This standard specifies the quality requirements, test methods, inspection rules, marking, packaging, transportation and storage of polyurethane chain extender HER [resorcinol-bis(β-hydroxyethyl) ether]. This standard applies to polyurethane chain extender HER made from the condensation of resorcinol and ethylene oxide. Molecular formula: CHO Structural formula: Relative molecular mass: 198.22 (according to the 2007 international relative atomic mass) CAS RN: 102-40-9
HG/T 4229-2011 Referenced Document
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