GB/T 11212-2003 Sodium hydroxide for chemical fiber use

GB 11212-1989

GB/T 11212-2013 Sodium hydroxide for chemical fiber use

GB/T 11213.6 GB/T 15915-1995 Paking containers—Caustic alkali steel drum 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 1250-1989 Rules for expression and judgement of limiting values 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 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 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 11213.3-2003 Sodium hydroxide for chemical fiber use—Determination of the calcium content—EDTA complex metric 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/T 11213.7-1989 Sodium hydroxido for chemical fiber use—Determination of copper mass fraction—Spectrometric method GB/T 11213.7-2008 Test methods of sodium hydroxide for chemical fiber use—Part 7:Determination of copper content—Spectrometric method 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