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ChemicalBook >> CAS DataBase List >>1-Amino-2-naphthol-4-sulfonic acid

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
Molecular Weight:
239.25
MDL Number:
MFCD00004019
MOL File:
116-63-2.mol
MSDS File:
SDS
Last updated:2025-04-29 17:45:46

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

Melting point 290 °C (dec.)(lit.)
bulk density 280kg/m3
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)
FDA UNII W46SK3P33G
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)
UNSPSC Code 41116105
NACRES NB.21

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P261-P280a-P304+P340-P305+P351+P338-P405-P501a
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
NFPA 704
1
2 1

1-Amino-2-naphthol-4-sulfonic acid price More Price(50)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 398969 4-Amino-3-hydroxy-1-naphthalenesulfonic acid ACS reagent, ≥90% 116-63-2 25g $97 2024-03-01 Buy
Sigma-Aldrich 1.00099 1-Amino-2-hydroxy-4-naphthalenesulfonic acid for determination of phosphate 116-63-2 25g $136 2024-03-01 Buy
Sigma-Aldrich 1.00099 1-Amino-2-hydroxy-4-naphthalenesulfonic acid for determination of phosphate 116-63-2 100g $297 2024-03-01 Buy
Sigma-Aldrich 08751 4-Amino-3-hydroxy-1-naphthalenesulfonic acid for spectrophotometric det. of Si, ≥95.0% 116-63-2 25g $52.4 2024-03-01 Buy
TCI Chemical A0367 1-Amino-2-naphthol-4-sulfonic Acid >97.0%(T) 116-63-2 25g $35 2024-03-01 Buy
Product number Packaging Price Buy
398969 25g $97 Buy
1.00099 25g $136 Buy
1.00099 100g $297 Buy
08751 25g $52.4 Buy
A0367 25g $35 Buy

1-Amino-2-naphthol-4-sulfonic acid Chemical Properties,Uses,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.]

131-91-9
116-63-2
Synthesis of 1-Amino-2-naphthol-4-sulfonic acid from 1-Nitroso-2-naphthol
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View Lastest Price from 1-Amino-2-naphthol-4-sulfonic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
1-Amino-2-naphthol-4-sulfonic acid pictures 2025-06-12 1-Amino-2-naphthol-4-sulfonic acid
116-63-2
 US $0.00 / KG 1KG 98%min 30tons/month WUHAN FORTUNA CHEMICAL CO., LTD
1-Amino-2-naphthol-4-sulfonic acid pictures 2025-06-12 1-Amino-2-naphthol-4-sulfonic acid
116-63-2
 0.99 RongNa Biotechnology Co.,Ltd
1-Amino-2-naphthol-4-sulfonic acid pictures 2025-06-12 1-Amino-2-naphthol-4-sulfonic acid
116-63-2
 US $0.00-0.00 / kg 1kg 98 1000 Wuhan Circle Star Chem-medical Technology Co.,Ltd
4-Amino-3-hydroxy-1-naphthalenesulfonic acid, ACS, 98+% 1-AMINO-2-NAPHTHOL-4-SULPHONIC ACID extrapure AR 3-Hydroxynaphthionic acid 4-Amino-3-hydroxy-1-naphthalenesulfonic acid,95% 4-amino-3-hydroxy-1-Naphthalenesulfonic acid 1-amino-2-naphthol-4-sulfonic acid 4-Amino-3-hydroxynaphthalene-1-sulfonic acid 4-Amino-3-hydroxy-1-naphthalenesulfonic acid,1-Amino-2-naphthol-4-sulfonic acid 4-Amino-3-hydroxy-1-naphthalenesulfonic acid p.a. 1-Amino-2-naphthol-4 2-Naphthol-4-sulfonic acid, 1-aMino- 4-Amino-3-hydroxy-1-naphthalenesulfonic acid, ACS, 98.0% min. 1-Amino-2-naphthol-4-sulfonic acidACS reagent, ≥ 98.0% (Titration) 1-Amino-2-hydroxy-4-naphthalenesulfonic acid for determination of phosphate 1-Amino-2-Napthol-4-sulfonic Acid 4-Amino-3-hydroxy-1-naphthalenesulfonic acid, 98+% 1,2,4-acid TIMTEC-BB SBB008870 4-AMINO-3-HYDROXYNAPHTHALENE-1-SULPHONIC ACID 2-HYDROXY-4-SULFO-1-NAPHTHYLAMINE 1-AMINO-2-NAPHTHOL-4-SULPHONIC ACID 1-AMINO-2-NAPHTHOL-4-SULFONIC ACID 1-AMINO-2-HYDROXY-4-NAPHTHALENESULFONIC ACID 1-AMINO-2-HYDROXY-4-SULFONAPHTHALENE 1,2,4-AMINONAPHTHOLSULFONIC ACID 4-Amino-3-hydroxy-1-naphthalenesulphonic acid 1-Amino-2-naphthol-4-sulfonic acid hemihydrate 4-AMINO-3-HYDROXY-1-NAPHTHALENESULFONIC& 4-AMINO-3-HYDROXY-1-NAPHTHALENE-SULFONIC ACID ACS 4-AMINO-3-HYDROXY-1-NAPHTHALENESULFONIC ACID, 98+%, A.C.S. REAGENT 1-Amino-2-Naphthol-4-SulfonicAcidGr 1-Amino-2-Naphthol-4-SulfonicAcidGr-(4-Amino-3Hydroxy-1-NapthaleneSulphonicAcidGr) Amino-2-Naphthol-4-SulfonicAcid 1-AMINO-2-NAPHTHOL-4-SULFONIC ACID, REAG. 4-Amino-3-hydroxy-1-naphthalenesulfonic acid, reagent ACS 1-AMINO-2-NAPHTHOL-4-SULFONIC ACID REAGENT (ACS) 1-Amino-2-naphthol-4-sulfonate. 4-AMINO-3-HYDROXY-1-NAPHTHALENESULFONIC ACID PURUM GR, FOR SPECTROPHOTOMETRIC DET. (OF SI) 95% 4-AMINO-3-HYDROXY-1-NAPHTHALENESULFONIC ACID, 99+% LABOTEST-BB LT00454379 1-Amino-2-naphthol-4-sulfonic 1-amino-4-sulfo-2-naphthol 1-Naphthalenesulfonicacid,4-amino-3-hydroxy- 4-amino-3-hydroxy-1-naphthalenesulfonicaci 4-AMINO-3-HYDROXY-1-NAPHTHALENESULFONIC ACID AR 4-AMINO-3-NAPHTHOL-1-SULFONIC ACID 4-AMINO-3-HYDROXY-1-NAPHTHALENESULFONIC ACID 4-AMINO-3-HYDROXY-1-NAPTHALENE SULFONIC ACID 4-AMINO-3-HYDROXYNAPHTHALENE-1-SULFONIC ACID 1-AMINO-2-NAPHTH-4-SULFONIC AC 1-amino-2-naphthol-4-sulfonic acid test solution(ChP) 1-AMINO-2-NAPHTHOL-4-SULFONIC ACID, REAGENT (ACS)1-AMINO-2-NAPHTHOL-4-SULFONIC ACID, REAGENT (ACS)1-AMINO-2-NAPHTHOL-4-SULFONIC ACID, REAGENT (ACS) 1-Amino-2-naphthol-4-sulfonic Acid > 4-amino-3-hydroxynaphthalene-1-sulfonicaci 1-Amino-2-naphthol-4-sulfonic acid test solution 1-Amino-2-naphthol-4-sulphonic acid, GR 98%+ TIANFUCHEM--High purity 116-63-2 1-Amino-2-naphthol-4-sulfonic acid 1-Amino-2-Naphthol-4-Sulphonic Acid (1,2,4-Acid) extrapure AR, ACS, 98% 1-AMINO-2-NAPHTHOL-4-SULPHONIC ACID AR 1-AMINO-2-NAPHTHOL-4-SULPHONIC ACID Extra Pure