6-Hydroxynaphthalene-2-sulphonic acid supplier

Name
6-Hydroxynaphthalene-2-sulphonic acid
EINECS 202-209-4
CAS No. 93-01-6
Article Data54
CAS DataBase
Density 1.549 g/cm³
Solubility soluble AUTOIGNITION

Melting Point >300 ºC(lit.)

Formula C10H8 O4 S

Boiling Point

Molecular Weight 224.237

Flash Point

Transport Information 25kgs

Appearance White to gray-yellow powder

Safety Poison by ingestion. Moderately toxic by subcutaneous route. When heated to decomposition it emits toxic fumes of SO_x. See also SULFONATES.

Risk Codes 36/37/38

Molecular Structure

Hazard Symbols TSCA listed UN NO.

Synonyms 2-Hydroxy-6-naphthalenesulfonicacid; 2-Naphthol-6-sulfonic acid; 6-Hydroxy-2-naphthalenesulfonic acid; NSC5871; Schaeffer's acid; Schaeffer's b-acid; Schaeffer's b-naphtholsulfonic acid; Schaffer's acid; b-Naphthol-6-sulfonic acid; b-Naphtholsulfonic acid S

PSA 82.98000

LogP 2.87290

Synthetic route

135-19-3
β-naphthol

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

Conditions

Conditions Yield

With sulfuric acid

With 1,4-dioxane; sulfur trioxide; 1,2-dichloro-ethane

With chlorosulfonic acid; 1,1,2,2-tetrachloroethane at 100℃;

With sulfuric acid at 80℃; for 6h; Temperature; 128 g

80073-10-5
1-acetamino-2-hydroxy-naphthalene-6-sulphonic acid

118-28-5
1-amino-2-ethoxy-naphthalene-6-sulphonic acid

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

2-hydroxy-naphthalene-disulfonic acid-(1.6)

2-hydroxy-naphthalene-disulfonic acid-(1.6)

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

Conditions

Conditions Yield

With mineral acid

80073-10-5
1-acetamino-2-hydroxy-naphthalene-6-sulphonic acid

75-00-3
chloroethane

118-28-5
1-amino-2-ethoxy-naphthalene-6-sulphonic acid

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

Conditions

Conditions Yield

With potassium hydroxide

...Expand

135-19-3
β-naphthol

A

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

B

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

Conditions

Conditions Yield

With sulfuric acid

With sulfuric acid

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);

2-oxy-naphthoic acid-(1)-sulfonic acid-(6)

2-oxy-naphthoic acid-(1)-sulfonic acid-(6)

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

Conditions

Conditions Yield

With water at 60℃;

potassium-<2-hydroxy-naphthalene sulfonate-(1)>

potassium-<2-hydroxy-naphthalene sulfonate-(1)>

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

Conditions

Conditions Yield

With quartz sand at 200℃;

potassium naphthyl-(2)-sulfate

potassium naphthyl-(2)-sulfate

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

Conditions

Conditions Yield

With potassium hydrogensulfate at 200℃;

613-80-9
2,2'-Dinaphthyl ether

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

Conditions

Conditions Yield

With sulfuric acid at 90 - 100℃;

86-60-2
7-aminonaphthalene-1-sulfonic acid

A

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

B

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

Conditions

Conditions Yield

With sodium metabisulfite man saeuert mit Salzsaeure oder Schwefelsaeure und trennt von der gleichzeitig entstehenden Nebenprodukt;

With sodium metabisulfite man saeuert mit Salzsaeure oder Schwefelsaeure und trennt von der gleichzeitig entstehenden Nebenprodukt;

With sodium metabisulfite man saeuert mit Salzsaeure oder Schwefelsaeure und trennt von der gleichzeitig entstehenden Nebenprodukt;

135-19-3
β-naphthol

A

92-40-0
2-hydroxynaphthalene-7-sulfonic acid

B

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

Conditions

Conditions Yield

With sulfuric acid at 100 - 105℃;

581-75-9
naphthalene-2,6-disulfonic acid

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

Conditions

Conditions Yield

With potassium carbonate

3.5-dioxy-naphthoic acid-(2)-sulfonic acid-(7)

3.5-dioxy-naphthoic acid-(2)-sulfonic acid-(7)

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

Conditions

Conditions Yield

With sodium metabisulfite

sodium-salt of/the/ 2-hydroxy-1-diazonio-naphthalene sulfonate-(6)

sodium-salt of/the/ 2-hydroxy-1-diazonio-naphthalene sulfonate-(6)

A

69422-83-9
2-naphthol-1,6-disulfonic acid

B

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

Conditions

Conditions Yield

With water; sodium sulfite und Erwaermen des Reaktionsgemisches unter Zusatz von Kupfer(II)-sulfat und Kupfer-Pulver;

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

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

Conditions

Conditions Yield

With sodium amalgam

93-00-5
Bronner acid

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

Conditions

Conditions Yield

With hydrogenchloride; sodium metabisulfite

135-19-3
β-naphthol

A

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

B
naphthol-(2)-disulfonic acid-(3.6) and naphthol-(2)-disulfonic acid-(6.8)

naphthol-(2)-disulfonic acid-(3.6) and naphthol-(2)-disulfonic acid-(6.8)

Conditions

Conditions Yield

With sulfuric acid

7664-93-9
sulfuric acid

135-19-3
β-naphthol

A

567-47-5
2-hydroxy-naphthalene-1-sulfonic acid

B

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

C
7-hydroxy-naphthalene-sulfonic acid-(1)

7-hydroxy-naphthalene-sulfonic acid-(1)

D
2-hydroxy-naphthalene-disulfonic acid-(1.6)

2-hydroxy-naphthalene-disulfonic acid-(1.6)

Conditions

Conditions Yield

at 20 - 30℃;

...Expand

7664-93-9
sulfuric acid

135-19-3
β-naphthol

metaboric acid

metaboric acid

A

567-47-5
2-hydroxy-naphthalene-1-sulfonic acid

B

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

C
7-hydroxy-naphthalene-sulfonic acid-(1)

7-hydroxy-naphthalene-sulfonic acid-(1)

D
2-hydroxy-naphthalene-disulfonic acid-(1.6)

2-hydroxy-naphthalene-disulfonic acid-(1.6)

Conditions

Conditions Yield

at 0 - 85℃;

...Expand

135-76-2
sodium 2-naphthol-6-sulfonate

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

Conditions

Conditions Yield

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

6-Sulfo-naphthalen-2-ol anion

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

Conditions

Conditions Yield

With oxonium at 293℃; Rate constant;

135-19-3
β-naphthol

A

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

B

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

C

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

D

148-75-4
2-naphthol-3,6-disulphonic acid

Conditions

Conditions Yield

With sulfuric acid at 90 - 110℃; Kinetics; Product distribution; heterogeneous sulfonation;

...Expand

7790-94-5
chlorosulfonic acid

630-20-6
1,1,1,2-tetrachoroethane

135-19-3
β-naphthol

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

Conditions

Conditions Yield

at 130℃;

...Expand

7732-18-5
water

618-06-4
m-sulfanilic acid diazonium salt

A

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

B

84-87-7
1-hydroxy-4-naphthalenesulfonate

C

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

Conditions

Conditions Yield

at 0℃; vom pH 4.6-13.2;

...Expand

7664-93-9
sulfuric acid

135-19-3
β-naphthol

A

92-40-0
2-hydroxynaphthalene-7-sulfonic acid

B

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

Conditions

Conditions Yield

at 100 - 105℃;

...Expand

7664-93-9
sulfuric acid

135-19-3
β-naphthol

A

567-47-5
2-hydroxy-naphthalene-1-sulfonic acid

B

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

C
7-hydroxy-naphthalene-sulfonic acid-(2)

7-hydroxy-naphthalene-sulfonic acid-(2)

D
7-hydroxy-naphthalene-sulfonic acid-(1)

7-hydroxy-naphthalene-sulfonic acid-(1)

Conditions

Conditions Yield

at 50 - 55℃;

...Expand

2-hydroxy-6-sulfo-[1]naphthoic acid

7732-18-5
water

A

124-38-9
carbon dioxide

B

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

Conditions

Conditions Yield

at 60℃;

...Expand

7664-93-9
sulfuric acid

135-19-3
β-naphthol

A

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

B

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

...Expand

7664-93-9
sulfuric acid

567-47-5
2-hydroxy-naphthalene-1-sulfonic acid

A

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

B

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

...Expand

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

62-53-3
aniline

23481-33-6
6-hydroxy-5-phenylazo-naphthalene-2-sulfonic acid

Conditions

Conditions Yield

Stage #1: aniline With hydrogenchloride; sodium nitrite In water at 0 - 5℃; for 0.25h;
Stage #2: 2-naphthol-6-sulfonic acid With sodium carbonate; sodium hydroxide In water at 0 - 20℃; for 1.5h; pH=10; 85.7%

14090-74-5
1-nitroso-2-hydroxy-naphthalene-6-sulphonic acid

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

80073-10-5
1-acetamino-2-hydroxy-naphthalene-6-sulphonic acid

Conditions

Conditions Yield

82%

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

3-{4-[(E)-2-(2,4-Dichloro-phenyl)-vinyl]-phenyl}-2-mercapto-4-oxo-3,4-dihydro-quinazoline-6-diazonium

5-(3-{4-[(E)-2-(2,4-Dichloro-phenyl)-vinyl]-phenyl}-2-mercapto-4-oxo-3,4-dihydro-quinazolin-6-ylazo)-6-hydroxy-naphthalene-2-sulfonic acid

Conditions

Conditions Yield

With sodium carbonate; sodium chloride In water 1.) 0-5 deg C, 3 h; 2.) 60 deg C; 81%

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

3028-27-1
4-chloro-6-diazo-2,4-cyclohexadienone

1-(2-hydroxy-5-chlorophenylazo)-2-hydroxy-6-sulfonaphthalene

Conditions

Conditions Yield

With potassium hydroxide a) RT, 4 h, b) 40 to 50 deg C, 4 h; 70%

56765-79-8
3,4-dicyanoaniline

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

4-[(Z)-(2-hydroxy-6-sulfo-1-naphthyl)diazenyl]phthalonitrile

Conditions

Conditions Yield

Stage #1: 2-naphthol-6-sulfonic acid With sodium hydroxide In water
Stage #2: With sulfuric acid In water
Stage #3: 3,4-dicyanoaniline Further stages; 68%

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

95-55-6
2-amino-phenol

861048-50-2
1-[(2-hydroxyl)phenylazo]-2-naphthol-6-sulfonic acid

Conditions

Conditions Yield

Stage #1: 2-amino-phenol With hydrogenchloride; sodium nitrite In water at 0 - 5℃; for 0.25h;
Stage #2: 2-naphthol-6-sulfonic acid With sodium carbonate; sodium hydroxide In water at 0 - 20℃; for 1.5h; pH=10; 65.5%

541-41-3
chloroformic acid ethyl ester

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

6-ethoxycarbonyloxy-naphthalene-2-sulfonic acid

Conditions

Conditions Yield

With sodium hydroxide

109-83-1
(2-hydroxyethyl)(methyl)amine

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

6-[(2-hydroxy-ethyl)-methyl-amino]-naphthalene-2-sulfonic acid

Conditions

Conditions Yield

With ammonia; water; sodium hydrogensulfite

2684-02-8
benzenediazonium

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

23481-33-6
6-hydroxy-5-phenylazo-naphthalene-2-sulfonic acid

Conditions

Conditions Yield

beim Behandeln von Benzoldiazoniumsalz;

57573-52-1
4-methylbenzene diazonium

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

5859-07-4
6-hydroxy-5-p-tolylazo-naphthalene-2-sulfonic acid

67-66-3
chloroform

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

10336-92-2
5-formyl-6-hydroxy-naphthalene-2-sulfonic acid

Conditions

Conditions Yield

With sodium hydroxide

17333-74-3
2-methylbenzene diazonium

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

74782-97-1
6-hydroxy-5-o-tolylazo-naphthalene-2-sulfonic acid

305-80-6
4-diazobenzenesulfonic acid

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

5859-11-0
FD and C Yellow No. 6

Conditions

Conditions Yield

in alkal. Loesung;

537-65-5
4,4'-diaminodiphenylamine

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

6,6'-(4,4'-imino-dianilino)-bis-naphthalene-2-sulfonic acid

Conditions

Conditions Yield

nach dem Sulfit-Verfahren;

87-02-5
1-hydroxy-6-amino-3-naphthalenesulfonic acid

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

93930-09-7
thiosulfuric acid S-(2,5-diamino-phenyl ester)

Conditions

Conditions Yield

With sodium hydrogensulfite

88-45-9
2,5-diaminobenzenesulfonic acid

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

6-(4-amino-3-sulfo-anilino)-naphthalene-2-sulfonic acid

Conditions

Conditions Yield

nach dem Sulfit-Verfahren;

119-70-0
4,4'-diaminodiphenylamine-2'-sulfonic acid

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

5-(6-sulfo-[2]naphthylamino)-2-[4-(6-sulfo-[2]naphthylamino)-anilino]-benzenesulfonic acid

Conditions

Conditions Yield

nach dem Sulfit-Verfahren;

91-30-5
4-aminodiphenylamine-2-sulfonic acid

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

6-(4-anilino-3-sulfo-anilino)-naphthalene-2-sulfonic acid

Conditions

Conditions Yield

nach dem Sulfit-Verfahren;

593-51-1
methylamine hydrochloride

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

64375-16-2
6-methylamino-naphthalene-2-sulfonic acid

Conditions

Conditions Yield

With sodium hydroxide at 180 - 200℃; im Autoklaven;

benzenediazonium nitrate

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

23481-33-6
6-hydroxy-5-phenylazo-naphthalene-2-sulfonic acid

142-04-1
aniline hydrochloride

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

62-53-3
aniline

A

135-88-6
N-Phenyl-2-naphthylamine

B

20096-53-1
2-anilinonaphthalene-6-sulfonic acid

Conditions

Conditions Yield

at 190 - 200℃; das Natriumsalz reagiert;

...Expand

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

100-63-0
phenylhydrazine

7H-benzo[c]carbazole-3-sulfonic acid

Conditions

Conditions Yield

With sodium disulfite Behandeln des Reaktionsprodukts mit Natronlauge;

6-Hydroxynaphthalene-2-sulphonic acid Chemical Properties
6-Hydroxy-2-Naphalenesulfonic Acid (93-01-6) is also named as 6-Hydroxynaphthalene-2-sulphonic acid;2-Hydroxy-6-naphthalenesulfonic acid;2-hydroxy-6-naphthalenesulfonicacid;2-Hydroxynaphthalene-6-sulfonic acid;2-Naphtol-6-sulfosaure;6-hydroxy-2-naphthalenesulfonicaci;Baum's acid;beta-Naphthol-6-sulfonic acid;beta-naphthol-6-sulfonicacid,and so on.6-Hydroxy-2-Naphalenesulfonic Acid (93-01-6) is usually lamellae.
CAS: 93-01-6
Molecular Formula: C₁₀H₈O₄S
Molecular Weight: 224.23
Molecular structure:
EINECS: 205-218-1
Melting point: >300 °C(lit.)
Index of Refraction: 1.703
Molar Refractivity: 56.18 cm³
Molar Volume: 144.7 cm³
Polarizability: 22.27 10^-24cm³
Surface Tension: 71.1 dyne/cm
Density: 1.549 g/cm³
6-Hydroxynaphthalene-2-sulphonic acid Uses
6-Hydroxy-2-Naphalenesulfonic Acid (93-01-6) is commonly used for the manufacture of acidic dyes and food dyes.
6-Hydroxynaphthalene-2-sulphonic acid Toxicity Data With Reference
1.
orl-mus LDLo:250 mg/kg
    ZHINAV    Zeitschrift fuer Hygiene und Infektionskrankheiten. 64 (1909),113.
2.
scu-mus LDLo:650 mg/kg
    ZHINAV    Zeitschrift fuer Hygiene und Infektionskrankheiten. 64 (1909),113.
6-Hydroxynaphthalene-2-sulphonic acid Consensus Reports
Reported in EPA TSCA Inventory.
6-Hydroxynaphthalene-2-sulphonic acid Safety Profile
Poison by ingestion. Moderately toxic by subcutaneous route. When heated to decomposition it emits toxic fumes of SO_x.
Hazard Codes: Xi
Risk Statements: 36/37/38
Safety Statements: 26-36
WGK Germany: 3

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Conditions	Yield
With sulfuric acid
With 1,4-dioxane; sulfur trioxide; 1,2-dichloro-ethane
With chlorosulfonic acid; 1,1,2,2-tetrachloroethane at 100℃;
With sulfuric acid at 80℃; for 6h; Temperature;	128 g

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);

Conditions	Yield
With sodium metabisulfite man saeuert mit Salzsaeure oder Schwefelsaeure und trennt von der gleichzeitig entstehenden Nebenprodukt;
With sodium metabisulfite man saeuert mit Salzsaeure oder Schwefelsaeure und trennt von der gleichzeitig entstehenden Nebenprodukt;
With sodium metabisulfite man saeuert mit Salzsaeure oder Schwefelsaeure und trennt von der gleichzeitig entstehenden Nebenprodukt;

1.		orl-mus LDLo:250 mg/kg		ZHINAV Zeitschrift fuer Hygiene und Infektionskrankheiten. 64 (1909),113.
2.		scu-mus LDLo:650 mg/kg		ZHINAV Zeitschrift fuer Hygiene und Infektionskrankheiten. 64 (1909),113.

Product Name

6-Hydroxynaphthalene-2-sulphonic acid

Synthetic route

6-Hydroxynaphthalene-2-sulphonic acid Chemical Properties

6-Hydroxynaphthalene-2-sulphonic acid Uses

6-Hydroxynaphthalene-2-sulphonic acid Toxicity Data With Reference

6-Hydroxynaphthalene-2-sulphonic acid Consensus Reports

6-Hydroxynaphthalene-2-sulphonic acid Safety Profile

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