S₂₀

Base Information

• Chemical Name: S₂₀
• CAS No.: 42817-30-1
• Molecular Formula: S₂₀
• Molecular Weight: 641.32
• Mol file: 42817-30-1.mol

Synonyms:S₂₀

Chemical Property of S₂₀

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of S₂₀

There total 2 articles about S₂₀ which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 36.0%

disulfur dichloride (10025-67-9) + potassium iodide (7681-11-0) → sulfur (10544-50-0) + hexasulfur (13798-23-7) + cyclo-dodecasulfur (14999-38-3) + S20 (42817-30-1) + S18 (41371-12-4)

Guidance literature:

In carbon disulfide; water; byproducts: S(x); CS2 soln. of S2Cl2 shaked with aq. KI soln. for 5 min, standing at 20°C for ca 15 min, org. phase sepd., washed with Na2S2O3 soln. (elimination of I2) various S contg. CS2 soln. sepd., dried with CaCl2, filtered,; concd. in vac. at 20°C to small volume, n-pentane added, oily by-products sepd., decanted soln. cooled to -78°C, S6 crystd. together with S8, purifn. repeated recrystn. from CS2 at -78°C give S6, all products sepd.;

Reference yield: 8.0%

sulfuryl dichloride (7791-25-5) + bis(η-cyclopentadienyl)titana(IV)cyclohexasulfane → bis(cyclopentadienyl)titanium dichloride (1271-19-8) + cyclodecasulfur (106763-15-9) + S20 (42817-30-1)

Guidance literature:

In carbon disulfide; byproducts: S7, S8, S9; complex and CS2 stirred for 10 min at 25°C with exclusion of moisture, SO2Cl2 soln. rapidly added with stirring, reacted for 30 min; further by-products: S12, S14, S15, S16, S19, S25, S30; filtered, concd. at 70°C, dried over MgSO4, cooled to -78°C, pptd. for 7-10 d, rapidly filtered, extd. (CS2 at 25°C for 15min) with crushing, crude product washed with CS2, then with CHCl3, dried in air, recrystd. (CS2);

upstream raw materials:

disulfur dichloride

potassium iodide

sulfuryl dichloride

Refernces