FIELD: chemistry.
SUBSTANCE: etching solution contains HF, H2SO4, glycerine and K2Cr2O7, with the following ratios of components, in wt %: HF - 55.0 - 65.0; H2SO4 - 27.0-32.0; glycerine -2.0-3.0; K2Cr2O7 - 5.0-10.0.
EFFECT: faster etching of glass.
1 tbl
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|
RU2367628C1 |
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RU2332381C1 |
