. Author manuscript; available in PMC: 2018 Sep 18.

Published in final edited form as: Chemistry. 2017 Aug 16;23(52):12739–12743. doi: 10.1002/chem.201703457

Table 1.

Comparison of different formulations of hydrogen halide solutions

Entry	Formulation	Mole ratio (HX:solvent)	pK_BHX of stabilizer
1	HBr–water, 48 %^[a]	0.21	0.65
2	HBr–AcOH, 33 %^[a]	0.36	N/A
3	HBr–DMPU, 58 %	2.2	2.79

^[a]

Commercially available.