1,8-Dimercapto-3,6-dioxaoctane | CAS 14970-87-7
Versatile Low-Odor Polythiol Intermediate for Epoxy Systems and Advanced Materials
Product Overview
1,8-Dimercapto-3,6-dioxaoctane (DMDO, CAS 14970-87-7) is a highly functional thiol-based compound used across multiple high-performance formulations, including those developed by major industry players like Arkema and PPG. As a dithiol ether with a flexible C6 backbone, DMDO acts as a core intermediate for the synthesis of polythiols and polysulfides, especially in epoxy-based adhesives, sealants, and coatings.
Its dual thiol groups enable rapid crosslinking, low-temperature reactivity, and high metal affinity, making it ideal for use in formulations where cure speed and mechanical performance are critical.
Chemlyte Solutions supplies DMDO at ≥98% purity, manufactured under GMP-like protocols. With low odor, non-hygroscopic properties, and strong compatibility with epoxy and polyurethane systems, our DMDO is a trusted alternative in both industrial and R&D environments.
Technical Details
- Chemical Name: 1,8-Dimercapto-3,6-dioxaoctane
- CAS Number: 14970-87-7
- EINECS: 239-044-2
- Synonyms: 3,6-Dioxa-1,8-octanedithiol; DOODT
- Molecular Formula: C6H14O2S2
- Appearance: Clear to light yellow liquid
- Purity: ≥99.0%
- Solubility: Soluble in alcohols, ethers, polar aprotic solvents
- Storage: Store in tightly sealed containers under inert gas (nitrogen or argon)
✅ Application Highlights
DMDO is widely used in high-performance applications across electronics, automotive, marine, and aerospace industries. Its functional profile brings clear advantages:
✅ Fast Curing: In a two-part epoxy formulation by a multinational customer, adding DMDO reduced cure time from 24 hours to 8 hours, significantly improving throughput.
✅ Low Odor: Replacing traditional dithiols like BDT, DMDO creates a noticeably more user-friendly work environment—ideal for indoor or precision assembly settings.
✅ Low Viscosity: Easy to incorporate into automated dispensing or spray systems, making it well-suited for conformal coatings in electronics.
✅ Moisture Stability: Demonstrates excellent shelf-life and resistance to ambient humidity, especially beneficial for marine and tropical environments.
✅ Low-Temperature Reactivity: Cures efficiently at room temperature—ideal for on-site repairs or low-energy production setups.
✅ Polythiol Precursor: Used by multiple clients as a key intermediate in polysulfide sealants for bridge joints and rail track structures.
✅ Non-PBT: Environmentally safer alternative (not persistent, bioaccumulative, or toxic), aligned with REACH and other global standards.
Typical Uses
- Epoxy adhesives and sealants for electronics (e.g., LED encapsulation, PCB coatings)
- Intermediate for polythiol and polysulfide synthesis in automotive and construction sectors
- Additive in corrosion-resistant coatings for wind turbines and marine structures
- Surface modification agent (SAMs) for improved adhesion on metal substrates
- Crosslinker in biomedical sensor development
- Functional reagent in analytical chemistry and surface engineering
Packaging & Delivery
- Standard Packaging: 1 kg | 25 kg | 250 kg
- Custom Packaging: Available upon request
- Documentation: COA, MSDS, TDS included
- Logistics: Global export support with short lead times
Why Chemlyte Solutions?
✅ Trusted alternative to materials used in Arkema/PPG systems
✅ In-stock supply and flexible batch sizes
✅ 10+ years of chemical sourcing and scale-up expertise
✅ Technical support from sampling to full-scale implementation
✅ Regulatory transparency and full documentation
