Borax is -
borax is boric acid derivative it causes nausea, vomiting (bluish green), haematemesis, diarrhoea (bluish green), epigastric pain. Ref: K.S.Narayan Reddy's Synopsis of Forensic Medicine and Toxicology, 29th edition, Chapter 25, page-293.
Gastrointestinal irritants
Genitourinary irritants
Ecbolics
Emmernagogues
Poisoning