1283154-10-8

Basic information

• Product Name: potassium 2,5-bis(prop-2-ynyloxy)benzenesulfonate
• Synonyms: potassium 2,5-bis(prop-2-ynyloxy)benzenesulfonate
• CAS NO: 1283154-10-8
• Molecular Weight: 304.365
• Mol File: 1283154-10-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: potassium 2,5-bis(prop-2-ynyloxy)benzenesulfonate(CAS DataBase Reference)
• NIST Chemistry Reference: potassium 2,5-bis(prop-2-ynyloxy)benzenesulfonate(1283154-10-8)
• EPA Substance Registry System: potassium 2,5-bis(prop-2-ynyloxy)benzenesulfonate(1283154-10-8)

Safety Data

• Hazardous Substances Data: 1283154-10-8(Hazardous Substances Data)

Upstream product

• 21799-87-1 potassium 2,5-dihydroxybenzene sulfonate 
• 106-96-7 propargyl bromide 

Relevant articles and documents

New proton conducting membranes with high retention of protic ionic liquids

New proton conducting membranes, exhibiting a high proton conductivity (10-2 S cm-1, without humidification at 160°C), based on the ionic liquid (IL) 1-butyl-3-methylimidazolium tetrafluoroborate (BMIm-BF4) were investigated. The incorporation of a similar initial IL loading was found to reduce the proton conductivity loss of a sulfonated polydiacetylene based membrane, i.e. SPDA70-IL70 by 19.2% and IL-based Nafion by 64.6%; additionally, the SPDA70-IL70 was able to maintain a proton conductivity of more than 10-3 S cm-1 after centrifugation. The introduction of both a cross-linked structure and a high degree of sulfonation into the polymer matrix, resulted in significant improvements to the membranes' thermal properties, the dispersion of ionic domains, and the retention of IL - together with a reduction of proton conductivity loss. The membranes, which have a high degree of sulfonation with thermally cross-linkable diacetylene in the polymer's main chain, avoid the drawback of poor miscibility commonly associated with sulfonated polymers and cross-linking agents. When the composite membrane was used in a H2/O2 fuel cell without humidification at 100°C, a power density > 250 mA cm-2 was achieved together with a maximum current denisty of 122 mW cm-2.