Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Basic Information
Product Name: 2-Naphthalenethiol
CAS Number: 91-60-1
Alias: 2-Mercaptonaphthalene, β-Naphthyl mercaptan
Molecular Formula: C10H8S
Molecular Weight: 160.24
IUPAC Name: naphthalen-2-thiol
Structural Information
- Structure Type: Aromatic thiol compound
- Structural Features: Naphthalene ring with thiol (-SH) group at β-position; thiol group has strong reducibility, easy to form disulfide bonds under oxidation; can coordinate with heavy metal ions
Physical & Chemical Properties
- Appearance: White to light yellow crystalline solid
- Odor: Strong pungent sulfurous odor
- Melting Point: 81–83 °C
- Boiling Point: 286 °C
- Solubility: Insoluble in water; soluble in ethanol, methanol, chloroform, benzene, alkali aqueous solution (forms naphthalene thiolate salt)
- Stability: Easily oxidized in air to form di-2-naphthyl disulfide; unstable under strong oxidants; reacts with heavy metal salts to generate insoluble precipitates; stable under anhydrous sealed low-temperature storage
Synthesis & Applications
Production Method
2-Naphthol undergoes sulfuration and reduction, or 2-naphthalene sulfonyl chloride reduction to obtain crude product, recrystallized for purification.
Main Applications
- Rubber additive: Vulcanization regulator, antioxidant, metal surface adhesion auxiliary
- Organic synthesis intermediate: Raw material for sulfide, disulfide, thioether derivatives
- Analytical reagent: Precipitation agent for heavy metal ion detection
- Polymer chain transfer agent: Regulator for free radical polymerization
Safety & Storage Instructions
GHS Hazard Classification
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H410 Very toxic to aquatic life with long lasting effects
Personal Protection
Organic vapor respirator, chemical splash goggles, chemical-resistant nitrile gloves; all operations in fume hood, avoid direct skin contact and dust inhalation
Storage Condition
Hermetically sealed nitrogen-filled container, cool dark warehouse; completely isolated from oxidants, air, heavy metal salts
Transportation
General toxic organic solid; sealed packaging to prevent odor leakage, avoid water contact and aquatic environment pollution
Quality Specifications
- Purity: ≥98.0% (HPLC/GC)
- Loss on Drying: ≤0.3%
- Disulfide impurity: ≤1.0%
Information Summary Table
| Item | Specification |
| CAS Number | 91-60-1 |
| Product Name | 2-Naphthalenethiol |
| Synonym | 2-Mercaptonaphthalene, β-Naphthyl mercaptan |
| Molecular Formula | C10H8S |
| Molecular Weight | 160.24 |
| Appearance | Pale yellow crystalline solid, strong sulfur odor |
| Melting Point | 81–83°C |
| Solubility | Insoluble in water, soluble in organic solvents and alkaline liquor |
| Purity Standard | ≥98.0% |
| Storage Condition | Sealed nitrogen-filled cool dark storage, isolate oxidants |
| Hazard Property | Irritant to skin/respiratory tract, highly toxic to aquatic organisms |
| Main Usage | Rubber vulcanization auxiliary, heavy metal analytical reagent, organic sulfur synthesis intermediate |
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