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  • China Largest factory Manufacturer Supply Highest Quality 1-Naphthylamine-7-sulfonic acid CAS 119-28-8

    Cas No: 119-28-8

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  • 119-28-8 Structure
  • Basic information

    1. Product Name: 1-Naphthylamine-7-sulfonic acid
    2. Synonyms: TIMTEC-BB SBB000621;SODIUM NAPTHIONATE;SODIUM NAPHTHIONATE;SODIUM 1-NAPHTHYLAMINE-4-SULFONATE;PARA-NAPHTHIONIC ACID, NA SALT;NAPHTHIONIC ACID SODIUM SALT 0.5-WATER;NAPHTHIONIC ACID SODIUM SALT;NAPHTHYLAMINE-4-SULFONIC ACID SODIUM SALT
    3. CAS NO:119-28-8
    4. Molecular Formula: C10H9NO3S
    5. Molecular Weight: 223.25
    6. EINECS: 204-311-4
    7. Product Categories: Intermediates of Dyes and Pigments;Intermediates
    8. Mol File: 119-28-8.mol
    9. Article Data: 6
  • Chemical Properties

    1. Melting Point: ≥300 °C(lit.)
    2. Boiling Point: 220°C (rough estimate)
    3. Flash Point: N/A
    4. Appearance: /
    5. Density: 1.3588 (rough estimate)
    6. Refractive Index: 1.6500 (estimate)
    7. Storage Temp.: Sealed in dry,Room Temperature
    8. Solubility: N/A
    9. PKA: pK1: 3.66 (25°C)
    10. Merck: 14,2351
    11. BRN: 2115629
    12. CAS DataBase Reference: 1-Naphthylamine-7-sulfonic acid(CAS DataBase Reference)
    13. NIST Chemistry Reference: 1-Naphthylamine-7-sulfonic acid(119-28-8)
    14. EPA Substance Registry System: 1-Naphthylamine-7-sulfonic acid(119-28-8)
  • Safety Data

    1. Hazard Codes: C
    2. Statements: 34
    3. Safety Statements: 26-36/37/39-45
    4. RIDADR: UN 2585 8/PG 3
    5. WGK Germany: 2
    6. RTECS:
    7. TSCA: Yes
    8. HazardClass: 8
    9. PackingGroup: III
    10. Hazardous Substances Data: 119-28-8(Hazardous Substances Data)

119-28-8 Usage

Synthesis

1-Naphthylamine-7-sulfonic acid can be obtained by sulfonation, nitration, neutralization, reduction and acid precipitation of naphthalene.

Chemical Properties

Brown crystalline

Uses

Different sources of media describe the Uses of 119-28-8 differently. You can refer to the following data:
1. Intermediate of dyestuff
2. 8-Amino-2-naphthalenesulfonic acid can be used as a reactant to synthesize: Fe3O4/sulfonated polyaniline composite material via chemical oxidative polymerization with aniline in the presence of magnetite (Fe3O4) nanoparticles. Prismatic crystals of strychnine-8-ammonio-2-naphthalenesulfonate-water by heating with strychnine in water/ethanol solvent mixture.5-amino-9-dialkylamino benzo[a]phenoxazine dyes (Nile blue analogs) by condensation with N-alkyl or N-sulfo-propyl 4-arylazo-substituted 3-hydroxyaniline.

Application

1-Naphthylamine-7-sulfonic acid can be used as a dye intermediate to prepare dyes such as direct light fast blue B2RL, direct light fast red brown RTL, and sulfur blue CV.

Check Digit Verification of cas no

The CAS Registry Mumber 119-28-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,1 and 9 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 119-28:
(5*1)+(4*1)+(3*9)+(2*2)+(1*8)=48
48 % 10 = 8
So 119-28-8 is a valid CAS Registry Number.
InChI:InChI=1/C10H9NO3S/c11-10-3-1-2-7-4-5-8(6-9(7)10)15(12,13)14/h1-6H,11H2,(H,12,13,14)

119-28-8 Well-known Company Product Price

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  • (Code)Product description
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  • Aldrich

  • (A7782)  8-Amino-2-naphthalenesulfonicacid  ≥97%

  • 119-28-8

  • A7782-25G

  • 1,316.25CNY

  • Detail
  • Aldrich

  • (A7782)  8-Amino-2-naphthalenesulfonicacid  ≥97%

  • 119-28-8

  • A7782-100G

  • 3,689.01CNY

  • Detail

119-28-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017

1.Identification

1.1 GHS Product identifier

Product name 1-Naphthylamine-7-sulfonic acid

1.2 Other means of identification

Product number -
Other names 1,7-Cleve's Acid

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:119-28-8 SDS

119-28-8Synthetic route

naphthalene-2-sulfonate
120-18-3

naphthalene-2-sulfonate

A

5-aminonaphthalene-2-sulfonic acid
119-79-9

5-aminonaphthalene-2-sulfonic acid

B

8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

Conditions
ConditionsYield
With sulfuric acid; nitric acid at 25℃; anschl. bei 10grad, Reduzieren des erhaltenen Gemisches mit Eisen und sehr verd. Salzsaeure;
With sulfuric acid; nitric acid at 25℃; dann bei 10grad, Reduzieren des erhaltenen Gemisches mit Eisen und sehr verd. Salzsaeure;
Stage #1: naphthalene-2-sulfonate With sulfuric acid at 120℃; for 0.666667h;
Stage #2: With nitric acid at 33 - 35℃; for 20h; Reagent/catalyst; Overall yield = 86 percent; Overall yield = 75 g; Further stages;
1-nitro-7-naphthalenesulfonic acid
18425-74-6

1-nitro-7-naphthalenesulfonic acid

8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

Conditions
ConditionsYield
With ammonium sulfide
With iron; acetic acid
8-hydroxy-naphthalene-2-sulfonic acid
20191-62-2

8-hydroxy-naphthalene-2-sulfonic acid

sodium disulfite

sodium disulfite

8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

Conditions
ConditionsYield
Reaktion des Natriumsalzes; Erhitzen des Reaktionsprodukts mit Ammoniak unter Druck auf 100-110grad, dann beim Ansaeuern;
sulfuric acid
7664-93-9

sulfuric acid

1-amino-naphthalene-2,7-disulfonic acid
486-54-4

1-amino-naphthalene-2,7-disulfonic acid

8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

1-amino-naphthalene-2,7-disulfonic acid
486-54-4

1-amino-naphthalene-2,7-disulfonic acid

water
7732-18-5

water

8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

Conditions
ConditionsYield
unter Druck;
1-nitro-7-naphthalenesulfonic acid
18425-74-6

1-nitro-7-naphthalenesulfonic acid

ammonium sulfide

ammonium sulfide

8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

8-hydroxy-naphthalene-2-sulfonic acid
20191-62-2

8-hydroxy-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
Stage #1: 8-amino-2-naphthalenesulfonic acid With water; sodium hydrogensulfite for 15h; Reflux; Inert atmosphere;
Stage #2: With sodium hydroxide In water for 4h; Reflux;
Stage #3: With hydrogenchloride In water
95%
With sodium disulfite man kocht und macht alkalisch;
With sodium hydroxide at 260℃;
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

3,4-dichlorobenzoyl chloride
3024-72-4

3,4-dichlorobenzoyl chloride

8-(3,4-dichlorobenzamido)naphthalene-2-sulfonic acid
1415094-32-4

8-(3,4-dichlorobenzamido)naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With pyridine at 20℃; for 12h; Inert atmosphere;91%
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

4-nitro-aniline
100-01-6

4-nitro-aniline

8-amino-5-(4-nitro-phenylazo)-2-naphthalenesulfonic acid

8-amino-5-(4-nitro-phenylazo)-2-naphthalenesulfonic acid

Conditions
ConditionsYield
Stage #1: 4-nitro-aniline With hydrogenchloride; sodium nitrite In water at 0℃; for 0.333333h;
Stage #2: 8-amino-2-naphthalenesulfonic acid In methanol; water at 20℃; for 0.5h;
90%
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

8-amino-5,8'-azo-bis-naphthalene-2-sulphonic acid

8-amino-5,8'-azo-bis-naphthalene-2-sulphonic acid

Conditions
ConditionsYield
With hydrogenchloride; sodium nitrite at 55℃; for 0.5h; pH=2;87%
With ethanol; nitrate radical
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

8-chloro-naphthalene-2-sulfonic acid
42849-62-7

8-chloro-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
Stage #1: 8-amino-2-naphthalenesulfonic acid With hydrogenchloride; sodium nitrite In water at 0 - 5℃; for 1h; Inert atmosphere;
Stage #2: With hydrogenchloride; copper(l) chloride In water at 0 - 20℃; for 13h; Inert atmosphere;
65%
durch Austausch von NH2 gegen Chlor;
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

phenylhydrazine
100-63-0

phenylhydrazine

sodium 1-phenylazonaphthalene-7-sulfonate

sodium 1-phenylazonaphthalene-7-sulfonate

Conditions
ConditionsYield
With sodium hydrogencarbonate at 140 - 150℃; for 24h;43%
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

poly(5-aminonaphthalene-2-sulphonic acid)

poly(5-aminonaphthalene-2-sulphonic acid)

Conditions
ConditionsYield
With sodium hydroxide; sodium persulfate In water at 20℃; for 16h; oxidative polymerization;31%
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

benzene-1,3-dicarbonyl dichloride
99-63-8

benzene-1,3-dicarbonyl dichloride

disodium 8,8'-[1,3-phenylenebis(carbonylimino)]bis(2-naphthalenesulfonate)

disodium 8,8'-[1,3-phenylenebis(carbonylimino)]bis(2-naphthalenesulfonate)

Conditions
ConditionsYield
With sodium carbonate In chloroform; water at 25℃; for 18h;28%
benzenediazonium
2684-02-8

benzenediazonium

8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

8-amino-5-phenylazo-naphthalene-2-sulfonic acid
68121-31-3

8-amino-5-phenylazo-naphthalene-2-sulfonic acid

8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

benzene diazonium chloride
100-34-5

benzene diazonium chloride

5,8-diamino-naphthalene-2-sulfonic acid
6357-90-0

5,8-diamino-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With sodium acetate Reduzieren mit Zinn(II)-chlorid und Salzsaeure;
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

3-carboxylato-4-hydroxybenzenediazonium
68596-89-4

3-carboxylato-4-hydroxybenzenediazonium

2-hydroxy-5-[4-(2-hydroxy-3-phenylcarbamoyl-[1]naphthylazo)-6-sulfo-[1]naphthylazo]-benzoic acid

2-hydroxy-5-[4-(2-hydroxy-3-phenylcarbamoyl-[1]naphthylazo)-6-sulfo-[1]naphthylazo]-benzoic acid

Conditions
ConditionsYield
diazotiert wieder und kuppelt mit 3-Oxy-naphthoesaeure-(2)-anilid in sodaalkalischer Loesung;
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

furan-2,3,5(4H)-trione pyridine (1:1)

furan-2,3,5(4H)-trione pyridine (1:1)

A

1,7-Dihydroxynaphthalene
575-38-2

1,7-Dihydroxynaphthalene

B

8-amino-2-naphthol
118-46-7

8-amino-2-naphthol

C

8-hydroxy-naphthalene-2-sulfonic acid
20191-62-2

8-hydroxy-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
at 260℃; unter Druck;
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

benzo[h]quinolin-9-ol
57442-06-5

benzo[h]quinolin-9-ol

Conditions
ConditionsYield
ueber Benzo<h>chinolin-9-sulfonsaeure;
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

8-amino-2-naphthol
118-46-7

8-amino-2-naphthol

Conditions
ConditionsYield
With sodium hydroxide; water at 250 - 260℃;
With sodium hydroxide; water
With sodium hydroxide at 280 - 320℃; for 10h; Autoclave;
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

8-hydroxy-5,7-dinitro-2-naphthalenesulfonic acid
483-84-1

8-hydroxy-5,7-dinitro-2-naphthalenesulfonic acid

Conditions
ConditionsYield
With hydrogenchloride; sodium nitrite Diazotization.und Behandeln des Reaktionsprodukts mit Salpetersaeure;
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

1-aminonaphthalene-2,4,7-trisulphonic acid
61986-93-4

1-aminonaphthalene-2,4,7-trisulphonic acid

Conditions
ConditionsYield
With sulfuric acid
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

7-sulfo-[1]naphthoic acid
861511-44-6

7-sulfo-[1]naphthoic acid

8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

8-amino-5,7-dibromo-naphthalene-2-sulfonic acid

8-amino-5,7-dibromo-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With hydrogenchloride; bromine
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

8-amino-5-nitro-naphthalene-2-sulfonic acid
6357-78-4

8-amino-5-nitro-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With sulfuric acid; nitric acid
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

8-ethanesulfonyl-naphthalene-2-sulfonic acid amide
105905-81-5

8-ethanesulfonyl-naphthalene-2-sulfonic acid amide

Conditions
ConditionsYield
ueber 8-Aethylmercapto-naphthalin-2-sulfonsaeure-amid;
Multi-step reaction with 4 steps
1.1: potassium hydroxide; sulfuric acid; potassium nitrite / water / 0.75 h / 0 - 20 °C / Inert atmosphere
1.2: 3.08 h / 20 °C / Heating; Inert atmosphere
2.1: trichlorophosphate / 2 h / Reflux; Inert atmosphere
2.2: 20 °C / Cooling with ice; Inert atmosphere
3.1: (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride / N,N-dimethyl-formamide / 24 h / 50 - 125 °C / Inert atmosphere
4.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 20 °C / Inert atmosphere
View Scheme
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

8-amino-5-nitroso-naphthalene-2-sulfonic acid

8-amino-5-nitroso-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With sulfuric acid; sodium nitrite
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

7-sulfo-naphthalene-1-diazonium-betaine

7-sulfo-naphthalene-1-diazonium-betaine

Conditions
ConditionsYield
With ethanol; nitrate radical
With sulfuric acid; sodium nitrite at 0℃; Kinetik der Bildung;
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

acetic anhydride
108-24-7

acetic anhydride

8-acetylamino-naphthalene-2-sulfonic acid
118-37-6

8-acetylamino-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With pyridine
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

p-toluidine
106-49-0

p-toluidine

8-p-toluidino-naphthalene-2-sulfonic acid
899-76-3

8-p-toluidino-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With p-toluidine hydrochloride at 160 - 170℃;
2-diazo-1-(4-nitrophenyl)ethanone
4203-31-0

2-diazo-1-(4-nitrophenyl)ethanone

8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

benzoyl chloride
98-88-4

benzoyl chloride

8-benzoylamino-naphthalene-2-sulfonic acid-(4-nitro-phenacyl ester)
102884-85-5

8-benzoylamino-naphthalene-2-sulfonic acid-(4-nitro-phenacyl ester)

Conditions
ConditionsYield
With copper dichloride
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

acetic acid
64-19-7

acetic acid

8-acetylamino-naphthalene-2-sulfonic acid
118-37-6

8-acetylamino-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With sodium acetate
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

aniline hydrochloride
142-04-1

aniline hydrochloride

aniline
62-53-3

aniline

8-anilino-1-naphthalenesulfonic acid
607-13-6

8-anilino-1-naphthalenesulfonic acid

Conditions
ConditionsYield
at 160 - 170℃;
8-amino-2-naphthalenesulfonic acid
119-28-8

8-amino-2-naphthalenesulfonic acid

aniline
62-53-3

aniline

8-anilino-1-naphthalenesulfonic acid
607-13-6

8-anilino-1-naphthalenesulfonic acid

Conditions
ConditionsYield
With aniline hydrochloride at 160 - 170℃;

119-28-8Relevant articles and documents

Preparation method of clean product 1, 6 and 1,7 mixed

-

Paragraph 0037; 0041-0042, (2020/06/16)

The invention relates to a preparation method of a cleaning type product 1,6- and 1,7-Cleve's acid. The method comprises the following steps: performing sulfonation on refined naphthalene to obtain 2-naphthalene sulfonic acid, performing nitration for the formation of a mixture of 1-nitro-6-naphthalenesulfonic acid and 1-nitro-7-naphthalenesulfonic acid, performing neutralization through ammonia water, and finally performing hydrazine hydrate reduction to obtain the 1,6- and 1,7-Cleve's acid. Compared with original production process, the method provided by the invention has no generation of waste residue in the whole process, the purpose of emission reduction is achieved, and the process is more simple and convenient, and has safety and effectiveness. In addition, the overall cost of theprocess provided by the invention is lower than the overall cost of an original process.

Polyazo dye compounds having plural vinylsulfone type fiber reactive groups in one molecule

-

, (2008/06/13)

A polyazo compound of the following formula, wherein A is phenylene, naphthylene or alkylene, X is -NR2R3, -OR4 or -SR5 in which R2, R3, R4 and R5 are each hydrogen, alkyl, phenyl, naphthylene or benzyl, Z is -SO2CH=CH2 or -SO2CH2CH2Z? in which Z? is a splittable group, R1 is hydrogen or alkyl, and F is polyazo dye moiety carrying a fiber reactive group like that represented by Z, which compound is useful for dyeing or printing fiber materials to obtain a product dyed or printed in a color superior in various fastness properties with superior build-up property.

Fiber-reactive disazo brown dye having vinylsulfone-type reactive group

-

, (2008/06/13)

A compound, or a salt thereof, represented by the following formula, STR1 wherein A is a substituted or unsubstituted phenylene or naphthylene group, B is STR2 in which R3 is a hydrogen atom or a lower alkyl, lower alkoxy, acylamino or ureido group, and R4 is a hydrogen atom or a lower alkyl or lower alkoxy group, R1 and R3 are independently a hydrogen atom or a substituted or unsubstituted lower alkyl group, X is a substituted or unsubstituted amino, lower alkoxy, substituted phenoxy or sulfo group, Y is --SO2 CH=CH2 or --SO2 CH2 CH2 Z, in which Z is a group capable of being split by the action of an alkali, and m is 2 or 3, which is useful for dyeing hydroxyl group- or amide group-containing fiber materials to give dyed products of a brown color having excellent fastness properties with good build-up property.

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