This standard specifies technical requirements, inspection methods, inspection rules and packing, marking, storage and transportation of CR3221, CR3222 and CR3223 of series CR3211, CR3212, CR3213 and CR322 in mixed modulation chloroprene rubber CR 321 series.
This standard is applicable to CR3211, CR3212, CR3213, CR3221, CR3222 and CR3223 made by polymerizing emulsion, with chloroprene as monomer and sulfur and dithiodiisopropyl xanthate as the moderator.