Phosphorus acid

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  • Phosphorus acid is formed in a following treatment with steam.
  • 5 -- or ##STR1## and alkyl derivatives of the latter two cyclic structures and the phosphorus acid is generally any acidic compound with phosphorus in the +5 valence state.
  • Phosphorus acid is water soluble and has a high boiling point, so it can therefore be separated from the brominated indole product by means of an acid-base extraction or by simple distillation after basification.
  • Return to top Q: Is phosphorous acid (phosphite) available to the plant as a plant nutrient? If so, is it comparable to phosphoric acid (phosphate) in availability and crop response? The Expert: Phosphorus acid is not available to the plant as a nutrient.
  • ~>Chalcogen or additional nitrogen in the organic nitrogen compound DEFINITION Classification: 44/380 Organic nitrogen compound salt of organic phosphorus acids: (under subclass 375) Compositions wherein an organic phosphorus acid is salified with an organic nitrogen compound.

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