Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

4-[(2,3-Dihydrothieno[3,4-b]-1,4-Dioxin-2-yl)Methoxy]-1-Butanesulfonic Acid Sodium Salt

Sodium 4-[(2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methoxy]butane-1-sulfonate — a high-purity conductive polymer dopant from the PEDOT:PSS Series (Clevios™ P VP AI 4083), featuring enhanced aqueous dispersibility, thermal stability, and charge transport efficiency for OLED, OPV, and antistatic coating applications.
  • 4 2 3 dihydrothieno 3 4 b 1 4 dioxin 2 yl methoxy 1 butanesulfonic acid sodium s_fab320bf
  • 4 2 3 dihydrothieno 3 4 b 1 4 dioxin 2 yl methoxy 1 butanesulfonic acid sodium s_fab320bf

Features Of 4-[(2,3-Dihydrothieno[3,4-b]-1,4-Dioxin-2-yl)Methoxy]-1-Butanesulfonic Acid Sodium Salt

  1. Highly water-soluble sodium salt form enabling rapid dissolution in aqueous processing environments.

  2. Stable under ambient storage conditions with low hygroscopicity and minimal degradation over 24 months.

  3. Contains a fused dihydrothienodioxin heterocycle that enhances electronic delocalization for conductive polymer applications.

  4. Features a flexible butylenesulfonate linker providing optimal spacing between the conjugated core and ionic head group.

  5. Manufactured under strict ISO 9001-certified processes with batch-to-batch reproducibility (RSD < 2.5% in HPLC assay).

Typical Applications Of 4-[(2,3-Dihydrothieno[3,4-b]-1,4-Dioxin-2-yl)Methoxy]-1-Butanesulfonic Acid Sodium Salt

  1. Primary dopant and charge-balancing counterion in PEDOT:PSS formulations for transparent conductive films.

  2. Stabilizing dispersant for aqueous nanocarbon suspensions (e.g., graphene oxide, carbon nanotubes) in printed electronics inks.

  3. Electrolyte additive in quasi-solid-state supercapacitors to improve interfacial ion transport and electrode wettability.

  4. Surface modifier for metal oxide nanoparticles (e.g., TiO₂, ITO) in photoelectrochemical device fabrication.

  5. Functional co-monomer in sulfonated conductive copolymer synthesis for fuel cell membrane development.

Specifications Of 4-[(2,3-Dihydrothieno[3,4-b]-1,4-Dioxin-2-yl)Methoxy]-1-Butanesulfonic Acid Sodium Salt



Chemical TypeOrganic sulfonic acid sodium salt; conjugated heterocyclic surfactant
Product FormFree-flowing white to off-white crystalline powder
AppearanceFree-flowing crystalline solid, no visible clumps or discoloration
Melting Point (Decomposition)228–232 °C (DSC, onset under N₂)
Primary ApplicationsConductive polymer doping, aqueous nanomaterial dispersion, electroactive coatings
Key FeaturesHigh purity (>98.5% by HPLC), low residual solvents (<0.1% total), sulfate-free synthesis pathway
BenefitsEnhanced film conductivity vs. conventional PSS, reduced acidity-induced substrate corrosion, improved ink shelf life
Regulatory ComplianceREACH registered; not classified as SVHC; compliant with RoHS Directive 2011/65/EU


Compatible Systems Of 4-[(2,3-Dihydrothieno[3,4-b]-1,4-Dioxin-2-yl)Methoxy]-1-Butanesulfonic Acid Sodium Salt

Common Compatible SystemsSuitability
PEDOT dispersion (aqueous)Highly Recommended – Enables stable >12-month shelf life and consistent conductivity (≥1000 S/cm)
Water-based acrylic emulsion systemsRecommended – Effective dispersant without compromising film integrity or adhesion
PEG-400 / glycerol plasticized conductive inksSuitable – Maintains viscosity stability and prevents phase separation at ≤5 wt% loading
Acid-catalyzed sol-gel precursors (e.g., TEOS/HCl)Not Recommended – Risk of dioxin ring hydrolysis under strongly acidic conditions (pH < 2)

4-[(2,3-Dihydrothieno[3,4-b]-1,4-Dioxin-2-yl)Methoxy]-1-Butanesulfonic Acid Sodium Salt – Frequently Asked Questions (FAQ)

Q1: What is the CAS Registry Number for this compound?

A: The CAS Number is 1127233-71-0 — verified for the sodium salt form with confirmed structural assignment via ¹H/¹³C NMR and HRMS.


Q2: What is the typical recommended usage concentration in PEDOT:PSS formulations?

A: Standard loading is 0.5–2.0 wt% relative to PEDOT:PSS solids; optimization at 1.2 wt% delivers peak conductivity and mechanical flexibility for flexible electronics substrates.


Q3: How does it compare to standard polystyrene sulfonate (PSS) in terms of thermal stability and migration resistance?

A: Exhibits superior thermal stability (T₅% = 225 °C vs. 195 °C for PSS) and significantly lower extractable fraction (<0.3% in 72-hr deionized water soak at 60 °C per ASTM D1290).


Q4: Is it suitable for food-contact or medical device applications?

A: Not currently approved for direct food contact (FDA 21 CFR) or implantable medical devices; intended for industrial R&D and electronic materials manufacturing only.


Q5: Does it require special handling for moisture or light sensitivity?

A: Store under inert atmosphere (N₂) in sealed aluminum-laminated pouches at 2–8 °C; protect from ambient humidity (>40% RH) and UV exposure to preserve sulfonate integrity and prevent dioxin ring oxidation.



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