98485-71-3

Basic information

• Product Name: Bis(2,3-epithiopropyl)disulfide
• Synonyms: BRL 553;Bis(2,3-epithiopropyl)disulfide;Di(2,3-epithiopropyl)disulphide;Dithiiran-2-ylmethyl disulfide;2,2'-(disulfanediyldimethanediyl)dithiirane;DISULFIDE,BIS(2,3-EPITHIOPROPYL)
• CAS NO: 98485-71-3
• Molecular Formula: C₆H₁₀S₄
• Molecular Weight: 210.409
• Mol File: 98485-71-3.mol
• Article Data: 8

Chemical Properties

• CAS DataBase Reference: Bis(2,3-epithiopropyl)disulfide(CAS DataBase Reference)
• NIST Chemistry Reference: Bis(2,3-epithiopropyl)disulfide(98485-71-3)
• EPA Substance Registry System: Bis(2,3-epithiopropyl)disulfide(98485-71-3)

Safety Data

• Hazardous Substances Data: 98485-71-3(Hazardous Substances Data)

Upstream product

• 5521-80-2 1,8-dichloro-2,7-dihydroxy-4,5-dithiaoctane 

Relevant articles and documents

METHOD FOR PRODUCING (POLY)SULFIDE COMPOUND AND METHOD FOR PRODUCING EPISULFIDE COMPOUND

PROBLEM TO BE SOLVED: To provide a method for producing (poly)sulfide compound that is excellent in production efficiency and reduced in production cost. SOLUTION: Provided is a method for producing (poly)sulfide compound in which thiol compounds represented by the formula (1) are reacted with each other in the presence of epihalohydrins, one or more selected from M(SH)n, an amine and pyridines, and a sulfur to form (poly)sulfide compound and at the same time by-produced hydrogen sulfide is reacted with the epihalohydrins to form the thiol compound. SELECTED DRAWING: None COPYRIGHT: (C)2019,JPOandINPIT

Cyclic sulfide preparation method

The invention provides a cyclic sulfide preparation method. The cyclic sulfide preparation method includes the following steps that (A) one of halogenated alcohol and halogenated epoxy propane is mixed with an alkaline catalyst in a solvent to obtain a mixed solution; (B) the mixed solution is mixed with a sulfur hydrogenated metallic solution, reaction is performed after air is led, and a compound with a structure shown by a formula (II); (C) thiourea and a water-soluble solvent are mixed, a catalyst is added, then the compound with the structure shown by the formula (II) is added, cooling is performed after first reaction, the obtained product is mixed with an alkaline solution, and the cyclic sulfide with a structure shown by a formula (I) is obtained after second reaction. This application also provides a preparation of sulfur compounds, the difference is that step C). The difference of the cyclic sulfide preparation method is the step (C). The cyclic sulfide prepared by means of the cyclic sulfide preparation method is short in reaction time, high in reaction efficiency and high in yield and content.

Method of Producing Thioepoxy Compound for Optical Material and Polymerizable Composition for Thioepoxy based Optical Material Comprising the Compound

The present invention relates to a thioepoxy compound from which a high-quality optical material having a good and clear color and causing no whitening can be obtained, and a polymerizable composition for a thioepoxy-based optical material comprising the same. The present invention provides a method for preparing a thioepoxy compound for an optical material, which uses an epichlorohydrin compound as a starting material, wherein the epichlorohydrin compound has a total content of specific impurities, including acrolein, allyl chloride, 1,2-dichloropropane and 2,3-dichloropropene, of 1 wt% or less. According to the present invention, it is possible to obtain a thioepoxy compound causing less coloration by adjusting the content of specific impurities in the epichlorohydrin compound. In addition, the resultant thioepoxy compound can be used to obtain a high-quality transparent thioepoxy-based optical material having a good color and causing no whitening. The thioepoxy-based optical material according to the present invention is useful for corrective lenses, sunglass lenses, fashion lenses, metachrosis lenses, camera lenses, and lenses for optical devices.COPYRIGHT KIPO 2016