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Trihalomethanes were the subject of the first drinking water regulations issued after passage of the U.S. Safe Drinking Water Act in 1974. [ 5 ] The EPA limits the total concentration of the four chief constituents ( chloroform , bromoform , bromodichloromethane , and dibromochloromethane ), referred to as total trihalomethanes (TTHM), to 80 ...
Swimming pools using chlorine have been found to contain trihalomethanes, although generally they are below current EU standard for drinking water (100 micrograms per litre). [4] Concentrations of trihalomethanes (mainly chloroform) of up to 0.43 ppm have been measured. [5]
The chloroform molecule can be viewed as a methane molecule with three hydrogen atoms replaced with three chlorine atoms, leaving a single hydrogen atom. The name "chloroform" is a portmanteau of terchloride (tertiary chloride, a trichloride) and formyle, an obsolete name for the methylylidene radical (CH) derived from formic acid. [citation ...
Dibromochloromethane was formerly used as a flame retardant and as an intermediate in chemicals manufacturing. Today it is used only as a laboratory reagent.
Unfortunately, the antitoxin can’t correct existing nerve damage, and long-term effects could persist for months, Madan tells USA TODAY. Luckily, ...
Halon 1301 causes only slight giddiness at its effective concentration of 5%, and even at 15% those exposed remain conscious but impaired and suffer no long-term effects. (Experimental animals have also been exposed to 2% concentrations of Halon 1301 for 30 hours per week for 4 months, with no discernible health effects.
Anti-Graying Effects of External and Internal Treatments with Luteolin on Hair in Model Mice. Antioxidants . Flavonoids as anticancer agents: structure-activity relationship study.
Health Risks of Unsafe, Unapproved Enhancement Pills. Unscrupulous business practices are so commonplace in the non-prescription male enhancement pill racket that the FDA actually maintains a list ...