ChemicalBook > CAS DataBase List > 6-Hydroxynaphthalene-2-sulphonic acid

6-Hydroxynaphthalene-2-sulphonic acid

Product Name
6-Hydroxynaphthalene-2-sulphonic acid
CAS No.
93-01-6
Chemical Name
6-Hydroxynaphthalene-2-sulphonic acid
Synonyms
Baum's acid;Schafferacid;Scheffers acid;SCHAEFFER ACID;SCHAFFER'S SALT;Schaffer`s acid;SCHAEFFER'S ACID;SCHAEFFER'S SALT;kyselinaschaferova;Kyselina schaferova
CBNumber
CB7301210
Molecular Formula
C10H8O4S
Formula Weight
224.23
MOL File
93-01-6.mol
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6-Hydroxynaphthalene-2-sulphonic acid Property

Melting point:
>300 °C(lit.)
Boiling point:
335.63°C (rough estimate)
Density 
1.4643 (rough estimate)
refractive index 
1.5400 (estimate)
pka
0.41±0.40(Predicted)
CAS DataBase Reference
93-01-6(CAS DataBase Reference)
NIST Chemistry Reference
2-Naphthalenesulfonic acid, 6-hydroxy-(93-01-6)
EPA Substance Registry System
2-Naphthalenesulfonic acid, 6-hydroxy- (93-01-6)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
WGK Germany 
3
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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.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

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N-Bromosuccinimide Price

Matrix Scientific
Product number
100442
Product name
6-Hydroxynaphthalene-2-sulfonic acid
Purity
95+%
Packaging
250mg
Price
$435
Updated
2021/12/16
AK Scientific
Product number
T979
Product name
6-Hydroxynaphthalene-2-sulphonicacid
Packaging
250mg
Price
$637
Updated
2021/12/16
Matrix Scientific
Product number
100442
Product name
6-Hydroxynaphthalene-2-sulfonic acid
Purity
95+%
Packaging
1g
Price
$975
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
CHM0021585
Product name
6-HYDROXYNAPHTHALENE-2-SULPHONIC ACID
Purity
95.00%
Packaging
1G
Price
$1076.92
Updated
2021/12/16
Alichem
Product number
93016
Product name
6-Hydroxynaphthalene-2-sulfonicacid
Packaging
1g
Price
$998
Updated
2021/12/16
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6-Hydroxynaphthalene-2-sulphonic acid Chemical Properties,Usage,Production

Chemical Properties

2-Hydroxynaphthalene- 6 -sulfonic acid [93-01-6]. (6-hydroxynaphthalene-2-sulfonic acid), Schaeffer acid, C10H8O4S, Mr 224.23, is readily soluble in water, from which it can be recrystallized as the monohydrate (mp 129℃). The sodium salt is sparingly soluble in cold water (1.7 %) but forms a 30 % solution at 80℃. Coupling with diazo compounds results in substitution in the 1-position as does treatment with bromine, nitrous acid, or oleum. Fusion with potassium hydroxide gives 2,6-dihydroxynaphthalene, amination gives 2- aminonaphthalene-6-sulfonic acid, and sulfonation (20 % oleum, 25℃) results in 2-hydroxynaphthalene-1,6-disulfonic acid.

Uses

2-Hydroxynaphthalene-6-sulfonic acid is used as a coupling component for a wide range of azo dyes, e.g., C.I. Acid Orange 12, C.I. Food Yellow 3, and C.I. Food Orange 2. It is also used as an intermediate for more highly substituted dye components and synthetic tanning agents. The 1-nitroso derivative forms an iron complex (C.I. Acid Green 1) which was formerly used as a wool dye.

Preparation

2-Naphthol is added to a mixture of sulfuric acid and sodium sulfate, and the reaction is continued at 90 C for 12 h. After pouring the reaction mixture into water, the sodium salt of the product is precipitated by addition of salt and filtered at 60℃ to separate the isomers.

6-Hydroxynaphthalene-2-sulphonic acid Preparation Products And Raw materials

Raw materials

Preparation Products

7-hydroxynaphthalene-1-sulphonic acid Acid Black 26 Sunset Yellow FCF
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6-Hydroxynaphthalene-2-sulphonic acid Suppliers

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View Lastest Price from 6-Hydroxynaphthalene-2-sulphonic acid manufacturers

Shaanxi Dideu Medichem Co. Ltd
Product
6-Hydroxynaphthalene-2-sulphonic acid 93-01-6
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
99.0%
Supply Ability
1000KG
Release date
2024-08-08
Career Henan Chemical Co
Product
6-Hydroxynaphthalene-2-sulphonic acid 93-01-6
Price
US $1.00/g
Min. Order
1g
Purity
99%
Supply Ability
200kg
Release date
2019-12-30

93-01-6, 6-Hydroxynaphthalene-2-sulphonic acidRelated Search:

Phenmedipham 1,5-Naphthalenedisulfonic acid 2-Aminonaphthalene-1-sulfonic acid 1,1'-Bi-2-naphthol Terbinafine Hydrochloride 2-Naphthol CHLOROPHOSPHONAZO III 1-Naphthol PHENOLDISULFONIC ACID 4-Amino-5-methoxy-2-methylbenzensulfonic acid 6,6'-Oxybis- Acid Green 1 Sodium 2,3-dihydroxynaphthalene-6-sulfonate Ponceau S Acid Red 73 Acid Red 27 ACID RED 26 1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT

  • 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
  • beta-Naphtholsulfonic acid S
  • beta-naphtholsulfonicacids
  • SCHAFFER'S SALT
  • SODIUM 6-HYDROXY-2-NAPHTHALENESULFONATE
  • 2-naphthol-6-sulphonic acid
  • 6-Hydroxy-6-Sulfonic Acid
  • Scheffers acid
  • 6-hydroxy-2-naphthalenesulfonic acid
  • 6-HYDROXY-2-NAPHTHALENESULFONIC ACID SODIUM SALT
  • 6-Hydroxynaphthalene-2-sulphonic acid
  • 2-naphthol-6-sulfonic acid
  • 2-NAPHTHOL-6-SULFONIC ACID SODIUM
  • 2-NAPHTHOL-6-SULFONIC ACID SODIUM SALT
  • 2-NAPHTHOL-6-SULFONIC ACID SODIUM SALT DIHYDRATE
  • 2-NAPTHOL-6-SULFONIC ACID
  • Schaffer`s acid
  • 6-Hydroxy-2-Naphthalenesulphonic Acid
  • 6-hydroxynaphthalene-2-sulfonic acid
  • 2-Naphthol-6-potassiumsulfonate
  • 2-Naphthalenesulfonic acid, 6-hydroxy-
  • 1-naphthol-2-sulfonic acid
  • 6-Hydroxy-2-naphthalenesulfonic acid sodium salt hydrate technical grade
  • Kyselina 2-naftol-6-sulfonova
  • Kyselina schaferova
  • kyselina2-naftol-6-sulfonova
  • kyselinaschaferova
  • schaeffer’sbeta-acid
  • schaeffer’sbeta-naphtholsulfonicacid
  • Schaeffer's beta-acid
  • Schaeffer's beta-naphtholsulfonic acid
  • Schafferacid
  • SODIUM 2-NAPHTHOL-6-SULFONATE
  • SCHAEFFER'S ACID
  • SCHAEFFER'S SALT
  • SCHAEFFER ACID
  • Ponceau 4R Impurity 4 Monomer
  • Olaquindox Impurity 6
  • 93-01-6
  • Organic Building Blocks
  • Sulfonic/Sulfinic Acids
  • Sulfur Compounds
  • Building Blocks
  • Organic acids
  • Intermediates of Dyes and Pigments