5. teratogenicity [19] pregnant rats administered within 7 ~ 9d were poisoning the lowest dose (TDLo) 30mg / kg, caused by central nervous system, the genitourinary system, musculoskeletal system malformations. 6. carcinogenic [20] IARC carcinogens comments: G2B, suspected human carcinogen. 7. Other [21] Rats were poisoning the lowest dose (TDLo): 50mg / kg (progesterone 6 ~ 16d after treatment) linking oxygen medicine pesticides, embryo toxicity. Mice were poisoning the lowest dose (TDLo): 48mg / kg (after pregnancy 6 ~ 9d medication) oxygen-linked prices, embryo toxicity, musculoskeletal system affected. 9 computational chemistry data hydrazine: forming a coordination bond N atoms form a single substance or compound linked oxygen, often retain lone couplet oxygen precious metal cleaning refined, so this single substance or compound can be used as electron donor to the metal ion ligands. Such as [Cu (NH?)?] 2+. There are nine nitrogen oxide: Nitrous oxide (? N O), nitric oxide (NO), nitric oxide dimer (?? N O), nitrogen dioxide (NO?), Dinitrogen trioxide ( N? O?), dinitrogen tetroxide (N? O?), dinitrogen pentoxide (N? O?), nitrosyl azide (N? O), nitrogen oxides ninth nitrogen trioxide (NO?) exists as an unstable intermediate in the reaction among many. United oxygen organic pigments _ Connaught Chemical (certified) _ United oxygen provided by the Qingdao-Connaught Chemical Co. Qingdao-Connaught Chemical Co., Ltd. (www.qdweinuo.com) is in Qingdao, Shandong, chemical products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Connaught Chemical leadership with the staff warmly welcome all inquiries negotiations to create Connaught chemical better future.