Category: Chemistry and Industry

Heterocycloaddition for ring opening. (Organic Chemistry). Stephenson, G. Richard Heterocycloaddition chemistry of cyclopentadiene has been brought into play to provide a convenient source of polar strained structures for use in ring-opening cross metathesis (RCOM), catalysed by Grubb’s carbene (13). The symmetrical azidodicarboxylate dienophile (11) gave the cis stereoisomer (14) after …

Waveguide system.(Bundle Waveguide Technology system)(Brief Article) Panametrics, Inc has introduced the Bundle Waveguide Technology (BWT) system, which gives drift-free, obstructionless flow measurement of the most difficult liquids, gases and steam. It uses ultrasonic transducers to measure the flow of high-temperature gases and vapours, as well as liquids with high viscosity and high molecular weights. It […]

Michael addition reaction on propynoic acid and its esters; synthesis of insecticidally active aralkyl-3-substituted-2(E)-propenoates. Joshi, Gajanan D. Recently, the authors reported [1] the synthesis of Isotachin C (I), a sulphur-containing aromatic ester, isolated from New Zealand liverworts Balantiopsis Rosea. [2] The insecticidal and larvicidal properties exhibited by compound (I) prompted an investigation of structurally related […]

Onanda.com currency converter.(Brief Article) Going travelling? Ordering something from another country? If you want to know how much your dollars, pounds or other currencies are worth in almost every country from Afghanistan to Zimbabwe, http://www.oanda. com/convert/classic will tell you. Simply type in the amount of money you are interested in converting and select from two […]

Farewell DTI, welcome to DBERR.(UK government)(Department of Trade and Industry)(Department for Business, Enterprise and Regulatory Reform )(Brief article) Walter, Patrick The now defunct UK Department of Trade and Industry (DTI) has been replaced by the Department for Business, Enterprise and Regulatory Reform (DBERR) in a move the chemical industry has hailed as an ‘imaginative restructuring’. […]

Inks in black and white: advances in ink and toner chemistry are driving improvements in the quality of digital printing Sean Milmo Digital printing is one of the fastest expanding sectors in the graphics industry, with much of the impetus coming from the intense competition between the two main digital processes: inkjet and electrophotographic (EP) […]

Single-shot vial standards Whitehouse scientific produces BCR Mirror Standards, which are intended for use in calibrating any particle-size analysis technique and are traceable to BCR, NIST and NPL reference standards. There are five standards in the set, covering the size range 1-700[mu]m, Each is produced as a single-shot vial to ensure minimisation of sampling errors […]

Precious metal recovery: Joanne Frankham describes Johnson Matthey’s AquaCat technology for the recovery of precious metals Joanne Frankham In Brief * Precious metal catalysts have a long life and are cost-effective if the metal is recovered * Traditionally, spent catalysts are incinerated to recover the metal * The AquaCat process is an environmentally friendly metal […]

How to make a love potion Catherine Side SCI London Section, 23 October 2002. More than 40 enthusiastic London Section Members and their guests braved a cold October evening to hear Guy Birch-Jones of William Ransom & Son speak about functional foods, extraction and using natural materials in different applications. Guy began his talk by […]

Crosswords online www.phillynews.com/crossword If you’re a crossword fanatic and C&I’s fortnightly head-scratcher just isn’t enough, try this interactive site. You can choose your crossword size from four by four, six by six, and 13 by 14. The larger size provides a choice of 44 crosswords from The Philadelphia Daily News. Once you’ve chosen the game […]