Klason lignin content in wood was determined according to Runkel and Wilke (21) using 72 percent sulfuric acid and 40 percent
hydrobromic acid.
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Hydrobromic acid (40%, 20.0 ml, 0.10 mol) was added into the mixture and refluxed at 120[degrees]C for 72 h.
This study aims at exploring the transport properties of hydrochloric acid and
hydrobromic acid in a dipolar fluoropolymer, poly(ethylene-co-chlorotrifluoroethylene) (ECTFE) (two grades), and a hydrogen bonding fluoropolymer, poly(vinylidene fluoride) PVDF (four grades) (Table 1).
The typically used mineral acids are sulfuric acid [30-33, 37, 38, 40-43, 56, 57], hydrochloric acid [58, 59], phosphoric acid [35, 60],
hydrobromic acid [61], and their mixed acids [34, 36].
hydrochloride (0.5 g, 1.49 mmol) was dissolved in aqueous
hydrobromicHalogens in the exhaust gas, in combination with water vapour, yield hydrochloric acid,
hydrobromic acid or hydrofluoric acid.
Accordingly, iterative use of commercially available vinylmagnesium bromide (2), 47%
hydrobromic acid, and methyl acetoacetate (3) enables us to prepare 1 from all commercially available 2-hexanone (4, Fig.