ChemicalBook > CAS DataBase List > 2,3-Dihydroxynaphthalene

2,3-Dihydroxynaphthalene

Product Name
2,3-Dihydroxynaphthalene
CAS No.
92-44-4
Chemical Name
2,3-Dihydroxynaphthalene
Synonyms
Naphthalene-2,3-diol;2,3-Dihydroxy;2,3-DIHYDROXYNAPHTHALENE, SUBL.;2,3-NAPHTHALENEDIOL;Naphthalin-2,3-diol;Dihydroxynaphthalene;Naphthalenediol-(2,3);3-Dihydroxynaphthalene;2,3-Dihydroxynapthalene;2,3-DIHYDROXYNAPHTHALENE
CBNumber
CB8736136
Molecular Formula
C10H8O2
Formula Weight
160.17
MOL File
92-44-4.mol
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2,3-Dihydroxynaphthalene Property

Melting point:
161-165 °C (lit.) 162-164 °C
Boiling point:
246.06°C (rough estimate)
Density 
1.0924 (rough estimate)
vapor pressure 
0.8 hPa (149 °C)
refractive index 
1.5178 (estimate)
Flash point:
175 °C
storage temp. 
Store below +30°C.
solubility 
4g/l
form 
Powder
pka
9.10±0.40(Predicted)
color 
White to pinkish to beige-grayish
PH
6 (1g/l, H2O, 20℃)
Water Solubility 
slightly soluble
BRN 
742375
CAS DataBase Reference
92-44-4(CAS DataBase Reference)
NIST Chemistry Reference
2,3-Naphthalenediol(92-44-4)
EPA Substance Registry System
2,3-Naphthalenediol (92-44-4)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-37/39
WGK Germany 
3
RTECS 
QJ4750000
F 
10-23
Autoignition Temperature
>330 °C
TSCA 
Yes
HS Code 
29072900
Toxicity
LD50 orally in Rabbit: 970 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H302Harmful if swallowed

H318Causes serious eye damage

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

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

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

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

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.14578
Product name
2,3-Naphthalenediol
Purity
for synthesis
Packaging
50g
Price
$101
Updated
2024/03/01
Sigma-Aldrich
Product number
37760
Product name
2,3-Dihydroxynaphthalene
Purity
≥98.0% (HPLC)
Packaging
50g
Price
$147
Updated
2024/03/01
Sigma-Aldrich
Product number
37760
Product name
2,3-Dihydroxynaphthalene
Purity
≥98.0% (HPLC)
Packaging
250g
Price
$228
Updated
2024/03/01
TCI Chemical
Product number
D0593
Product name
2,3-Dihydroxynaphthalene
Purity
>98.0%(GC)(T)
Packaging
25g
Price
$40
Updated
2024/03/01
TCI Chemical
Product number
D0593
Product name
2,3-Dihydroxynaphthalene
Purity
>98.0%(GC)(T)
Packaging
250g
Price
$258
Updated
2024/03/01
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2,3-Dihydroxynaphthalene Chemical Properties,Usage,Production

Chemical Properties

Off white to redish white powder. 2,3-Naphthalenediol [92-44-4], mp 161℃, gives a dark blue color with iron(III) chloride; is aminated to 2- amino-3-naphthol at 140℃ and 2,3-naphthalenediamine at 240℃; and couples with diazotized anilines in the 1- or 1,4-positions.

Uses

2,3-Naphthalenediol is used in cosmetics asa component of oxidative hair dye. It is usedat a concentration of <0.1%.

Uses

2,3-Dihydroxynaphthalene is used in making dyes, pigments, fluorescent whiteners, tanning agents, antioxidants, and antiseptics.

Uses

2,3-Dihydroxynaphthalene may be used in the following studies:

  • Construction of dinaphtho[2,1-b;2′,3′-d]furan-6-ol, via dehydration reaction in the presence of strong acid.
  • As fused ring catecholate type ligand for the surface modification of nanocrystalline TiO2 particles.
  • As adsorptive and competing ligand during the chemical speciation of iron in seawater by cathodic stripping voltammetry.
  • Synthesis of cyclotriphosphazene derivatives, used as non-halogen flame retardants

Definition

ChEBI: Naphthalene-2,3-diol is a naphthalenediol.

General Description

2,3-Dihydroxynaphthalene is a polyhydroxy phenol. It is an aromatic dihydroxy compound having hydroxyl groups at ortho positions. Its reaction with molybdenum(VI) complexes has been reported. The asymmetric oxidative coupling polymerization of 2,3-dihydroxynaphthalene using the Cu(I)-bisoxazoline complex as catalyst has been reported to afford poly(2,3-dihydroxy-1,4-naphthylene), having a continuous 1,1′-bi-2-naphthol main chain structure. The nitrodisplacement reaction between nitrophthalodinitriles and 2,3-dihydroxynaphthalene has been investigated.

Health Hazard

2,3-Naphthalenediol shows low toxicity andmild irritant actions on the skin and eyes. Theoral LD50 value for rats of a 5% solutionin propylene glycol may be on the orderof 675 mg/kg (calculated by the method ofWeil). The intravenous LD50 value for miceis 56 mg/kg. At 1% concentration, it causedslight eye irritation in female albino rabbitsand exhibited erythemal response in guineapigs. At the 0.1% level (concentration in hairdye), it had no reaction on human skin. Thiscompound was nonmutagenic in Salmonellatyphimurium strain tests.
There is very little information in the literatureon the toxicity of 2,3-naphthalenediol.Assessment by the CIR expert panel on thesafety of this compound as used in cosmeticshas been inconclusive (Cosmetic, Toiletryand Fragrance Association 1987b).

Synthesis

2,3-Dihydroxynaphthalene is prepared by caustic fusion of 3-hydroxynaphthalene-2,6-disulfonic acid followed by treatment with dilute sulfuric acid under pressure, or by acid desulfonation of 2,3-dihydroxynaphthalene-6-sulfonic acid.

2,3-Dihydroxynaphthalene Preparation Products And Raw materials

Raw materials

Preparation Products

2,3-diaminonaphthalene
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View Lastest Price from 2,3-Dihydroxynaphthalene manufacturers

HebeiShuoshengImportandExportco.,Ltd
Product
2,3-Dihydroxynaphthalene 92-44-4
Price
US $6.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
2000KG/Month
Release date
2024-08-06
Hebei Longbang Technology Co., Ltd
Product
2,3-Dihydroxynaphthalene 92-44-4
Price
US $6.00/kg
Min. Order
1kg
Purity
More than 99%
Supply Ability
2000KG/Month
Release date
2024-05-24
Hebei Jingbo New Material Technology Co., Ltd
Product
2,3-Dihydroxynaphthalene 92-44-4
Price
US $8.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
200000
Release date
2024-01-02

92-44-4, 2,3-DihydroxynaphthaleneRelated Search:

3,5-Dihydroxybenzoic acid Triclosan 1,3-Dihydroxyacetone Butylated Hydroxytoluene 1-Hydroxyethylidene-1,1-diphosphonic acid 1,6-DIHYDROXYNAPHTHALENE 98%,1,6-DIHYDROXYNAPHTHALENE pure Macleaya cordata extract Gossypol-acetic acid GOSSYPOL SANGUINARINE NITRATE CHELERYTHRINE CHLORIDE SANGUINARINE CHLORIDE APOGOSSYPOL HEXAACETATE 2 3-DIHYDROXYNAPHTHALENE-6-SULFONIC ACID SODIUM SALT 98% 1,1'-BI(2,3-NAPHTHODIOL) 2,3,6,7,10,11-Triphenylenehexol Nitidine chloride HYPOCRELLIN A

  • 2,3-Dihydroxynapthalene
  • Naphthalene-2,3-diol
  • Naphthalenediol-(2,3)
  • 2,3-DIHYDROXYNAPHTHALENE
  • 2,3-NAPHTHALENEDIOL
  • 2,3-Dihydroxynaphthylene
  • 2,3-dihydrroxynaphthalene
  • 2,3-Dihydroxynaphthalene 1g [92-44-4]
  • 2,3-Dihydroxynaphthalene, 98% 50GR
  • 2,3-DIHYDROXYNAPHTHALENE, SUBL.
  • 2 3-DIHYDROXYNAPHTHALENE 98%
  • 2,3-DihydroxylNaphthalene
  • Dihydroxynaphthalene
  • 2,3-Dihydroxynaphthalene,98%
  • 2,3-Dihydroxy
  • 2,3-NAPHTHALENEDIOL FOR SYNTHESIS
  • 2,3- twohydroxy naphthalene
  • 2,3-Dihydroxynaphthalene, 99%+
  • 2,3-Dihydroxynaphthalene >=98.0% (HPLC), purified by sublimation
  • 3-Dihydroxynaphthalene
  • 2,3-Dihydroxynaphthalene &gt
  • 2,3-Naphthalenediol@100 μg/mL in AcCN
  • 2,3-Dihydroxynaphthalene ISO 9001：2015 REACH
  • 2,3-Dihydroxynaphthalene, ≥98.0% (HPLC)
  • Naphthalin-2,3-diol
  • 2,3-Dihydroxynaphthalene, ≥ 97.0%
  • 92-44-4
  • 90-44-4
  • Organic Building Blocks
  • Oxygen Compounds
  • Polyols
  • Building Blocks
  • Cell Biology
  • Chemical Synthesis
  • DIG-DY
  • Organic Building Blocks
  • Oxygen Compounds
  • Polyols
  • Bioactive Small Molecules
  • Building Blocks
  • Aromatics
  • Naphthalene derivatives