1,5-Dihydroxynaphthalene
Also known as: 1,5-Naphthalenediol, Naphthalene-1,5-diol, 1,5-Dihydroxy naphthalene, C.I. 76625
1,5-Dihydroxynaphthalene (CAS 83-56-7) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C10H8O2 and a molecular weight of 160.169 g/mol. Key properties include a melting point of 259-261ºC, a boiling point of 375.4±15.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 193.5±15.0 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. It is listed by 1 supplier, from 3.19 to 8.24 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 83-56-7
- Jingsj CID
- J-1330684-5
- Molecular Formula
- C10H8O2
- Molecular Weight
- 160.169 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | >98.0%(GC) 500g | ¥1,593.00 | $0.48 /gBest ¥3.19/g CNY | CN China MOQ 500g | |
In Stock | >98.0%(GC) 25g | ¥206.10 | $1.23 /g ¥8.24/g CNY | CN China MOQ 25g |
Physicochemical Properties
| Melting Point | 259-261ºC |
|---|---|
| Boiling Point | 375.4±15.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 193.5±15.0 °C |
| Exact Mass | 160.052429 |
| PSA | 40.46000 |
| LogP | 1.96 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.726 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Customs & Trade Information
| HS Code | 2907299090 |
|---|---|
| Summary | 2907299090 polyphenols; phenol-alcohols。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:5.5%。general tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1,5-Dihydroxynaphthalene?
The CAS number of 1,5-Dihydroxynaphthalene is 83-56-7.
What are the molecular formula and molecular weight of 1,5-Dihydroxynaphthalene?
1,5-Dihydroxynaphthalene has molecular formula C10H8O2 and molecular weight 160.169 g/mol.
Which suppliers offer 1,5-Dihydroxynaphthalene?
1 supplier(s) listed; reference unit price ¥3.19–8.24 /g.
Is 1,5-Dihydroxynaphthalene hazardous?
1,5-Dihydroxynaphthalene has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of 1,5-Dihydroxynaphthalene?
For 1,5-Dihydroxynaphthalene, Upstream Products: 1,5-Dimethoxynaphthalene, 1-Naphthol-5-sulfonic acid, 1-Naphthol; Downstream Products: 3-Hydroxyphthalic anhydride, 1,2,3,4-Tetrahydro-1,5-naphthalenediol, Juglone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,5-Dihydroxynaphthalene (CAS 83-56-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1330684-5 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.