2-Naphthol
2-Naphthol (CAS: 135-19-3; Formula: C10H7OH; Molar Mass: 144.17) is a significant aromatic organic compound. It presents as a colourless to pale yellow crystalline solid. This versatile chemical finds extensive use as a key intermediate in the synthesis of dyes, pigments, agrochemicals, and pharmaceuticals. Its photochemical properties also lend themselves to applications in fluorescent indicators.
- IUPAC
- β-Naphthol,2-Hydroxynaphthalene
- Synonyms
- 2-Hydroxynaphthalenebeta-Naphthol
Dye and Pigment Synthesis
2-Naphthol is a crucial precursor for azo dyes and pigments, contributing to vibrant colours used in textiles and inks.
Pharmaceutical Intermediates
It serves as a building block in the synthesis of various pharmaceutical compounds, enabling the creation of active pharmaceutical ingredients.
Agrochemical Production
The compound is utilised in the manufacturing of certain pesticides and herbicides, playing a role in crop protection.
Fluorescent Indicators
Exhibiting fluorescence properties (λex 320 nm; λem 410 nm in 0.1 M NaOH), 2-Naphthol is employed in the development of pH-sensitive probes and indicators.
| Molecular weight | 144.17 |
|---|---|
| Linear formula | C10H7OH |
| Assay | ≥98.0% (GC) |
| Boiling point | 285-286 °C(lit.) |
| Vapour pressure | 10 mmHg (145.5 °C) |
| Vapour density | 4.97 (vs air) |
| Impurities tested | ≤1% 1-naphthol |
| Melting point | 120-122 °C(lit.)120-122 °C |
Hazard statements
- H302Harmful if swallowed
- H332Harmful if inhaled
- H400Very toxic to aquatic life
Precautionary statements
- P273Avoid release to the environment
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Flash point | 153 °C / 307.4 °F |
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 20/22-50 |
| Safety statements (S) | 24/25-61 |
| Ignition residue | ≤0.05% |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Gene Information | human ... CYP1A2(1544) |
|---|---|
| Fluorescence | λex 320 nm; λem 410 nm in 0.1 M NaOH |
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 2-Naphthol used for?
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2-Naphthol is primarily used as an intermediate in the synthesis of dyes, pigments, pharmaceuticals, and agrochemicals. It also finds application as a fluorescent indicator.
What are the CAS number and formula for 2-Naphthol?
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The CAS number for 2-Naphthol is 135-19-3, and its chemical formula is C10H7OH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Naphthol with an assay of ≥98.0% (GC). TSS does not represent this product as USP, BP, or EP grade.
How should 2-Naphthol be handled safely?
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Handle 2-Naphthol with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. It is harmful if swallowed or inhaled and is toxic to aquatic life.
How is 2-Naphthol packed, shipped, and exported?
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2-Naphthol is packed in compliance with international shipping regulations, including UN 3077 classification for transport. TSS is a global supplier and exporter.
How can I request a sample or quote for 2-Naphthol?
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To request a sample or quote for 2-Naphthol, please contact the TSS sales department through our website or by phone.
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