This standard specifies the requirements, sampling, test methods, inspection rules, signs, labels, packaging, transportation and storage of optical brightener 220 (CI optical brightener 220) products. This standard applies to product quality control of optical brightener 220. Molecular formula: CHNNaOS Relative molecular mass: 1165.04 (according to the 2013 international relative atomic mass) CAS RN: 16470-24-9
HG/T 3727-2017 Referenced Document
GB 19601 Limit and determination of 23 harmful aromatic amines in dye products
GB 20814 Limit and determination of the quantity of heavy-metal elements in dye products
GB/T 21882 Liquid dyes.Determination of the viscosity
GB/T 2381-2013 Dyestuffs and intermediate of dyestuffs.Determination of content of insoluble matters
GB/T 2386-2014 Dyestuffs and intermediate of dyes.Determination of moisture content
GB/T 23979.1-2009 Fluorescent whitening agents.Determination of relative whiteness and shade.Dyeing method for cotton fabric
GB/T 23979.2-2009 Fluorescent whitening agents.Determination of relative whiteness and shade.Dyeing method for paper
GB/T 24101 Limit and determination of 4-aminoazobenzene in dye products*， 2018-12-28 Update
GB/T 6678-2003 General principles for sampling chemical products
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values