ALIZARIN RED S MONO SODIUMSALT, 25 GR, MERCK, 106278

ALIZARIN RED S MONO SODIUMSALT (C.I. 58005) FOR ANALYSIS AND INDICATOR 25 GR # HARAP MENANYAKAN STOCK TERLEBIH DAHULU # Description Brand : MERCKMILLIPORE made in Germany Catalogue Number 106278 Packing : 25 GR (glass Bottle) Product Information CAS number 130-22-3 EC number 204-981-8 Hill Formula C₁₄H₇NaO₇S Molar Mass 342.26 g/mol HS Code 3204 12 00 Specifications Identity (UV/VIS-Spectrum) passes test 1st transition range pH 4.3 - pH 6.3 Lightly yellow - pink 2nd transition range pH 9.4 - pH 12.0 Brown orange - violet Absorption maximum λ 1 (buffer pH 4.3) 418 - 424 nm Absorption maximum λ 2 (buffer pH 6.3) 510 - 517 nm Absorption maximum λ 3 (buffer pH 9.4) 444 - 450 nm Absorption maximum λ 4 (buffer pH 12.0) 554 - 558 nm Spec. Absorptivity A 1%/1cm (λ1max; 0.01 g/l; buffer pH 4.3; calc. on dried substance) 135 - 180 Spec. Absorptivity A 1%/1cm (λ2max; 0.01 g/l; buffer pH 6.3; calc. on dried substance) 145 - 210 Spec. Absorptivity A 1%/1cm (λ3max; 0.01 g/l; buffer pH 9.4; calc. on dried substance) 170 - 230 Spec. Absorptivity A 1%/1cm (λ4max; 0.01 g/l; buffer pH 12.0; calc. on dried substance) 340 - 520 Loss on drying (110 °C) ≤ 10 %