colorless crystalline substance in the form of flakes with no odor.
| Mass fraction of boric acid (H3BO3),%, not less | 99,9 |
| Mass fraction of chloride (Cl-),%, not more | 0,001 |
| Sulfate (SO42-),%, not more | 0,008 |
| Mass fraction of iron (Fe2 +),%, not more | 0,0005 |
Boric acid has the same name orthoboric acid.
Dangerous if large amounts (more than 4 grams) enter the human body - can lead to death.
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in nuclear reactors as a fertilizer, in medicine as a disinfectant, in photographs, to control cockroaches in the food industry as food additive E284 (in Russia this additive is not included in the list are allowed to use).
Technical boric acid grade B is a crystalline product with the formula H₃BO₃, produced under GOST 18704-78. Grade B indicates specific batch quality requirements: mass fraction of the main substance, content of chlorides, sulfates, iron and other regulated indicators. When purchasing for an enterprise, it is important to check not only the name but also the quality certificate, packaging, production date and actual analysis results, so that the batch matches the internal specification.
Boric acid grade B differs from other grades in purity requirements, intended use and permissible impurities according to the standard. Grades A, B, C and special variants can have different indicators for the main substance, moisture, impurities and stability of behaviour in the process. Substituting a grade without agreement from the process engineer can lead to deviations in the formulation.
Technical boric acid grade B is stored in a dry, unheated warehouse, in sealed factory packaging and protected from moisture. If it gets wet, the crystals can cake, become contaminated and harder to dose when preparing solutions or dry mixtures. Packages are placed on pallets, separately from substances that could affect batch purity. For a wholesale buyer, preserved labelling, quality certificate, production date and observance of the guaranteed shelf life are important.
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