GB/T 3915-2021 Styrene for industrial use

GB/T 3915-2011 Styrene for industrial use

GB/T 605-1988 Chemical reagent—General method for the measurement of colour(in Hazen units) GB/T 605-2006 Chemical reagent—General method for the measurement of colour 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 6324.8-2014 Test methods of organic chemical products—Part 8:Determination of water of liquid products—Carl·fischer coulometric method GB/T 6678-2003 General principles for sampling chemical products GB/T 6680-2003 General rules for sampling liquid chemical products 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 12688.1-1998 Styrene for industrial use—Determination of purity—Capillary gas chromatography GB/T 12688.1-2011 Test method of styrene for industrial use—Part 1:Determination of purity and hydrocarbon impurities—Gas chromatography GB/T 12688.1-2019 Test method of styrene for industrial use—Part 1:Determination of purity and hydrocarbon impurities—Gas chromatography GB/T 12688.3-1990 Styrene for industrial use—Determination of content of polymer—Photometric method GB/T 12688.3-2011 Test method of styrene for industrial use—Part 3:Determination of content of polymer GB/T 12688.4-1990 Styrene for industrial use—Determination of content of peroxides—Titrimetric method GB/T 12688.4-2011 Test method of styrene for industrial use—Part 4:Determination of content of peroxides—Titrimetric method GB/T 12688.5-1990 Styrene for industrial use—Determination of content of total aldehydes—Titrimetric method GB/T 12688.5-2011 Test method of styrene for industrial use—Part 5:Determination of content of total aldehydes—Titrimetric method GB/T 12688.5-2019 Test method of styrene for industrial use—Part 5:Determination of the content of total aldehydes—Titrimetric method GB/T 12688.8-1998 Styrene for industrial use—Determination of content of inhibitor(p-tert-butylcatechol)—Spectrophotometric method GB/T 12688.8-2011 Test method of styrene for industrial use—Part 8:Determination of content of inhibitor(p-tert-butylcatechol)—Spectrophotometric method GB/T 12688.9-2011 Test method of styrene for industrial use—Part 9:Determination of trace benzene—Gas chromatographic method GB/T 12688.10-2020 Test method of styrene for industrial use—Part 10:Determination of oxygenates—Gas chromatography SH/T 1147-2008 Determination of trace sulfur in industrial aromatic hydrocarbons by micro-coulometry SH/T 1820-2018 Industrial aromatic hydrocarbons determination of trace sulfur using UV fluorescence method SH/T 1147-1992 Determination of trace sulfur in industrial benzene by micro-coulometric method SH/T 1147-2025 Determination of trace fluorine, chlorine, and sulfur in industrial aromatic hydrocarbons