AsH3OS3·3Na is a chemical compound registered under CAS number 26273-99-4, with the molecular formula AsH3 O S3 . 3 Na and a molecular weight of about 259.1 g/mol. It is also known as Sodiumthioarsenate (Na3AsOS3) (6CI); Thioarsenic acid (H3AsOS3), trisodium salt (8CI). FireTardant supplies AsH3OS3·3Na for laboratory research and bulk production; product code 1120165. Send an inquiry for purity, packaging, price and lead time.