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
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)
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..…
N-Bromosuccinimide Price
- Product number
- 8.14578
- Product name
- 2,3-Naphthalenediol
- Purity
- for synthesis
- Packaging
- 50g
- Price
- $101
- Updated
- 2024/03/01
- Product number
- 37760
- Product name
- 2,3-Dihydroxynaphthalene
- Purity
- ≥98.0% (HPLC)
- Packaging
- 50g
- Price
- $147
- Updated
- 2024/03/01
- Product number
- 37760
- Product name
- 2,3-Dihydroxynaphthalene
- Purity
- ≥98.0% (HPLC)
- Packaging
- 250g
- Price
- $228
- Updated
- 2024/03/01
- Product number
- D0593
- Product name
- 2,3-Dihydroxynaphthalene
- Purity
- >98.0%(GC)(T)
- Packaging
- 25g
- Price
- $40
- Updated
- 2024/03/01
- Product number
- D0593
- Product name
- 2,3-Dihydroxynaphthalene
- Purity
- >98.0%(GC)(T)
- Packaging
- 250g
- Price
- $258
- Updated
- 2024/03/01
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
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View Lastest Price from 2,3-Dihydroxynaphthalene manufacturers
- 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
- 2024-04-24
- Product
- 2,3-Dihydroxynaphthalene 92-44-4
- Price
- US $100.00-1.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- g-kg-tons, free sample is available
- Release date
- 2023-12-25
- 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