-1,3-disulfonic acid

B

86-65-7

2-aminonaphthalene-6,8-disulfonate

Conditions

Conditions	Yield
at 50 - 85℃; Eingiessen in Eiswasser, Filtrieren und Erhitzen des Filtrats zum Sieden;
Giessen in Eiswasser;

...Expand

alkali salt of/the/ naphthol-(2)-disulfonic acid-(6.8)

alkali salt of/the/ naphthol-(2)-disulfonic acid-(6.8)

86-65-7

2-aminonaphthalene-6,8-disulfonate

Conditions

Conditions	Yield
With ammonia at 200 - 250℃;

sulfate β-naphthylamine

sulfate β-naphthylamine

86-65-7

2-aminonaphthalene-6,8-disulfonate

Conditions

Conditions	Yield
With sulfuric acid at 110 - 140℃;
With sulfuric acid at 110 - 140℃;

7664-93-9

sulfuric acid

74631-01-9

[2]naphthylamine; sulfate

86-65-7

2-aminonaphthalene-6,8-disulfonate

Conditions

Conditions	Yield
at 110 - 140℃;
at 110 - 140℃;

81-16-3

2-aminonaphthalenesulfonic acid

A

118-33-2

6-amino-naphthalene-1,3-disulfonic acid

B

86-65-7

2-aminonaphthalene-6,8-disulfonate

Conditions

Conditions	Yield
With sulfuric acid; sulfur trioxide In water	A n/a B 9.5 %.

135-19-3

β-naphthol

86-65-7

2-aminonaphthalene-6,8-disulfonate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: sulfuric acid / 40 - 60 °C 2: potassium chloride; ammonia; ammonium hydrogen sulfite / water / 130 °C View Scheme

86-65-7

2-aminonaphthalene-6,8-disulfonate

86137-74-8

3-tetradecanoyl-4-methylpiperazine

7-(myristoylamino)-1,3-naphthalene disulfonic acid

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 60 - 70℃; for 120h;	58%

86-65-7

2-aminonaphthalene-6,8-disulfonate

74058-64-3

1-(2-Thioxo-thiazolidin-3-yl)-hexadecan-1-one

7-(palmitoylamino)-1,3-naphthalene disulfonic acid

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 60 - 70℃; for 120h;	54%

86-65-7

2-aminonaphthalene-6,8-disulfonate

65439-62-5

3-stearoyl-2-mercaptothiazoline

7-(stearoylamino)-1,3-naphthalene disulfonic acid

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 60 - 70℃; for 120h;	44%

75-44-5

phosgene

86-65-7

2-aminonaphthalene-6,8-disulfonate

NSC 12857

Conditions

Conditions	Yield
With sodium carbonate

86-65-7

2-aminonaphthalene-6,8-disulfonate

90-51-7

6-amino-4-hydroxy-2-naphthalenesulfonic acid

Conditions

Conditions	Yield
durch Alkalischmelze;
With potassium carbonate at 200 - 280℃;

86-65-7

2-aminonaphthalene-6,8-disulfonate

578-22-3

2-methyl-5-hydroxybenzoic acid

Conditions

Conditions	Yield
With sodium hydroxide at 270 - 280℃;
With sodium hydroxide at 260℃;

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;

86-65-7

2-aminonaphthalene-6,8-disulfonate

3771-14-0

1-naphthol-3-sulfonic acid

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: potash / 200 - 280 °C 2: Reaktion ueber mehrere Stufen 3: CuSO4; water View Scheme
With alkali durch Verschmelzen und Eliminieren aus der Reaktionsprodukts die NH2-Gruppe;

86-65-7

2-aminonaphthalene-6,8-disulfonate

6094-26-4

naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
durch Austausch von NH2 gegen Wasserstoff;
durch Austausch von NH2 gegen Wasserstoff;

86-65-7

2-aminonaphthalene-6,8-disulfonate

85-49-4

naphthalene-1,3,7-trisulfonic acid

Conditions

Conditions	Yield
durch folgweise Diazotierung, Behandlung mit xanthogensaurem Kalium, Verseifung und Oxydation mittels KMnO4;

86-65-7

2-aminonaphthalene-6,8-disulfonate

102878-16-0

7-chloro-naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
durch Ersatz von NH2 durch Cl nach SANDMEYERschen Verfahren;

86-65-7

2-aminonaphthalene-6,8-disulfonate

106-49-0

p-toluidine

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

Conditions

Conditions	Yield
With p-toluidine hydrochloride at 100 - 140℃;

86-65-7

2-aminonaphthalene-6,8-disulfonate

142-04-1

aniline hydrochloride

62-53-3

aniline

110845-59-5

7-anilino-naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
at 100 - 140℃;

...Expand

86-65-7

2-aminonaphthalene-6,8-disulfonate

62-53-3

aniline

110845-59-5

7-anilino-naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
With aniline hydrochloride at 100 - 140℃;

86-65-7

2-aminonaphthalene-6,8-disulfonate

121-90-4

m-nitrobenzoic acid chloride

157871-80-2

7-(3-nitro-benzoylamino)-naphthalene-1,3-disulfonic acid

Conditions

Conditions	Yield
With alkali

86-65-7

2-aminonaphthalene-6,8-disulfonate

alkali

alkali

90-51-7

6-amino-4-hydroxy-2-naphthalenesulfonic acid

Conditions

Conditions	Yield
at 200 - 280℃;

86-65-7

2-aminonaphthalene-6,8-disulfonate

alkali

alkali

578-22-3

2-methyl-5-hydroxybenzoic acid

Conditions

Conditions	Yield
at 260 - 320℃;
at 260 - 320℃;

86-65-7

2-aminonaphthalene-6,8-disulfonate

34154-00-2

8-hydroxy-6-sulfo-naphthalene-2-diazonium-betaine

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: potash / 200 - 280 °C 2: water; natrium carbonate; sodium nitrite / anschliessend man versetzt diese Loesung mit Salzsaeure und eintraegt wss.Natriumnitrit View Scheme

7-Amino-1,3-naphthalenedisulfonic acid Chemical Properties

7-Amino-1,3-naphthalenedisulfonic acid Uses

7-Amino-1,3-naphthalenedisulfonic acid Consensus Reports

7-Amino-1,3-naphthalenedisulfonic acid Safety Profile