boric acid

Boric acid contains the elements boron, oxygen, and hydrogen (H3BO3). Boron is an essential micronutrient and is present in all foods, particularly fruits, vegetables, grains, and nuts. In fact, the average person eats between one to three milligrams each day as part of a normal healthy diet. Boron also occurs naturally in air, water, and soil. In nature, the element boron does not exist by itself. Boron is combined with other common elements, such as sodium to make salts like borax and with oxygen to make boric acid. Boric acid usage is on the increase. The National Center for Environmental Assessment (NCEA), a division of the U. S. Environmental Protection Agency (EPA), recently raised the daily allowable consumption limit for boron. The NCEA is responsible for assessing health risks associated with substances found in the environment and completed a multi-year assessment of more than 200 studies of boron’s health effects in August of 2004. The allowable daily dose of boron was more than doubled, increasing from 6.3 milligrams to 14.0 milligrams. For the three latest years the combine works at full capacity putting out about 110 thousand t of boric acid per year. Now the combined considers variants of start up of a laid up boric acid work shop. Consequently in 2007-2008 growth of manufacture volume up to 120-125 thousand t is possible.