For professionals in the chemical industry, a deep understanding of the materials they work with is critical for safe and effective application. 1-Naphthalenethiol, known by its CAS number 529-36-2, is a valuable chemical intermediate with specific properties that dictate its handling and applications. This article provides a comprehensive overview of 1-Naphthalenethiol's key characteristics and outlines essential safety and handling procedures for industrial and laboratory settings.

Key Physical and Chemical Properties

1-Naphthalenethiol is a derivative of naphthalene where a thiol group (-SH) is attached to the first position of the aromatic ring. Its primary properties include:

  • Appearance: It is typically described as a clear liquid, ranging in color from light yellow to yellow.
  • Molecular Formula: C10H8S
  • Molecular Weight: Approximately 160.24 g/mol
  • CAS Number: 529-36-2
  • Purity: Commonly supplied at purities of 98% or higher, making it suitable for many demanding synthetic applications.
  • Boiling Point: Reported as 131°C at 5 mmHg.
  • Flash Point: Generally greater than 110°C, indicating moderate flammability.
  • Density: Approximately 1.15 g/mL at room temperature.
  • Solubility: Soluble in organic solvents like diethyl ether and ethanol; sparingly soluble in water and dilute alkalis.
  • Reactivity: The thiol group is nucleophilic and can undergo oxidation to form disulfides. It is sensitive to air and light, which can lead to degradation or oxidation over time.

Safety and Handling Guidelines

Proper handling of 1-Naphthalenethiol is essential to ensure worker safety and maintain product integrity. Key safety considerations include:

  1. Personal Protective Equipment (PPE): Always wear appropriate PPE, including chemical-resistant gloves (e.g., nitrile or neoprene), safety goggles or a face shield, and protective clothing. A lab coat or apron is recommended.
  2. Ventilation: Work in a well-ventilated area, preferably under a fume hood, to minimize inhalation of vapors. The compound can be harmful if inhaled, swallowed, or absorbed through the skin.
  3. Storage: Store 1-Naphthalenethiol in a cool, dry, and well-ventilated place, away from direct sunlight, heat sources, and incompatible materials such as strong oxidizing agents. It is often recommended to store it under an inert atmosphere (e.g., nitrogen or argon) to prevent oxidation. Keep containers tightly sealed when not in use.
  4. First Aid Measures: In case of contact, immediately flush skin or eyes with plenty of water. If inhaled, move to fresh air. If swallowed, seek immediate medical attention and show the product label or SDS.
  5. Disposal: Dispose of waste 1-Naphthalenethiol and contaminated materials according to local, regional, and national regulations. Never discharge directly into drains or the environment.

Where to Buy and Learn More

When purchasing 1-Naphthalenethiol, it is crucial to buy from reputable manufacturers and suppliers who provide comprehensive safety data sheets (SDS) and Certificates of Analysis (CoA). Understanding the properties and handling requirements of this chemical will ensure its effective and safe use in your applications. For specific pricing and availability, engaging with established chemical suppliers, including those based in China, is often a practical step for businesses seeking to buy this vital intermediate.