Many lipsticks and glosses contained nickel, cobalt, cadmium, and chromium, all known carcinogens. These ingredients are why manufacturers would add them to their products. They don’t. They are known as ‘impurities’ in products, which are found in other ingredients like oils, waxes, or miner...
Scientists and goldsmiths often use colors to designate the various gold alloys that are possible. For example, white gold is made by combining gold with nickel, silver or palladium. Red or pink gold is an alloy of gold and copper. And blue gold is the result of mixing gold with iron. ...
Shape-memory alloys (SMA), such as nickel-titanium alloy, "remember" their original shape and return to it when heated. They are primarily used in cardiovascular stents. Benefits include:Minimal invasiveness: SMAs can be compressed and inserted through small incisions, expanding to their original ...
More resistant chromium-nickel grades can be passivated in a 20% by vol. nitric acid bath (Fig. 2). As indicated in the same table, less resistant stainless grades can be passivated by adding sodium dichromate to the nitric acid bath to make the solution more oxidizing and capable of formi...
he set up reactions between phenylacetylene and an azide in an alcohol/water mixture, adding different metal catalysts – iron, zinc, nickel, silver and copper. At 7pm, a few hours after starting the experiments, he wrote excitedly in his lab notebook ‘The copper reaction looksgoodby TLC!
"EPNS" marked on cutlery is a definitive sign of plating: it stands for electroplated nickel silver.Sponsored links How does electroplating work?First, you have to choose the right electrodes and electrolyte by figuring out the chemical reaction or reactions you want to happen when the electric ...
Again, it's the porous structure of zeolites that proves important. The many pores in a zeolite's open structure are like millions of tiny test tubes where atoms and molecules become trapped and chemical reactions readily take place. Since the pores in a particular zeolite are of a fixed ...
Less desirable metals:Monel, one of the most common frame metals, is strong and durable, but it can trigger reactions in people allergic to nickel. Cobalt is lightweight, durable and flexible, but it’s also quite expensive. Aluminum frames are lightweight and attractive, but they’re also ...
Nickel-cadmium Nickel-cadmium (NiCd, pronounced "nicad") are widely used as replacements for disposable 1.5-volt batteries in things like toys, flashlights, and power tools. They're relatively cheap, can be charged and discharged hundreds of times, and, properly treated, will last about a deca...
For this study, they looked at reactions involving transition metal catalysts in nanoparticle form, which include elements like platinum, palladium, rhodium, copper, nickel, and others important in industry and green energy. According to the current rigid-surface model of catalysis, the tightly ...