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When we eat nitrates, they are converted into nitrites in our digestive system, which are then converted to ammonia and disposed of by the body. Nitrites are also inorganic compounds made up of nitrogen and oxygen, but instead of three oxygen molecules they have two, NO2. Nitrates are not generally harmful unless they are consumed in massive quantities. Nitrites, on their own and in moderation, are also generally not harmful.
What is UAN 32% Solution? UAN 32% Solution is a nitrogen fertilizer solution composed of urea and ammonium nitrate. Approximately one-half of the N is from urea, and one-half is from ammonium nitrate. Nitrogen is available in three forms in UAN 32% Solution--ammonic, nitrate and urea.