ChemicalBook > CAS DataBase List > 1-Aminonaphthalene-6-sulfonic acid

1-Aminonaphthalene-6-sulfonic acid

Product Name
1-Aminonaphthalene-6-sulfonic acid
CAS No.
119-79-9
Chemical Name
1-Aminonaphthalene-6-sulfonic acid
Synonyms
5-AMINONAPHTHALENE-2-SULFONIC ACID;1,6-CLEVES ACID;NSC 4984;NSC 31506;kyselinacleve;CLEVE'S ACIDS;Kyselina cleve;1.6 Clevs Acid;Mix Clevs Acid;cleve’sbeta-acid
CBNumber
CB6228406
Molecular Formula
C10H9NO3S
Formula Weight
223.25
MOL File
119-79-9.mol
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1-Aminonaphthalene-6-sulfonic acid Property

Melting point:
>300°C
Density 
1.3588 (rough estimate)
vapor pressure 
0Pa at 25℃
refractive index 
1.6500 (estimate)
storage temp. 
Refrigerator
solubility 
soluble100mg/mL, clear, brown (1N NH4OH)
form 
Solid
pka
pK1: 3.80 (25°C)
color 
Purple
Water Solubility 
1g/L(16 ºC)
Merck 
14,2350
BRN 
1819887
Dissociation constant
0 at 39℃
CAS DataBase Reference
119-79-9(CAS DataBase Reference)
NIST Chemistry Reference
1-Naphthylamine-6-sulfonic acid(119-79-9)
EPA Substance Registry System
2-Naphthalenesulfonic acid, 5-amino- (119-79-9)
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Safety

Risk Statements 
36/37/38
Safety Statements 
26-36/37/39-24/25
RIDADR 
1759
WGK Germany 
1
RTECS 
QK1285000
TSCA 
Yes
HazardClass 
8
PackingGroup 
III
HS Code 
29309090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
285072
Product name
5-Amino-2-naphthalenesulfonic acid
Purity
≥95%
Packaging
5g
Price
$50.7
Updated
2024/03/01
Sigma-Aldrich
Product number
285072
Product name
5-Amino-2-naphthalenesulfonic acid
Purity
≥95%
Packaging
100g
Price
$289
Updated
2024/03/01
TCI Chemical
Product number
A0346
Product name
5-Amino-2-naphthalenesulfonic Acid
Purity
>97.0%(T)
Packaging
25g
Price
$35
Updated
2024/03/01
TCI Chemical
Product number
A0346
Product name
5-Amino-2-naphthalenesulfonic Acid
Purity
>97.0%(T)
Packaging
500g
Price
$164
Updated
2024/03/01
Alfa Aesar
Product number
L03099
Product name
5-Aminonaphthalene-2-sulfonic acid, 97%
Packaging
5g
Price
$24.65
Updated
2024/03/01
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1-Aminonaphthalene-6-sulfonic acid Chemical Properties,Usage,Production

Chemical Properties

Purple Solid. 1-Aminonaphthalene-6-sulfonic acid [119- 79-9]. (5-aminonaphthalene-2-sulfonic acid), 1,6-Cleve’s acid, C10H9NO3S, Mr 223.24, crystallizes from boiling water as plates of the dihydrate. Its sodium, potassium, and calcium salts are all readily soluble in water, but the barium salt is only sparingly soluble. Sulfonation with 10 % oleum yields 1-aminonaphthalene-4,6-disulfonic acid. Caustic fusion gives 5- amino-2-hydroxynaphthalene, and Bucherertype hydrolysis gives 1-hydroxynaphthalene-6- sulfonic acid.

Uses

Fluorescent reagent.

Uses

Intermediate of dyestuff

Uses

5-Amino-2-naphthalenesulfonic acid (1,6-Cleve′s acid) was used in the synthesis of nitrate reductase and detection of nitrate reduction by anaerobic bacteria.

Definition

ChEBI: 5-aminonaphthalene-2-sulfonic acid is an aminonaphthalenesulfonic acid.

Production Methods

Sulfonation of 1-naphthylamine with concentrated sulfuric acid at 130℃ gives mainly 1-aminonaphthalene-6-sulfonic acid. However, the latter is always made, together with the 1,7-isomer, by nitration of naphthalene-2-sulfonic acid to give the mixed 5- and 8- nitronaphthalene-2-sulfonic acids follwed by reduction to ‘‘mixed Cleve’s acids.’’ A b-sulfonation mass is diluted with sulfuric acid, then 67.5 % nitric acid is added slowly at 34℃. After being quenched and neutralized with calcium carbonate, the filtered liquor is reduced by boiling with iron powder, slight acidity being maintained with sulfuric acid. After basification with magnesia the iron residues are filtered off and the filtrate is evaporated until the magnesium salt of the product crystallizes on cooling. Filtration followed by washing with magnesium sulfate gives a 34 % yield of the magnesium salt of 1,6-Cleve’s acid. Purification by dissolution in hot water, acidification, and filtration of the free acid while hot reduce the yield to 25 % based on naphthalene.

General Description

The crystal structure of 5-amino-2-naphthalenesulfonic acid (1,6-Cleve′s acid) depicted the presence of a sulfonate-aminium group zwitterion.

1-Aminonaphthalene-6-sulfonic acid Preparation Products And Raw materials

Raw materials

1-Naphthylamine-7-sulfonic acid Naphthalene Magnesium carbonate Nitric acid Naphthalene-2-sulfonic acid Iron Sulfuric acid

Preparation Products

Peri acid Direct Fast Blue FRL disodium 3-[[4-[[4-amino-6(or 7)-sulphonatonaphthyl]azo]phenyl]azo]-6-[(2,4-diaminophenyl)azo]-4-hydroxynaphthalene-2-sulphonate
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View Lastest Price from 1-Aminonaphthalene-6-sulfonic acid manufacturers

Shaanxi Dideu Medichem Co. Ltd
Product
1-Aminonaphthalene-6-sulfonic acid 119-79-9
Price
US $0.10/KG
Min. Order
1KG
Purity
99.0%
Supply Ability
1000 tons
Release date
2020-01-02
Career Henan Chemical Co
Product
1-Aminonaphthalene-6-sulfonic acid 119-79-9
Price
US $1.00/KG
Min. Order
1KG
Purity
98%
Supply Ability
100KG
Release date
2018-12-24

119-79-9, 1-Aminonaphthalene-6-sulfonic acidRelated Search:

disodium 5-((4-acetylamino-2-sulphophenyl)azo)-6-amino-4-hydroxynaphthalene-2-disulphonate ACID RED 26 ACID RED 1 Acid Red 73 CRYSTAL PONCEAU 6R ACID RED 106 BORDEAUX RED ACID BLUE 29 THORIN Acid Orange 10 Acid Red 27 Ponceau S Direct Red 75 tetrasodium salt Acid Green 1 Direct Blue 71 REACTIVE RED 4 CROCEIN ORANGE G NAPHTHOL YELLOW S

  • 1,6-CLEVES ACID
  • 1,6-CLEVE'S ACID
  • 1-amino-6-naphthalenesulfonic acid
  • 1-Naphthalene -6-sulfonic acid
  • 1-naphthylamine-6-sulfonic
  • 2-Naphthalenesulfonic acid, 5-amino-
  • 2-Naphthalenesulfonicacid,5-amino-
  • 5-amino-2-naphthalenesulfonicaci
  • 5-Naphthylamine-2-sulfonic acid
  • 5-naphthylamine-2-sulfonicacid
  • cleve’sbeta-acid
  • Cleve's beta-acid
  • Kyselina 1-naftylamin-6-sulfonova
  • Kyselina cleve
  • kyselina1-naftylamin-6-sulfonova
  • kyselinacleve
  • ALPHA-NAPHTHYLAMINE-6-SULFONIC ACID
  • 5-AMINONAPHTHALENE-2-SULFONIC ACID
  • 5-AMINO-2-NAPHTHALENESULFONIC ACID
  • 1-NAPHTHYLAMINE-6-SULFONIC ACID
  • 5-ammonio-2-naphthalenesulfonate
  • 1,6?CLEAVE'SACID(1-NAPTHYLAMINE-6-SULFONICACID)
  • 1-Amino-6-sulfonaphthalene
  • CLEVE'S ACID 1,6
  • Aminonaphtalenesulfonicacid,98%
  • (5or8)-aminonaphthalene-2-sulphonic acid
  • 5-AMINO-2-NAPHTHALENESULFONIC ACID, 95+%
  • CLEVE'S ACIDS
  • Cleve acid mixed
  • 1,6-Cleves Acid~1-Naphthylamine-6-sulphonic acid
  • 5-AMINO-2-NAPHTHALENESULPHONICACID
  • 1-NAPHTHYLAMINE-6-SULPHONICACID
  • 5-Amino-naphthalin-2-sulfonsure
  • 5-AMino-2-naphthalenesulfonic Acid, ~90%
  • 6-Sulfo-1-naphthylaMine
  • NSC 31506
  • NSC 4984
  • 1.6 Clevs Acid
  • Mix Clevs Acid
  • 1-Aminonaphthalene-6-sulfonic acid
  • 5-Amino-2-naphthalenesulfonic Acid &gt
  • 5-aminonaphthalene-2-sulfonicaci
  • 1-Aminonaphthalene-6-sulfonic acid ISO 9001：2015 REACH
  • 1-Aminonaphthalene-6-sulfonic acid 119-79-9
  • 5-Aminonaphthalene-2-Sulphonic Acid pure, 98%
  • 119-79-9
  • 119-79-7
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