-Grounds 7)Suspected of causing cancer.① With LASC group 2A it classified carcinogenesis as a indium phosphide.The carcinogenicity of the indium compound except indium phosphide is unidentified, but it is thought that the carcinogenicity is caused by indium.②The bronchoalveolar carcinoma and the bronchiole adenoma - it could recognize the occurrence increase of the alveolus epithelium adenoma in the lung with theLong-term carcinogenicity test results of the Japanese bioassay research center 104 weeks, 0.01 and 0.03, in 0.01mg/m3 of the result and the lowest cardinality which make the ITO grinding powder disclose at 0.1mg/m3 cardinality in rat of the male and female, furthermore with the male, in the lung adenosquamous carcinoma, with the female also adenosquamous carcinoma andsquamous cell carcinoma were recognized in the lung.Furthermore, 104 weekly ITO grinding powder was made to disclose to also the mouse, at similar cardinality, but carcinogenesis was not recognized.③GHS classification: Category 1B.There is no information on human carcinogenicity.In experimental animals, in a carcinogenicity test in which indium tin oxide (ITO) containing 90.06% of indium oxide and 9.74% of tin oxide was inhaled in rats or mice at concentrations of 0.01 to 0.1 mg / m 3 for 2 years(26 weeks due to pulmonary injury only in rat high concentration group), Although neoplastic changes were not observed, the incidence of pulmonary tumors such as bronchioles / alveolar epithelial adenoma of the lung and bronchiole / alveolar epithelial carcinoma increased in males and females in rats(Reason for proposal of acceptable concentration of Japan Industrial HealthAssociation(2013), The Ministry of the Environment RiskAssessment Vol. 11 (2013)).As an existing classification, Japan Industrial Hygiene Society has classified it as 2A for sparingly soluble inorganic indium compounds (Japan Industrial Hygienology AssociationRecommendation(2015)). Therefore, this section is classified as Category 1B.