Alfa Chemistry Blog

With the development of coordination chemistry, the application of nitrogen-donor ligands has become more widespread. To meet the increasing demand arising from market and industry, Alfa Chemistry Catalysts announces the release of porphyrin ligands and phthalocyanine ligands , one type of nitrogen-donor ligands, for wide applications in fields like materials science, organic synthesis and biomedicine. The porphyrin ligand is a planar, dianionic macrocycle with four nitrogen donors in a square planar arrangement, with a hole size of radius close to 2.0 Å. Phthalocyanine (Pc) molecules are macrocyclic compounds composed of an inner porphyrazine ring that connects four isoindole groups giving rise to the characteristic cross-like shape. “Porphyrin ligands and phthalocyanine ligands are solids with higher melting points and darker colors. They are advantageous due to their relative stableness when exposed to light and heat. Another prominent chemical property is that they are able to ...

While providing various types of functional polymers that are readily available, Alfa Chemistry’s management also fully understands that there is a vast demand for tailor-made polymers. Therefore, the company recently announces its ability for custom synthesis of various functional polymers. For researchers or manufacturers who are seeking for functional polymers of special type or size that are not obtainable on the market, they are encouraged to reach Alfa Chemistry’s professional synthesis team. “Having accumulated strong synthetic expertise through our vast range of catalog products, we are proud to say that once a detailed synthesis request is received from customers, a custom synthesis and manufacturing project will be launched swiftly and should be finished within the timeframe settled by both parties. With many years' experience working with polymer companies, our team is prepared to successfully complete any challenging custom synthesis opportunity, from the milligram...

In recent decades, molecular sieve and zeolite have found wide use for the separation of fixed gases. Emerged as a well-reputed supplier for various materials since last year, Alfa Chemistry Materials today announces to provide a comprehensive range of molecular sieves , which are of great interest to the materials community for many applications. Molecular sieves are synthetic and naturally occurring zeolites with well-defined structures. They stand out among various materials because they have pore structure, catalytic, conductive and magnetic properties. There are two common molecular sieves, i.e. calcium aluminium silicate and sodium aluminium silicate. The former has a pore size of 0.5 nm, whereas the latter has a pore size of approximately 1 nm. “Molecular sieves are of great importance because they can be tailored for a range of different applications. Molecules can be separated based on afferent sizes, so molecular sieves are very appropriate to be used in size-exclusion ch...

After releasing the chlorinated phenol and resin acid standards last month, Alfa Chemistry announces to further diversify its supply of environmental goods standards by adding a new type — drinking water disinfection byproducts standards , which can be used in the R&D to better drinking water disinfection methods.   Drinking water comes from sources like lakes, rivers, reservoirs, and ground water aquifers, and hence need to be disinfected before consuming by people. However, while disinfectants are added during any part of the water treatment process, a wide variety of disinfection byproducts will be produced, which may pose health concerns for people. “Disinfectants can react with naturally-occurring materials in the water, which result in the formation of byproducts such as THM, HAA, chlorite, and bromate. Exposure to these byproducts can possibly lead to cancer and therefore should be carefully limited,” says a spokesperson from Alfa Chemistry. “To reduce the levels of ...

The market demand for certified reference materials and standards has increased in the past decade. In order to make such chemicals easily obtainable for researchers, Alfa Chemistry recently announced to offer a wide range of pharmaceuticals, illicit drugs & alcohol standards that can be used in the analytical testing of many pharmaceuticals and illicit drugs.   “While conducting research on pharmaceuticals, diagnostic biomarkers, and illicit drugs that are of abuse, researchers may need a series of reference materials such as their standards, metabolites, impurities, and degradants in a wide variety of chromatographic and mass spectrometry-based testing scenarios,” says a spokesperson from Alfa Chemistry. The diverse pharmaceuticals, illicit drugs & alcohol standards can be widely applied for a string of purposes, to name just a few here: clinical toxicology testing, forensic analysis, pharmaceutical testing and research, clinical diagnostic testing, cannabis profilin...

After the launch of a series of household and apparel testing services, Alfa Chemistry Testing Lab recently releases footwear testing, providing comprehensive shoe product inspection solutions according to customer’s needs and in compliance with international and local regulations. With a professional analysis team and advanced instruments, the most accurate testing results can be obtained within the shortest timeframe possible. A wide range of footwear can be tested at Alfa Chemistry Testing Lab, including boots, shoes, sandals, indoor footwear, socks, sports footwear as well as footwear materials and components. “Despite there are many types of footwear, all need to be practical, comfortable and durable. This makes it necessary to conduct relevant research and testing on footwear so as to ensure its quality and safety,” says the Marketing Chief of Alfa Chemistry Testing Lab. In general, a complete footwear testing project should cover the following aspects: Chemical testing...

As a newly arising supplier of graphene-related products and solutions, Alfa Chemistry recently announces to start to provide mechanically exfoliated single crystal graphenes for customers worldwide. Mechanical exfoliation is a method universally used by manufacturers to achieve large-scale production of graphene . “ In the past two decades, mechanical exfoliation has been a unique enabler of the exploration of emergent 2D materials. Graphene is one type of these materials,” says a senior scientist from Alfa Chemistry. “ With mechanical exfoliation, high-quality two-dimensional graphene materials can be easily obtained and many of them can be typically used to create optoelectronic and electronic devices .   The mechanically exfoliated single crystal graphenes available at Alfa Chemistry include: Mechanically Exfoliated Single Crystal Graphene on SiO 2 /Si (SiO 2 : 300 nm thick) With SiO 2 /Si as the substrate and a graphene area exceeding 5000 µm 2 , Alfa Chemistry off...