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
- Molecular Weight:
- 160.17
- MDL Number:
- MFCD00004073
- MOL File:
- 92-44-4.mol
- MSDS File:
- SDS
| Melting point | 161-165 °C (lit.) 162-164 °C |
|---|---|
| Boiling point | 246.06°C (rough estimate) |
| Density | 1.0924 (rough estimate) |
| bulk density | 500kg/m3 |
| 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 |
| pka | 9.10±0.40(Predicted) |
| form | Powder |
| 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) |
| EWG's Food Scores | 1-4 |
| FDA UNII | O9U131030Z |
| NIST Chemistry Reference | 2,3-Naphthalenediol(92-44-4) |
| EPA Substance Registry System | 2,3-Naphthalenediol (92-44-4) |
| UNSPSC Code | 12352104 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS05,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H302-H318 | |||||||||
| Precautionary statements | P264-P270-P280-P301+P312-P305+P351+P338-P501 | |||||||||
| 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 | |||||||||
| NFPA 704 |
|
2,3-Dihydroxynaphthalene price More Price(30)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 8.14578 | 2,3-Naphthalenediol for synthesis | 92-44-4 | 50g | $101 | 2024-03-01 | Buy |
| Sigma-Aldrich | 37760 | 2,3-Dihydroxynaphthalene ≥98.0% (HPLC) | 92-44-4 | 50g | $147 | 2024-03-01 | Buy |
| Sigma-Aldrich | 37760 | 2,3-Dihydroxynaphthalene ≥98.0% (HPLC) | 92-44-4 | 250g | $228 | 2024-03-01 | Buy |
| TCI Chemical | D0593 | 2,3-Dihydroxynaphthalene >98.0%(GC)(T) | 92-44-4 | 25g | $40 | 2024-03-01 | Buy |
| TCI Chemical | D0593 | 2,3-Dihydroxynaphthalene >98.0%(GC)(T) | 92-44-4 | 250g | $258 | 2024-03-01 | Buy |
2,3-Dihydroxynaphthalene Chemical Properties,Uses,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-Dihydroxynaphthalene is used in making dyes, pigments, fluorescent whiteners, tanning agents, antioxidants, and antiseptics.
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 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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| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Weibang Biotechnology Co., Ltd | +8617732866630 | bess@weibangbio.com | China | 18147 | 58 |
| Hebei Jingbo New Material Technology Co., Ltd | +8619931165850 | hbjbtech@163.com | China | 1000 | 58 |
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20262 | 58 |
| Hebei Saisier Technology Co., LTD | +86-18400010335 +86-18034520335 | admin@hbsaisier.cn | China | 1015 | 58 |
| Hebei Longbang Technology Co., LTD | +86-18633929156 +86-18633929156 | admin@hblongbang.com | China | 971 | 58 |
| HebeiShuoshengImportandExportco.,Ltd | +86-18532138899 +86-18532138899 | L18532138899@163.com | China | 939 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21632 | 55 |
| QINGDAO HONG JIN CHEMCIAL CO.,LTD. | 532-83657313 18663969289; | hjt@hong-jin.com | China | 227 | 58 |
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28172 | 58 |
| Xiamen AmoyChem Co., Ltd | +86-86-5926051114 +8618959220845 | sales@amoychem.com | China | 6383 | 58 |
View Lastest Price from 2,3-Dihydroxynaphthalene manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-02-14 | 2,3-Dihydroxynaphthalene
92-44-4
|
US $6.00 / KG | 1KG | More than 99% | 2000KG/Month | Hebei Saisier Technology Co., LTD | |
 |
2025-02-14 | 2,3-dihydroxynaphthalene
92-44-4
|
US $0.00 / Kg/Drum | 1Kg/Drum | 99% | 5000KG | Hebei Mujin Biotechnology Co.,Ltd | |
 |
2025-02-14 | 2,3-Dihydroxynaphthalene
92-44-4
|
US $6.00 / kg | 1kg | 99% | 2000KG/Month | HebeiShuoshengImportandExportco.,Ltd |
-
- 2,3-Dihydroxynaphthalene
92-44-4
- US $6.00 / KG
- More than 99%
- Hebei Saisier Technology Co., LTD
-
- 2,3-dihydroxynaphthalene
92-44-4
- US $0.00 / Kg/Drum
- 99%
- Hebei Mujin Biotechnology Co.,Ltd
-
- 2,3-Dihydroxynaphthalene
92-44-4
- US $6.00 / kg
- 99%
- HebeiShuoshengImportandExportco.,Ltd
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