1-Amino-2-naphthol-4-sulfonic acid

Product Name: 1-Amino-2-naphthol-4-sulfonic acid
CAS No.: 116-63-2
Chemical Name: 1-Amino-2-naphthol-4-sulfonic acid
Synonyms: 1,2,4-acid;TIMTEC-BB SBB008870;1-Amino-2-naphthol-4;LABOTEST-BB LT00454379;3-Hydroxynaphthionic acid;1-amino-4-sulfo-2-naphthol;1-Amino-2-naphthol-4-sulfonic;1-AMINO-2-NAPHTH-4-SULFONIC AC;Amino-2-Naphthol-4-SulfonicAcid;1-Amino-2-naphthol-4-sulfonate.
CBNumber: CB5345948
Molecular Formula: C10H9NO4S
Formula Weight: 239.25
MOL File: 116-63-2.mol

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1-Amino-2-naphthol-4-sulfonic acid Property

Melting point:: 290 °C (dec.)(lit.)
Density: 1.4338 (rough estimate)
refractive index: 1.6500 (estimate)
storage temp.: Store below +30°C.
solubility: DMSO (Slightly), Methanol (Slightly)
pka: -0.49±0.40(Predicted)
form: Powder
color: White to light pink
Water Solubility: insoluble
Merck: 14,454
BRN: 2697469
Stability:: Stable. Incompatible with strong bases, acid chlorides, acid anhydrides, strong oxidizing agents.
InChIKey: RXCMFQDTWCCLBL-UHFFFAOYSA-N
CAS DataBase Reference: 116-63-2(CAS DataBase Reference)
NIST Chemistry Reference: 1-Naphthalenesulfonic acid,4-amino-3-hydroxy-(116-63-2)
EPA Substance Registry System: 1-Naphthalenesulfonic acid, 4-amino-3-hydroxy- (116-63-2)

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Safety

Hazard Codes: Xi
Risk Statements: 36/37/38
Safety Statements: 37/39-26
RIDADR: 3265
WGK Germany: 3
RTECS: QK1292000
TSCA: Yes
HazardClass: IRRITANT
PackingGroup: III
HS Code: 29222100

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

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

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

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

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 398969
Product name: 4-Amino-3-hydroxy-1-naphthalenesulfonic acid
Purity: ACS reagent, ≥90%
Packaging: 25g
Price: $97
Updated: 2024/03/01

Sigma-Aldrich

Product number: 1.00099
Product name: 1-Amino-2-hydroxy-4-naphthalenesulfonic acid
Purity: for determination of phosphate
Packaging: 25g
Price: $136
Updated: 2024/03/01

Sigma-Aldrich

Product number: 1.00099
Product name: 1-Amino-2-hydroxy-4-naphthalenesulfonic acid
Purity: for determination of phosphate
Packaging: 100g
Price: $297
Updated: 2024/03/01

Sigma-Aldrich

Product number: 08751
Product name: 4-Amino-3-hydroxy-1-naphthalenesulfonic acid
Purity: for spectrophotometric det. of Si, ≥95.0%
Packaging: 25g
Price: $52.4
Updated: 2024/03/01

TCI Chemical

Product number: A0367
Product name: 1-Amino-2-naphthol-4-sulfonic Acid
Purity: >97.0%(T)
Packaging: 25g
Price: $35
Updated: 2024/03/01

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1-Amino-2-naphthol-4-sulfonic acid Chemical Properties,Usage,Production

Chemical Properties

1-Amino-2-hydroxynaphthalene-4-sulfonic acid [116-63-2]. (4-amino-3-hydroxynaphthalene-1-sulfonic acid), B€oniger acid, C10H9NO4S, Mr 239.2, is obtained as white or gray needles of the hemihydrate, which is only sparingly soluble in hot water. The alkali-metal salts are soluble in water, but the solutions slowly oxidize in air. Oxidation with nitric acid gives 1,2- naphthoquinone-4-sulfonic acid.

Uses

4-Amino-3-hydroxy-1-naphthalenesulfonic acid is used as mordant dyes and acid dyes intermediate.

Uses

1-Amino-2-naphthol-4-sulfonic acid can be used in determination of phosphate.

Definition

ChEBI: 4-amino-3-hydroxynaphthalene-1-sulfonic acid is a naphthalenesulfonic acid and an aminonaphthalene. It has a role as a mutagen. It is functionally related to a 2-naphthol.

Production Methods

2-Naphthol is dissolved in dilute aqueous sodium hydroxide and precipitated in finely divided form by addition of sulfuric acid at 5℃. Sodium nitrite solution is added to the slightly alkaline suspension, followed by sulfuric acid to effectthe nitrosation while the temperature is held at 5 – 8℃. The suspension of 1-nitroso2-naphthol is neutralized with aqueous sodium hydroxide; a solution of sodium bisulfite is then added. The temperature is allowed to rise to 20℃, and the soluble bisulfite addition complex is formed. Excess sulfuric acid is then added and the temperature is raised to 40℃, whereupon reductive rearrangement takes place and the product slowly crystallizes at 50℃. Filtration and washing give the product as a 25 % paste in 80 % yield. All plant items and reactants must be free from iron to avoid complex formation.

Purification Methods

Purify it by warming 15g of the acid, 150g of NaHSO3 and 5g of Na2SO3(anhydrous) with 1L of water to ca 90o, shaking until most of the solid had dissolved, then filtering hot. The precipitate obtained by adding 10mL of conc HCl to the cooled filtrate is collected, washed with 95% EtOH until the washings are colourless, and is dried under vacuum over CaCl2. It is stored in a dark-coloured bottle, in the cold [Chanley et al. J Am Chem Soc 74 4347 1952]. [Beilstein 14 IV 2825.]

1-Amino-2-naphthol-4-sulfonic acid Preparation Products And Raw materials

Raw materials

Sodium sulfite Sodium bisulfite Sodium nitrite 2-Naphthol Sulfuric acid Sodium metabisulfite

Preparation Products

Acid Black 168 POTASSIUM 1,2-NAPHTHOQUINONE-4-SULFONIC ACID Mordant Black 17 2-DIAZO-1-NAPHTHOL-4-SULFONIC ACID HYDRATE ACID BLUE 161, PURE Mordant Red 7 1-Diazo-2-naphthol-4-sulfonic acid Mordant Black 3 Acid violet 90

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View Lastest Price from 1-Amino-2-naphthol-4-sulfonic acid manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD

Product: 1-Amino-2-naphthol-4-sulfonic acid 116-63-2
Price: US $0.00/KG
Min. Order: 1KG
Purity: 98%min
Supply Ability: 30tons/month
Release date: 2023-02-06

Hebei Weibang Biotechnology Co., Ltd

Product: 1-Amino-2-naphthol-4-sulfonic acid 116-63-2
Price: US $9.90/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 5tons
Release date: 2021-10-12

Hebei Mojin Biotechnology Co., Ltd

Product: 1-Amino-2-naphthol-4-sulfonic acid 116-63-2
Price: US $0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 50000KG/month
Release date: 2023-08-24

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