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Specialized in1,9-Nonanedithiol CAS 3489-28-9and related product development and production

Chemical Name: 1,9-Nonanedithiol
Synonyms: 1,9-Dimercaptononane
CAS No.: 3489-28-9
Molecular Fomula: C9H20S2
Molecular weight: 192.39

Samples: Available / Stock: Sufficient
Estimated delivery time: 3-5 days

1,9-Nonanedithiol CAS 3489-28-9: Comprehensive User Guide

Table of Contents

1. Product Overview & Specifications

1,9-Nonanedithiol (CAS 3489-28-9) is a dithiol compound with the molecular formula C9H20S2. It features two thiol (-SH) groups at terminal positions, making it highly reactive in surface modification and nanotechnology applications.

Key Parameters:

Parameter 1,9-Nonanedithiol Comparable Thiols
Molecular Weight 192.38 g/mol Octanedithiol: 178.34 g/mol
Boiling Point 285-290°C Decanedithiol: 295-300°C
Solubility Ethanol, THF, DMF Limited in polar solvents
Storage 2-8°C under nitrogen Similar requirements

2. Applications & Industrial Uses

Core Applications:

  • Surface Functionalization: Forms self-assembled monolayers (SAMs) on gold and semiconductor surfaces
  • Nanoelectronics: Molecular wiring in quantum dot assemblies
  • Biosensors: Anchor molecules for protein immobilization
  • Lubricant Additives: Extreme pressure performance enhancer

3. Usage Guidelines & Best Practices

Recommended Protocol for SAM Formation:

  1. Prepare 1 mM solution in ethanol
  2. Immerse substrate for 12-24 hours
  3. Rinse with pure ethanol
  4. Dry under nitrogen stream

Safety Note: Use in fume hood with nitrile gloves due to thiol volatility.

4. Case Studies

Case 1: Gold Nanoparticle Stabilization

A research team achieved 6-month colloidal stability using 0.5% 1,9-Nonanedithiol as capping agent, demonstrating superior performance versus shorter-chain alternatives.

5. Client Success Stories

Electronics Manufacturer A (Shenzhen, China)

Implemented 1,9-Nonanedithiol in MEMS devices:

  • 35% reduction in contact resistance
  • Enhanced device lifetime by 2.8×

University Research Lab B (Tokyo, Japan)

Developed novel biosensor platform achieving 10-12 M detection limits through optimized SAM formation.

6. Request Customized Solutions

Our technical team provides:

  • Bulk quantities (100g to 100kg batches)
  • Custom purity grades (98%-99.9%)
  • Application-specific formulation support

Contact our specialists:
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Drug impurities to intermediates. Years of expertise.

Experience in the synthesis of complex compounds derived from American technology
Focus on the synthesis of difficult compounds
ISO 17034 dual system certification
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A 70+ R&D team led by Chinese and foreign doctors
150 pieces (sets) of R&D equipment, 120+ fume hoods
18 patents

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Through more than ten years of continuous technological innovation and experience accumulation, the team's R&D personnel have established a complete quality management system for CATO, and have successively obtained ISO9001, ISO17034, CNAS and other international certifications.
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More than 150 sets of equipment to ensure quality.

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Over 1000 cases. Synthesize complex compounds.

Currently, CATO serves more than 500 pharmaceutical companies, biotechnology and other companies around the world. Project types cover the entire cycle from pre-clinical to commercialization stages. As of 2020, CATO has delivered more than 1,000 projects in total.
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Delivery time

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Can additional test indicators be added?

We can provide moisture, UV, IR, HNMR, CNMR, two-dimensional nuclear magnetic spectroscopy, optical rotation detection, elemental analysis, TGA analysis and residue analysis and other related tests to support personalized needs.

Technical direction

In the early stage, our company mainly engaged in drug impurity synthesis and standard product production, with core technologies in chirality, fluorine chemistry, and heterocycles.

Why Chem-iso’s delivery rate is guaranteed to be 99.99%

5000+

square meter R&D center

150+

China(set) of R&D equipment

150+

Fume hood

180+

R&D team

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