GB/T 4553-2016
Sodium nitrate for industrial use
GB/T 2367-2016
Sodium nitrite for industrial use
GB/T 636-2011
Chemical reagent - Sodium nitrate
GB/T 633-1994
Chemical reagent--Sodium nitrite
GB 1886.5-2015
GB/T 4553-2002
Sodium nitrate for industrial use
GB 1886.11-2016
GB 2367-2006
Sodium nitrite for industrial use
GB/T 4553-1993
Sodium nitrale for industrial use
GB 1891-2007
Food additive—Sodium nitrate
GB/T 636-1992
Chemical reagent--Sodium nitrate
GB 1891-1996
Food additive—Sodium nitrate
GB 1907-2003
Food additive—Sodium nitrite
KS M 1305-2021
Sodium nitrate
GB 2367-1990
Sodium nitrite for industrial use
KS M 1305-2016
Sodium nitrate
KS M 8304-2015(2020)
Sodium nitrite
GB 1907-1992
Food additive--Sodium nitrite
T/ZZB 1629-2020
GB/T 223.58-1987
Methods for chemical analysis of iron,steel and alloy--The extraction-absorption catalytic polarographic method for the determination of manganese content