92-70-6

Basic information

• Product Name: 3-Hydroxy-2-naphthoic acid
• Synonyms: 3-hydroxy-2-naphthoicaci;3-Hydroxy-beta-naphthoic acid;3-hydroxy-beta-naphthoicacid;3-Hydroxynaphthalenecarboxylic acid-(2);3-Naphthol-2-carboxylic acid;3-naphthol-2-carboxylicacid;beta-naphthoicacid,3-hydroxy;BONA
• CAS NO: 92-70-6
• Molecular Formula: C₁₁H₈O₃
• Molecular Weight: 188.18
• EINECS: 202-180-8
• Product Categories: Intermediates of Dyes and Pigments;Intermediates;Naphthalene derivatives;Organics;Building Blocks;C11 to C12;Carbonyl Compounds;Carboxylic Acids;Chemical Synthesis;Organic Building Blocks
• Mol File: 92-70-6.mol
• Article Data: 31

Chemical Properties

• Melting Point: 218-221 °C(lit.)
• Boiling Point: 283.17°C (rough estimate)
• Flash Point: >150°C
• Appearance: Yellow to beige-brown/Fine Crystalline Powder
• Density: 1.43 g/cm3 (23℃)
• Vapor Pressure: 4.68E-06mmHg at 25°C
• Refractive Index: 1.7160 (estimate)
• Storage Temp.: Store below +30°C.
• Solubility: 0.072g/l practically insoluble
• PKA: 3.02±0.30(Predicted)
• Water Solubility: PRACTICALLY INSOLUBLE
• Merck: 14,4835
• BRN: 744100
• CAS DataBase Reference: 3-Hydroxy-2-naphthoic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 3-Hydroxy-2-naphthoic acid(92-70-6)
• EPA Substance Registry System: 3-Hydroxy-2-naphthoic acid(92-70-6)

Safety Data

• Hazard Codes: Xn,Xi
• Statements: 22-36-36/37/38
• Safety Statements: 26-37/39
• WGK Germany: 1
• RTECS: QL1755000
• TSCA: Yes
• Hazardous Substances Data: 92-70-6(Hazardous Substances Data)

Usage

Chemical Properties

yellow to beige-brown fine crystalline powder

Uses

Different sources of media describe the Uses of 92-70-6 differently. You can refer to the following data:
1. 3-Hydroxy-2-naphthoic acid is mainly used as intermediate for the production of dyes and pigments. Further uses are as intermediate for insecticides and pharmaceuticals (ECB, 2000).
2. 2-hydroxy-3-naphthoic acid (BON) is coupled with diazo compounds and their calcium salts are bright red bleed resistance pigments. The somewhat higher cost manganese salt shows better exterior durability than the calcium or barium salts. The BON red pigments are characterized by an extremely high degree of color stability, resistance to acids and alkalies and are nontoxic.

Purification Methods

Crystallise it from water or acetic acid. The S-benzyisothiuronium salt has m 216-217o (from EtOH). It forms many metal complex salts. [Beilstein 10 H 333, 10 III 1084.]

InChI:InChI=1/C11H8O3/c12-10-6-8-4-2-1-3-7(8)5-9(10)11(13)14/h1-6,12H,(H,13,14)/p-1

Upstream product

• 53653-44-4 2H-Naphtho<2,3-e>-1,3-oxazin-2,4(3H)-dion 
• 92024-90-3 benz[d]oxepin-2,4-dicarboxylic acid 
• 875-83-2 sodium 2-naphtholate 
• 56-93-9 benzyltrimethylammonium chloride 
• 109-72-8 n-butyllithium 
• 60-29-7 diethyl ether 
• 135-19-3 β-naphthol 
• 71-43-2 benzene 
• 15719-64-9 methylammonium carbonate 
• 36294-21-0 potassium 2-naphthoxide 
• 67097-82-9 sodium 3-hydroxy-4-sulphonato-2-naphthoic acid 
• 871874-72-5 2-hydroxy-3-phenylcarbamoyl-naphthalene-1-sulfonic acid 
• 127140-75-4 (4'-methoxyphenyl)-2-naphthyliodonium-3-carboxylate 
• 130-85-8 Pamoic acid 

Downstream Products

• 94870-87-8 3-hydroxy-[2]naphthoic acid-(2-morpholino-5-nitro-anilide) 
• 132-68-3 naphthol ASBO 
• 135-62-6 Naphthol AS-OL 
• 706778-25-8 3-hydroxy-[2]naphthoic acid biphenyl-4-ylamide 
• 3651-62-5 3-hydroxy-N-(4-methylphenyl)naphthalene-2-carboxamide 
• 644-16-6 N-(p-tolyl)naphthalen-2-amine 
• 92-78-4 naphthol AS-E 
• 6271-16-5 3-hydroxy-[2]naphthoic acid-(4-dimethylamino-anilide) 
• 2208-20-0 3-hydroxy-N-(4-nitrophenyl)naphthalene-2-carboxamide 
• 70083-12-4 3-hydroxy-N-(2-nitrophenyl)naphthalene-2-carboxamide 
• 28341-70-0 3-(3-hydroxy-[2]naphthoylamino)-benzenesulfonic acid amide 
• 5649-71-8 N-(3-hydroxy-[2]naphthoyl)-sulfanilic acid amide 
• 5464-07-3 3-acetoxy-2-naphthoic acid 
• 92-77-3 2,3-oxynaphthoic acid phenylamide 

Relevant articles and documents

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Synthesis of Polysubstituted 2-Naphthols by Palladium-Catalyzed Intramolecular Arylation/Aromatization Cascade

A palladium-catalyzed intramolecular α-arylation and defluorinative aromatization strategy for the synthesis of polysubstituted 2-naphthols is reported. With ortho-bromobenzyl-substituted α-fluoroketones as the substrates and palladium acetate/triphenylphosphine as the catalyst, this method features good functional group tolerance, readily available catalyst and starting materials, and high yields. The applications of the strategy are demonstrated by the synthesis of useful building blocks, such as naphtha[2,3-b]furan, naphthol AS-D, and ligands/catalysts. (Figure presented.).

A solvent method for producing continuous carbonization 2-naphthol, cogeneration 2,3 acid method and device (by machine translation)

The invention discloses a method for producing continuous carbonization solvent the 2 [...] naphthol, cogeneration 2,3 acid method and device. Method is to adopt continuous carbonization and 2,3 the new process [...] acid, has changed the traditional production process and method, to naphthalene series dye, pigment and derivatives an important intermediate for the production of new production technologies; the device of this invention includes 2 the system and outputs natphthol [...] the 2 [...] hydroxy -3 the output system [...] formic acid, 2 the system includes extracting [...] natphthol chromophore outputs, mixer, and the rectifying tower A, carbonization reaction kettle, 2 the crude distillation tower [...] naphthol, 2 the finished natphthol [...] the rectifying tower and the slice-packaging device, the 2 [...] hydroxy -3 the formic acid [...] output system includes a stationary separation system, and filter-pressing apparatus, dyeworks acidified system, centrifugal-washing and drying-packing device, extraction chromophore mixer connected in sequence, and the rectifying tower A, carbonization reaction kettle, 2 the crude distillation tower [...] naphthol, 2 the product natphthol [...] the rectifying tower and the slice-packing device, 2 the bottom material distillation tower tower[...] naphthol crude product (2,3 the acid [...] double-sodium salt) are connected in sequence still separation system, and filter-pressing apparatus, dyeworks acidified system, centrifuge and dry packing device. (by machine translation)