CAS No.35400-55-6,5-amino-4-hydroxynaphthalene-2-sulphonic acid Suppliers

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Shandong Hanjiang Chemical Co., Ltd.

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Henan Tianfu Chemical Co., Ltd.

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Nanjing Raymon Biotech Co., Ltd.

2-Naphthalenesulfonicacid, 5-amino-4-hydroxy- Storage:Store in dry and cool condition Package:25kg or according to cutomer's demand Application:Chemical research/Pharmaceutical intermediates Transportation:By Sea,by Air,By courier like DHL or Fedx. P

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Synthetic route

: 457629-68-4
4,5-diamino-naphthalene-2-sulfonic acid

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

Conditions

Conditions	Yield
With sulfuric acid at 120℃;

: 7664-93-9
sulfuric acid

: 457629-68-4
4,5-diamino-naphthalene-2-sulfonic acid

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

Conditions

Conditions	Yield
at 120℃; im geschlossenen Gefaess;
at 120℃; im geschlossenen Gefaess;

acidic sodium salt of/the/ 8-amino-naphthol-(1)-disulfonic acid-(3.5): acidic sodium salt of/the/ 8-amino-naphthol-(1)-disulfonic acid-(3.5)

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

Conditions

Conditions	Yield
With water; zinc

acidic sodium salt of/the/ naphthylamine-(1)-disulfonic acid-(6.8): acidic sodium salt of/the/ naphthylamine-(1)-disulfonic acid-(6.8)

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

Conditions

Conditions	Yield
With potassium hydroxide at 180 - 200℃;

: 41131-26-4
8-Aminonaphthalene-1,3-disulfonic acid

KOH-solution: KOH-solution

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

Conditions

Conditions	Yield
at 180 - 200℃;

: 131-14-6
2,6-diamino-9,10-anthraquinone

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: C34H20N6O10S2(2-)*2Na(1+)

Conditions

Conditions	Yield
Stage #1: 2,6-diamino-9,10-anthraquinone With sulfuric acid at 20 - 40℃; for 0.666667h; Stage #2: With nitrosylsulfuric acid at 20 - 25℃; for 4h; Stage #3: 5-amino-4-hydroxy-2-naphthalenesulphonic acid at 5 - 10℃; pH=0.5 - 1;	90%
Stage #1: 2,6-diamino-9,10-anthraquinone With sulfuric acid at 40℃; for 0.5h; Stage #2: With nitrosylsulfuric acid at 20 - 25℃; for 4h; Stage #3: 5-amino-4-hydroxy-2-naphthalenesulphonic acid With sodium hydroxide at 5 - 10℃; pH=0.5 - 1;

: 131-14-6
2,6-diamino-9,10-anthraquinone

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: C34H20N6O10S2(2-)*2Na(1+)

Conditions

Conditions	Yield
Stage #1: 2,6-diamino-9,10-anthraquinone With sulfuric acid at 20 - 40℃; for 0.666667h; Stage #2: With nitrosylsulfuric acid at 20 - 25℃; for 4h; Stage #3: 5-amino-4-hydroxy-2-naphthalenesulphonic acid at 0 - 5℃; pH=8 - 9;	80%
Stage #1: 2,6-diamino-9,10-anthraquinone With sulfuric acid at 40℃; for 0.5h; Stage #2: With nitrosylsulfuric acid at 20 - 25℃; for 4h; Stage #3: 5-amino-4-hydroxy-2-naphthalenesulphonic acid With sodium hydroxide at 0 - 5℃; pH=8 - 9;

: 98-44-2
amino-benzene-1,4-disulfonic acid

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: 1458587-10-4
C16H13N3O10S3

Conditions

Conditions	Yield
Stage #1: amino-benzene-1,4-disulfonic acid With hydrogenchloride; sodium nitrite In water at 5℃; Stage #2: 5-amino-4-hydroxy-2-naphthalenesulphonic acid With sodium hydroxide In water at 0 - 20℃; for 3.5h; pH=0.8 - 1.1;	70%
Stage #1: amino-benzene-1,4-disulfonic acid With hydrogenchloride; sodium nitrite In water at 5℃; Stage #2: 5-amino-4-hydroxy-2-naphthalenesulphonic acid With sodium hydroxide at 0 - 20℃; for 3.5h; pH=0.8 - 1.1;

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: 5,6-diamino-4-hydroxynaphthalene-2-sulfonic acid

Conditions

Conditions	Yield
Stage #1: 5-amino-4-hydroxy-2-naphthalenesulphonic acid With sodium carbonate; sodium nitrite; 4-aminobenzene sulfonic acid; hydrogenchloride In water at 5 - 20℃; Stage #2: With sodium pyrosulfate at 50℃; for 4h; Further stages.;	45%

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: 8-hydroxy-6-sulfo-naphthalene-1-diazonium-betaine

Conditions

Conditions	Yield
With cis-nitrous acid

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: 9-hydroxy-2-(1-hydroxy-naphthalen-2-yl)-3H-naphtho[1,2-d]imidazole-7-sulfonic acid

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: 4-aminobenzenesulfonic acid; NaNO2; Na2CO3 / HCl / H2O / 5 - 20 °C 1.2: 45 percent / Na2S2O7 / 4 h / 50 °C 2.1: NaHSO3 / H2O; ethanol / Heating View Scheme

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: 9-hydroxy-2-(2-hydroxy-naphthalen-1-yl)-3H-naphtho[1,2-d]imidazole-7-sulfonic acid

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: 4-aminobenzenesulfonic acid; NaNO2; Na2CO3 / HCl / H2O / 5 - 20 °C 1.2: 45 percent / Na2S2O7 / 4 h / 50 °C 2.1: 75 percent / sodium bisulfite / ethanol; H2O / 1 h / Heating View Scheme

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: 9-hydroxy-2-(2-hydroxy-3',4'-dimethyl-biphenyl-3-yl)-3H-naphtho[1,2-d]imidazole-7-sulfonic acid; hydrochloride

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: 4-aminobenzenesulfonic acid; NaNO2; Na2CO3 / HCl / H2O / 5 - 20 °C 1.2: 45 percent / Na2S2O7 / 4 h / 50 °C 2.1: NaHSO3 / ethanol; H2O / Heating View Scheme

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: 1458587-11-5
C22H17N3O12S4

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: hydrogenchloride; sodium nitrite / water / 5 °C 1.2: 3.5 h / 0 - 20 °C / pH 0.8 - 1.1 2.1: sodium hydroxide / water / 2 h / 20 °C / pH 11 - 12 View Scheme
Multi-step reaction with 2 steps 1.1: sodium nitrite; hydrogenchloride / water / 5 °C 1.2: 3.5 h / 0 - 20 °C / pH 0.8 - 1.1 2.1: sodium hydroxide / 2 h / 20 °C / pH 11 - 12 View Scheme

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: C46H24N10O22S6(6-)*6Na(1+)

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: hydrogenchloride; sodium nitrite / water / 5 °C 1.2: 3.5 h / 0 - 20 °C / pH 0.8 - 1.1 2.1: sulfuric acid / 0.5 h / 40 °C 2.2: 4 h / 20 - 25 °C 2.3: 0 - 5 °C / pH 8 - 9 View Scheme
Multi-step reaction with 2 steps 1.1: sodium nitrite; hydrogenchloride / water / 5 °C 1.2: 3.5 h / 0 - 20 °C / pH 0.8 - 1.1 2.1: sulfuric acid / 0.67 h / 20 - 40 °C 2.2: 4 h / 20 - 25 °C 2.3: 0 - 5 °C / pH 8 - 9 View Scheme

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: C32H18N5O19S6(5-)*5Na(1+)

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: hydrogenchloride; sodium nitrite / water / 5 °C 1.2: 3.5 h / 0 - 20 °C / pH 0.8 - 1.1 2.1: sodium hydroxide / water / 2 h / 20 °C / pH 11 - 12 3.1: hydrogenchloride; sodium nitrite / water / 2 h / 0 °C 3.2: 5 h / 0 - 5 °C / pH 1.5 View Scheme
Multi-step reaction with 3 steps 1.1: sodium nitrite; hydrogenchloride / water / 5 °C 1.2: 3.5 h / 0 - 20 °C / pH 0.8 - 1.1 2.1: sodium hydroxide / 2 h / 20 °C / pH 11 - 12 3.1: sodium nitrite; hydrogenchloride / water / 2 h / 0 °C 3.2: 5 h / 0 - 5 °C / pH 1.5 View Scheme

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: C38H20N8O24S7(6-)*6Na(1+)

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1.1: hydrogenchloride; sodium nitrite / water / 5 °C 1.2: 3.5 h / 0 - 20 °C / pH 0.8 - 1.1 2.1: sodium hydroxide / water / 2 h / 20 °C / pH 11 - 12 3.1: hydrogenchloride; sodium nitrite / water / 2 h / 0 °C 3.2: 5 h / 0 - 5 °C / pH 1.5 4.1: sodium hydroxide / water / 1 h / 40 °C / pH 5 - 6 View Scheme

: C16H11NO9S3(2-)*2Na(1+)

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: C30H16N5O18S5(5-)*5Na(1+)

Conditions

Conditions	Yield
Stage #1: C16H11NO9S3(2-)*2Na(1+) With hydrogenchloride; acetic acid; sodium nitrite In water at 0 - 5℃; Stage #2: 5-amino-4-hydroxy-2-naphthalenesulphonic acid In water at 0 - 5℃; pH=0.8 - 1; Further stages;
Stage #1: C16H11NO9S3(2-)*2Na(1+) With hydrogenchloride; acetic acid; sodium nitrite In water at 0 - 5℃; Stage #2: 5-amino-4-hydroxy-2-naphthalenesulphonic acid With sodium acetate In water at 0 - 5℃; for 0.5h; pH=0.8 - 1; Further stages;

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: 6Na(1+)*C32H16N8O22S6(6-)

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1.1: sodium nitrite; hydrogenchloride / water / 5 °C 1.2: 3.5 h / 0 - 20 °C / pH 0.8 - 1.1 2.1: sodium hydroxide / 2 h / 20 °C / pH 11 - 12 3.1: sodium nitrite; hydrogenchloride / water / 2 h / 0 °C 3.2: 5 h / 0 - 5 °C / pH 1.5 4.1: sodium nitrite; hydrogenchloride / water / 5 °C 4.2: 1 h / 40 °C / pH 5 - 12 View Scheme

: 35400-55-6
5-amino-4-hydroxy-2-naphthalenesulphonic acid

: C38H20N8O24S7(6-)*6Na(1+)

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1.1: sodium nitrite; hydrogenchloride / water / 5 °C 1.2: 3.5 h / 0 - 20 °C / pH 0.8 - 1.1 2.1: sodium hydroxide / 2 h / 20 °C / pH 11 - 12 3.1: sodium nitrite; hydrogenchloride / water / 2 h / 0 °C 3.2: 5 h / 0 - 5 °C / pH 1.5 4.1: sodium nitrite; hydrogenchloride / water / 5 °C 4.2: 1 h / 0 - 5 °C / pH 8.5 - 9.5 View Scheme

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7664-93-9

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