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formula : HBO2 MW : 43.82 three Crystal : variant III osteoporosis white powder oblique side Crystal. The relative density of 1.78, and the melting point of 176 degrees. Variant II monoclinic crystal. The relative density of 2.04, 200.9 ° C melting point. I variant of the three variants is the most stable one, a white cube crystal, the relative density of 2.486, the melting point of 236 ° C. The three variants are soluble in water into boric acid, boric acid burn when the partial formation of boron oxide. Boric acid to flow in dry air or 80-140 ° C in the air in the system and dehydration.
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