Onye nrụpụta China bụ Sodium Thiosulphate Nnu Raw, Sodium Thiosulphate, nke a na-akpọkarị Hypo, bụ nnu sọlfọ dị mkpa nke na-adịghị n'ime ihe ndị a na-ere n'ahịa, nke nwere nkọwa azụmahịa abụọ a ma ama: sodium thiosulphate pentahydrate (CAS 10102-17-7) na sodium thiosulphate anhydrous (CAS 7772-98-7). Pentahydrate sodium thiosulphate na-apụta dị ka kristal monoclinic na-enweghị agba nwere ikuku kpọrọ nkụ, ebe sodium thiosulphate anhydrous bụ ntụ ntụ hygroscopic ọcha nke nwere ihe kemịkalụ kwụsiri ike na okpomọkụ ụlọ. Ngwaahịa abụọ a nwere ezigbo mmiri na-agbaze ma na-ebelata arụmọrụ ha, nke bụ isi ihe kemịkalụ ha.
Ụlọ ọrụ anyị na-achịkwa usoro nhicha mmepụta nke ọma iji hụ na ihe ngosi ịdị ọcha kwụsiri ike. Pentahydrate sodium thiosulphate na-ejide ọdịnaya kacha nta nke 99%, ụdị anhydrous na-erukwa ịdị ọcha nke nkeji 98.5%. Anyị na-emepụta ọkwa ọkọlọtọ abụọ: ọkwa foto na ọkwa ụlọ ọrụ izugbe, yana ọdịnaya ígwè dị arọ na adịghị ọcha nke dabara na ụkpụrụ mbupụ mba ụwa.