GB/T 11199-2024 High-purity sodium hydroxide

GB/T 11199-2006 High-purity sodium hydroxide

GB/T 209-2018 Sodium hydroxide for industrial use GB/T 31197-2014 Inorganic chemicals for industrial use—Determination of impurity anions—Ion chromatography method GB 190-1990 Labels for packages of dangerous goods GB 190-2009 Packing symbol of dangerous goods GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 4348.1-2000 Sodium hydroxide for industrial use—Determination of sodium hydroxide and sodium carbonate content GB/T 4348.1-2013 Sodium hydroxide for industrial use—Determination of sodium hydroxide and sodium carbonate content GB/T 4348.3-2002 Sodium hydroxide for industrial use—Determination of iron content-1,10—Phenanthroline photometric method GB/T 4348.3-2012 Sodium hydroxide for industrial use—Determination of iron content—1,10-phenanthroline photometric method GB/T 6678-2003 General principles for sampling chemical products GB/T 6679-2003 General rules for sampling solid chemical products GB/T 6680-2003 General rules for sampling liquid chemical products GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB/T 7698-2003 Sodium hydroxide for industrial use—Determination of carbonates content—Titrimetric method GB/T 7698-2014 Sodium hydroxide for industrial use—Determination of carbonates content—Titrimetric method GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 11200.1-2006 Sodium hydroxide for industrial use—Determination of sodium chlorate content—o-Tolidine spectrometric method GB/T 11200.2-2008 Test methods of high-purity sodium hydroxide—Part 2:Determination of aluminium oxide content—Spectrometric method GB/T 11200.3-2008 Test methods of high-purity sodium hydroxide—Part 3:Determination of calcinm contents—Flame atomic absorption method GB/T 11213.1-1989 Sodium hydroxide for chemical fiber—Determination method of mass fraction GB/T 11213.1-2007 Sodium hydroxide for chemical fiber use—Determination of sodium hydroxide content GB/T 11213.2-1989 Sodium hydroxide for chemical fiber use—Determination of sodium chloride content—Spectrometric method GB/T 11213.2-2007 Sodium hydroxide for chemical fiber use—Determination of sodium chloride content—Spectrometric method GB/T 11213.4-2006 Sodium hydroxide for chemical fiber use—Determination of silicon content—Reduced molybdosilicate spectrophotometric method GB/T 11213.5-2006 Sodium hydroxide for chemical fiber use—Determination of sulphate content GB 15258-1999 General rules for preparation of precautionary label for industrial chemicals GB 15258-2009 General rules for preparation of precautionary label for chemicals HG/T 3942-2007 Sodium hydroxide for industrial use-Determination of metal and nonmetal ions content-ICP method GB/T 11200.1-2025 Test methods of high-purity sodium hydroxide—Part 1:Determination of sodium chlorate content GB/T 191-2025 Graphical symbols marking for handling and storage of packages GB/T 4348.1-2026 Component determination of sodium hydroxide for industrial use—Part 1:Sodium hydroxide and sodium carbonate