HG/T 6251-2023
32013R0469
YB/T 5070-2014
α-methyl pyridine
GB/T 27715-2011
3-methylpyridine for industrial use
YB/T 5071-2015
β-methyl pyridine fraction
HG/T 4482-2012
HG/T 4483-2012
HG/T 5712-2020
HG/T 6145-2023
HG/T 5615-2019
HG/T 6340-2024
HG/T 5502-2018
N -Methyl-4- (p -formylstyryl) pyridiniuID methyl sulfate
YB/T 5071-2005
β-Picoline fraction
32018R0247
GB/T 33089-2016
Chemical reagent—N,N-dimethyl-p-phenylenediamine dihydrochloride
HG/T 4711-2014
NY/T 3037-2016
DB42/T 1720-2021
GB/T 33317-2016
Plastics—Phenolic resins—Determination of hexamethylenetetramine content—Kjeldahl method,perchloric acid method and hydrochloric acid method
GB/T 1678-1981
Determination of the epoxy value of plasticizers (pyridine-hydrochloride method)