Word: urea
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Dates: during 1970-1979
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...system under stress, however, solutions sometimes create problems. Massachusetts has become the first state in the nation to ban urea formaldehyde foam, the largest selling type of blown insulation. Public Health Commissioner Alfred Frechette says that "we find there is significant correlation between the foam insulation and such formaldehyde-linked illnesses as respiratory difficulties, eye and skin irritations, headaches, vomiting and severe irritation to the mucous membranes." Massachusetts estimates that some 7,000 houses in the state?and many more across the country?are insulated with formaldehyde. The cost of removing the stuff, where it can be removed, might...
...cosmetics companies list the ingredients of each product on the package. But the consumer does not understand what many of those chemical names mean. Surely most buyers would be hard put to know after the longest head-scratching what might be the purpose of compounds like triethanolamine and imidazolidinyl urea, which are found in many cosmetics. One of them, for example, is Alexandra de Markoff s Countess Isserlyn Creme; it is a high quality makeup, commonly known as a foundation, that costs $25 for a 2-oz. jar. There are a few makeup creams that cost more and many that...
...other ingredients to mix and form a smooth lotion. Three of the ingredients are pigments, which give color to the skin when the cream goes on. They are titanium dioxide, iron oxides and talc. There are also three preservatives to lengthen the shelf life of the cream: methylparaben, imidazolidinyl urea and propylparaben. In fact, the most expensive ingredient is propylparaben, which sells for about $3.30 per lb. But a safe assumption is that scarcely 20 worth ever finds its way into...
...perhaps 2 million people around the world, had to be directed at stopping the characteristic sickling, or distortion, of the red blood cells that occurs after they unload their cargo of oxygen. But how? During cocktail-party chatter, Lab Director Cerami learned from a colleague that a byproduct of urea-a chemical called cyanate-can prevent sickling. Tests on both animals and humans confirmed this, but the cyanate also had toxic side effects on the nervous system. So the Rockefeller scientists suggested adding the cyanate directly to the blood. That idea has led to the experimental development elsewhere of machines...
...Going to the source of the problem, Rosenberg and Gutnick last winter boarded a 125,000-ton tanker to give RAG1 a practical test. Selecting two of the ship's tanks, which were each filled with 100 tons of sea water, they poured 55 lbs. of nitrogen-containing urea and 2.2 lbs. of potassium phosphates into each. Shipboard compressors were used to bubble air into the tanks through a perforated hose, thus turning them into ideal "bacterial fermenters," says Rosenberg. Then a flaskful of RAG1 bacteria was poured into one tank. Six and a half days later, the tanker...