1,8-Dihydroxynaphthylene-3,6-disulfonic acid supplier

Name
1,8-Dihydroxynaphthylene-3,6-disulfonic acid
EINECS 205-712-7
CAS No. 148-25-4
Density 1.929 g/cm³
Solubility
Melting Point
Formula C₁₀H₈O₈S₂
Boiling Point 429.2°C (rough estimate)
Molecular Weight 320.301
Flash Point
Transport Information
Appearance
Safety
Risk Codes R22
Molecular Structure
Hazard Symbols Xn
Synonyms 4,5-Dihydroxy-2,7-naphthalenedisulfonic acid;C.I. 16655;Chromotropic acid;
PSA 165.96000
LogP 2.90600

Synthetic route

: 3316-02-7
1-naphthol-3,6,8-trisulphonic acid

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
With alkali hydroxide at 170 - 220℃;

: 90-20-0
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
With potassium hydroxide at 260 - 280℃;
With sodium hydroxide at 260 - 280℃;
With sulfuric acid at 145℃;

: 6362-11-4
1,8-diamino-3,6-naphthalenedisulfonic acid

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
With diluted alkali at 260 - 280℃;
With diluted acid at 150 - 160℃;

: 2,2-dioxo-2λ6-naphth[1,8-cd][1,2]oxathiol-4,7-disulfonic acid

alkali hydroxides: alkali hydroxides

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
at 170 - 220℃; beim Verschmelzen;

8-chloro-naphthol-(1)-disulfonic acid-(3.6): 8-chloro-naphthol-(1)-disulfonic acid-(3.6)

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
With alkali beim Schmelzen;

naphthol-(1)-sultonedisulfonic acid: naphthol-(1)-sultonedisulfonic acid

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
With alkali hydroxide at 170 - 220℃;

trisodium-salt of/the/ 8-hydroxy-naphthalene-trisulfonic acid-(1,3,6)): trisodium-salt of/the/ 8-hydroxy-naphthalene-trisulfonic acid-(1,3,6))

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
With sodium hydroxide; water at 200℃;

: 90-20-0
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

diluted alkaline solution: diluted alkaline solution

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
at 260 - 280℃;

: 3316-02-7
1-naphthol-3,6,8-trisulphonic acid

potash: potash

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
at 170 - 220℃;

: 6362-11-4
1,8-diamino-3,6-naphthalenedisulfonic acid

alkaline solution: alkaline solution

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
at 260 - 280℃;

: 90-21-1
4-chloro-5-hydroxy-naphthalene-2,7-disulfonic acid

alkali: alkali

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
beim Verschmelzen;

: 6362-11-4
1,8-diamino-3,6-naphthalenedisulfonic acid

diluted acid: diluted acid

: 148-25-4
chromatotropic acid

Conditions

Conditions	Yield
at 150 - 160℃;

: 188641-21-6
3-[(2,6-dibromo-4-methylphenyl)azo]-6[(2-sulfophenyl)azo]-4,5-dihydoxynaphthalene-2,7-disulfonic acid

A: 148-25-4
chromatotropic acid

B: 1611-92-3
3,5-dibromotoluene

C: 98-11-3
benzenesulfonic acid

Conditions

Conditions	Yield
With potassium metaperiodate In water

...Expand

: 3-(2,6-dibromo-4-sulfophenylazo)-6-(2-arsenophenylazo)-4,5-dihydroxynaphthalene-2,7-disulfonic acid

A: 148-25-4
chromatotropic acid

B: 98-05-5
phenylarsonic acid

C: 3,5-dibromobenzenesulfonic acid

Conditions

Conditions	Yield
With potassium metaperiodate; bovine serum albumin In ethanol; water at 75℃; for 0.0833333h; pH=2; aq. buffer; Enzymatic reaction;

...Expand

: 1-aminonaphthalene-3,6,8-trisulphonic acid trisodium salt

A: 148-25-4
chromatotropic acid

B: 90-20-0
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

C: C10H9NO7S2

Conditions

Conditions	Yield
Stage #1: 1-aminonaphthalene-3,6,8-trisulphonic acid trisodium salt With sodium hydroxide In methanol at 180 - 200℃; under 21002.1 Torr; Stage #2: With sulfuric acid In methanol

...Expand

: 91-20-3
naphthalene

A: 148-25-4
chromatotropic acid

B: 90-20-0
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

C: C10H9NO7S2

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: sulfur trioxide; sulfuric acid / 65 - 150 °C 1.2: 40 °C 2.1: hydrogen / 170 °C / 150015 Torr 3.1: sodium hydroxide / methanol / 180 - 200 °C / 21002.1 Torr View Scheme

...Expand

: 637011-53-1
4-(4-acetylamino-2-sulphophenylazo)-2,5-di(2-acetoxyethoxy)aniline

: 148-25-4
chromatotropic acid

: 697756-74-4
C26H25N5O15S3

Conditions

Conditions	Yield
Stage #1: 4-(4-acetylamino-2-sulphophenylazo)-2,5-di(2-acetoxyethoxy)aniline With hydrogenchloride; aminosulfonic acid; sodium nitrite In water; acetone at 20℃; for 1h; pH=10; Stage #2: chromatotropic acid With lithium hydroxide In water; acetone at 0 - 10℃; pH=7 - 8; Stage #3: With hydrogenchloride; lithium hydroxide more than 3 stages;	67%

: 148-25-4
chromatotropic acid

: 206268-72-6
4-bromo-5-nitrophthalonitrile

: 9,10-dicyanobenzo[b]naphtho[1,8-ef][1,4]dioxepin-2,5-disulfonic acid

Conditions

Conditions	Yield
With potassium carbonate In water; N,N-dimethyl-formamide at 90℃; for 2h;	63.8%

: 148-25-4
chromatotropic acid

: 4-Dodecyl-benzenediazonium

: Sodium; 6-(4-dodecyl-phenylazo)-4,5-dihydroxy-naphthalene-2-sulfonate

Conditions

Conditions	Yield
pH 5;	37%

: 14368-49-1
p-nitrobenzenediazonium

: 148-25-4
chromatotropic acid

: 1681-60-3
3-(4-amino-phenylazo)-4,5-dihydroxy-naphthalene-2,7-disulfonic acid ; sodium salt

Conditions

Conditions	Yield
With sodium sulfide

: 148-25-4
chromatotropic acid

: 19262-82-9
4-ethoxybenzenediazonium

: 3-(4-ethoxy-phenylazo)-4,5-dihydroxy-naphthalene-2,7-disulfonic acid

Conditions

Conditions	Yield
With sodium acetate

: 148-25-4
chromatotropic acid

: 100-34-5
benzene diazonium chloride

: 13432-13-8
3-benzeneazo-4,5-dihydroxynaphthalene-2,7-disulfonic acid

Conditions

Conditions	Yield
With sodium carbonate at 0 - 5℃;
With sodium carbonate at 0 - 5℃;

: 148-25-4
chromatotropic acid

: 546-74-7
sodium ethyl sulfate

: 6837-94-1
4-ethoxy-5-hydroxy-naphthalene-2,7-disulfonic acid

Conditions

Conditions	Yield
With alkali at 180 - 200℃;

: 148-25-4
chromatotropic acid

: 4,5,7-trihydroxy-naphthalene-2-sulfonic acid

Conditions

Conditions	Yield
With alkali hydroxide

: 148-25-4
chromatotropic acid

: 3-chloro-4,5-dihydroxy-naphthalene-2,7-disulfonic acid

Conditions

Conditions	Yield
With sodium hypochlorite

: 148-25-4
chromatotropic acid

: 111796-72-6
4,5-dihydroxy-3-(2-hydroxy-4-sulfo-[1]naphthylazo)-naphthalene-2,7-disulfonic acid

Conditions

Conditions	Yield
With calcium hydroxide; sodium hydroxide anschliessend mit diazotierter 4-Amino-3-hydroxy-naphthalin-1-sulfonsaeure;

: 148-25-4
chromatotropic acid

: 3-(4-anilino-3-sulfo-phenylazo)-4,5-dihydroxy-naphthalene-2,7-disulfonic acid

Conditions

Conditions	Yield
With calcium hydroxide; sodium hydroxide anschliessend mit diazotiertem 5-Amino-2-anilino-benzolsulfonsaeure in wss.Na2CO3;

: 148-25-4
chromatotropic acid

: 102160-30-5
4,5-dihydroxy-6-nitroso-3-(4-sulfo-[1]naphthylazo)-naphthalene-2,7-disulfonic acid

Conditions

Conditions	Yield
With hydrogenchloride; sodium nitrite anschliessend mit diazotierter 4-Amino-naphthalin-1-sulfonsaeure;

: 148-25-4
chromatotropic acid

: 4,5,4',5'-tetrahydroxy-3,3'-(3,3'-dihydroxy-biphenyl-4,4'-diyl-bis-azo)-bis-naphthalene-2,7-disulfonic acid

Conditions

Conditions	Yield
With calcium hydroxide beim nachfolgenden Behandeln mit diazotiertem 3,3'-Dimethoxy-benzidin, CuSO4 und wss. NH3;

: 96-50-4
2-thiazolylamine

: 148-25-4
chromatotropic acid

: 28467-51-8
4,5-dihydroxy-3-thiazol-2-ylazo-naphthalene-2,7-disulfonic acid

Conditions

Conditions	Yield
(i) NaNO2, aq. HCl, (ii) /BRN= 1827764/; Multistep reaction;

: 148-25-4
chromatotropic acid

diazotized 4-amino-5-hydroxy-naphthalene-2,7-disulfonic acid: diazotized 4-amino-5-hydroxy-naphthalene-2,7-disulfonic acid

: 480-29-5
4,5,5'-trihydroxy-3,4'-azo-bis-naphthalene-2,7-disulfonic acid

Conditions

Conditions	Yield
With sodium acetate

: 148-25-4
chromatotropic acid

alkali: alkali

1.3.8-trioxy-naphthalene-sulfonic acid-(6): 1.3.8-trioxy-naphthalene-sulfonic acid-(6)

: 148-25-4
chromatotropic acid

diazotized <2-amino-phenyl>-arsonic acid: diazotized <2-amino-phenyl>-arsonic acid

: 1668-00-4
arsenazo III

1,8-Dihydroxynaphthylene-3,6-disulfonic acid Chemical Properties

IUPAC Name: 4,5-Dihydroxynaphthalene-2,7-disulfonic acid
The molecular structure of 2,7-Naphthalenedisulfonicacid, 4,5-dihydroxy- (CAS NO.148-25-4) is
.
Empirical Formula: C₁₀H₈O₈S₂
Molecular Weight: 320.2957
Einecs: 205-712-7
Density: 1.929 g/cm³
Freely Rotating Bonds: 4
Polar Surface Area: 121.96 Å²
Index of Refraction: 1.756
Molar Refractivity: 68.06 cm³
Molar Volume: 165.9 cm³
Polarizability: 26.98 ×10^-24cm³
Surface Tension: 104.4 dyne/cm
Canonical SMILES: C1=C2C=C(C=C(C2=C(C=C1S(=O)(=O)O)O)O)S(=O)(=O)O
InChI: InChI=1S/C10H8O8S2/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8/h1-4,11-12H,(H,13,14,15)(H,16,17,18)
InChIKey: HLVXFWDLRHCZEI-UHFFFAOYSA-N

1,8-Dihydroxynaphthylene-3,6-disulfonic acid Uses

2,7-Naphthalenedisulfonicacid, 4,5-dihydroxy- (CAS NO.148-25-4) is used as organic intermediate.

1,8-Dihydroxynaphthylene-3,6-disulfonic acid Specification

The Cas Register Number of 2,7-Naphthalenedisulfonicacid, 4,5-dihydroxy- is 148-25-4.The chemical synonyms of 2,7-Naphthalenedisulfonicacid, 4,5-dihydroxy- (CAS NO.148-25-4) are 4,5-Dihydroxy-2,7-naphthalenedisulfonic acid ; and 4,5-Dihydroxynaphthalene-2,7-disulphonic acid .

Product Name

1,8-Dihydroxynaphthylene-3,6-disulfonic acid

Synthetic route

1,8-Dihydroxynaphthylene-3,6-disulfonic acid Chemical Properties

1,8-Dihydroxynaphthylene-3,6-disulfonic acid Uses

1,8-Dihydroxynaphthylene-3,6-disulfonic acid Specification

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