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Electronic GradeTetramethylammonium Hydroxide 25%¡¢20%¡¢ 2.380% ( Developer TMAH ) C.A.S.No. 75-59-2 Freezing point, ¡æ <-25.0 Molecular formula (CH3)4NOH Viscosity 25 ¡æ,cst 2.8 Molecular weight 91.15 Density 1.022 Appearance Liquid Flash point ¨H >200 Boiling point, ¡æ 100.0 pH >13 Item Unit RJ-25 (MAX) RJ-20 (MAX) RJ-2.380 (MAX) Assay % 24.90¡«25.10 19.90¡«20.10 2.377¡«2.383 Color Hazen 5 5 5 CO32- ppm 100 100 10 Cl- ppm 0.1 0.1 0.1 CH3OH ppm 40 40 10 Li ppb 5 5 1 Na ppb 10 10 1 Mg ppb 5 5 1 Al ppb 10 10 1 K ppb 10 10 1 Ca ppb 10 10 1 Cr ppb 5 5 1 Mn ppb 5 5 1 Fe ppb 5 5 1 Ni ppb 5 5 1 Co ppb 5 5 1 Cu ppb 5 5 1 Zn ppb 5 5 1 Mo ppb 5 5 1 Cd ppb 5 5 1 Pb ppb 5 5 1 Ag ppb 5 5 1 Particle ¡Ý0.5um Ea/ml 100 100 100 Usage Widely used in electronic industry ,  especially as positive resister developer, silicon wafer wet etchant and super clean solution for CMP process. Storage Stored in sealed containers, placed in the shade Package 1000 kg IBC drum, tank car Transport Information Hazard classification: 8       UN 1835

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