2781-02-4

Basic information

• Product Name: Tetra(ethylene glycol) dithiol
• Synonyms: Tetra(ethylene glycol) dithiol ;Tetra(ethylene glycol) dithiol 97%;SH-PEG3-SH
• CAS NO: 2781-02-4
• Molecular Formula: C₈H₁₈O₃S₂
• Molecular Weight: 226.35672
• Mol File: 2781-02-4.mol
• Article Data: 7

Chemical Properties

• Flash Point: >110℃
• Appearance: /
• Density: 1.100 g/mL at 25 °C
• Refractive Index: n20/D1.502
• Storage Temp.: 2-8°C
• CAS DataBase Reference: Tetra(ethylene glycol) dithiol(CAS DataBase Reference)
• NIST Chemistry Reference: Tetra(ethylene glycol) dithiol(2781-02-4)
• EPA Substance Registry System: Tetra(ethylene glycol) dithiol(2781-02-4)

Safety Data

• Hazard Codes: T
• Statements: 22-23-36/37/38
• Safety Statements: 26-45
• RIDADR: UN 2810 6.1 / PGIII
• WGK Germany: 3
• Hazardous Substances Data: 2781-02-4(Hazardous Substances Data)

Upstream product

• 112-60-7 Tetraethylene glycol 
• 37860-51-8 tetraethylene glycol di(p-toluenesulfonate) 
• 825627-76-7 S,S‘-(3,6,9-trioxaundecane-1,11-diyl)-bis(thioacetate) 
• 638-56-2 1,11-dichloro-3,6,9-trioxaundecane 
• 17198-23-1 imidazolidine-2-thiol 
• 31255-26-2 1-bromo-2-{2-[2-(2-bromoethoxy)ethoxy]-ethoxy}ethane 

Downstream Products

• 1345865-71-5 C₆₀H₉₀O₉S₂Si₈ 
• 1198800-12-2 2,2'-[oxybis(ethane-2,1-diyloxyethane-2,1-diylthio)]bis[3,5,6-tris(aziridin-1-yl)benzo-1,4-quinone] 
• 668491-20-1 [(μ-σ,π-PhCH=CPh)Fe2(CO)6]2[μ-SCH2(CH2OCH2)3CH2S-μ] 
• 668491-23-4 [(μ-σ,π-PhCH=CH)Fe2(CO)6]2[μ-SCH2(CH2OCH2)3CH2S-μ] 
• 668491-09-6 [(mu.-PhS)Fe2(CO)6]2[μ-SCH2(CH2OCH2)3CH2S-μ] 

Relevant articles and documents

Synthetic and electrochemical studies on electroactive ionophores based on the di-η-cyclopentadienyl-molybdenum and -tungsten fragments

The compound reacts with HSCH2(CH2OCH2)3CH2SH in the presence of base giving the metalla-crown ether complex which can undergo a reversible one-electron oxidation.Treatment of (M=Mo or W) with 4'-carboxybenzo-15-crown-5 and base gives the complexes 2>, which also undergo reversible oxidation.Small changes in the E1/2 (2> (M=Mo or W) prepared from the sodium salt of (benzo-15-crown-5) -4'-thiol and , undergo a reversible one-electron oxidation and the E1/2 is shifted anodically upon addition of alkali metal cations.

Optimized methods for preparation of 6I-(ω-sulfanyl-alkylenesulfanyl)-β-cyclodextrin derivatives

A general high-yielding method for the preparation of monosubstituted β-cyclodextrin derivatives which have attached a thiol group in position 6 is described. The thiol group is attached through linkers of different lengths and repeating units (ethylene glycol or methylene). The target compounds were characterized by IR, MS and NMR spectra. A simple method for their complete conversion to the corresponding disulfides as well as a method for the reduction of the disulfides back to the thiols is presented. Both, thiols and disulfides are derivatives usable for well-defined covalent attachment of cyclodextrin to gold or polydopamine-coated solid surfaces.

Synthesis and extraction properties of oxathiacrown compounds containing benzyl groups

8-Benzyl-1.4-dioxa-7,10-dithiacyclododecane and 11-benzyl-1,4,7-trioxa-10, 13-dithiacyclopentadecane were obtained by the interaction of (2,3-dibromo-1-propyl)benzene with 1,8-dimercapto-3,6-dioxaoctane and 1,11-dimercapto-3,6,9-trioxaundecane. The extrac