1,5-Dihydroxynaphthalene
1,5-Dihydroxynaphthalene (CAS 83-56-7), with the molecular formula C10H6(OH)2 and a molar mass of 160.17 g/mol, is an organic compound serving as a valuable building block in chemical synthesis. It is frequently employed in the creation of dyes and as an intermediate in the production of pharmaceuticals and other complex organic molecules. This compound is supplied by TSS with an assay of 97%.
- IUPAC
- 1,5-Naphthalenediol
- Synonyms
- 1,5-NaphthalenediolNaphthalene-1,5-diol

Dye Intermediate
1,5-Dihydroxynaphthalene is a key intermediate in the synthesis of various azo dyes and other colorants. Its chemical structure allows for functionalization, leading to diverse chromophores.
Organic Synthesis Building Block
As a dihydroxylated naphthalene derivative, this compound is utilized in organic synthesis for constructing more complex molecular architectures. It finds application in the development of novel compounds.
Pharmaceutical Intermediates
The compound serves as a precursor in the multi-step synthesis of certain pharmaceutical agents. Its naphthalene core can be modified to achieve desired biological activity.
| Molecular weight | 160.17 |
|---|---|
| Linear formula | C10H6(OH)2 |
| Assay | 97% |
| Melting point | 259-261 °C (dec.)(lit.) |

Hazard statements
- H302Harmful if swallowed
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22 |
| Safety statements (S) | 22-24/25 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1,5-Dihydroxynaphthalene used for?
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1,5-Dihydroxynaphthalene is primarily used as a building block in chemical synthesis, particularly in the production of dyes and as an intermediate for pharmaceuticals.
What is the CAS number and chemical formula for 1,5-Dihydroxynaphthalene?
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The CAS number is 83-56-7 and the linear chemical formula is C10H6(OH)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1,5-Dihydroxynaphthalene with an assay of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 1,5-Dihydroxynaphthalene be handled safely?
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This compound is harmful if swallowed (H302). When handling, wear a dust mask type N95 (US), eyeshields, and gloves. Avoid breathing dust.
Is 1,5-Dihydroxynaphthalene a controlled substance?
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The provided data does not indicate that 1,5-Dihydroxynaphthalene is a controlled substance.
How can I request a quote or sample of 1,5-Dihydroxynaphthalene?
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Please contact our sales team via the website or by calling us to request a quote or a sample.
How is 1,5-Dihydroxynaphthalene packed and exported?
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We ensure secure and compliant packaging for all our chemicals, suitable for domestic and international export according to regulatory standards.
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