GB/T 14491-2015 Propylene oxide for industrial use

GB/T 14491-2001 Propylene oxide for industrial use

GB/T 14491-2025 Propylene oxide for industrial use

GB 190-1990 Labels for packages of dangerous goods GB 190-2009 Packing symbol of dangerous goods GB/T 601-2002 Chemical reagent Preparations of standard volumetric solutions GB/T 601-2016 Chemical reagent—Preparations of reference titration solutions GB/T 603-2002 Chemical reagent—Preparations of reagent solutions for use in test methods GB/T 603-2023 Chemical reagent—Preparations of reagent solutions for use in test methods GB/T 3143-1982 Color determination method of liquid chemicals (Hazen unit—platinum-cobalt scale) GB/T 3723-1999 Sampling of chemical products for industrial use—Safety in sampling GB/T 6283-1986 Chemical products—Determination of water—Karl fischer method (general method) GB/T 6283-2008 Chemical products—Determination of water Karl·fischer method(general method) GB/T 6324.6-1986 Organic chemical products for industrial use—Determination of content of carbonyl compounds present in small amounts—Photometric method GB/T 6324.6-2014 Test method of organic chemical products—Part 6:Determination of color for liquids—Tristimulus colorimetry 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 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 9722-2006 Chemical reagent—General rules for the gas chromatography 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 GB/T 9722-2023 Chemical reagent—General rules for the gas chromatography