Hóa chất Eriochrome black T (C.I. 14645) indicator for complexometry ACS,Reag. Ph Eur Merck 1031700100 (C₂₀H₁₂N₃NaO₇S, Chai thủy tinh 100g) DEEP52 https://yeuhangduc.vn/

CAS number: 1787-61-7

EC number: 217-250-3

Grade: ACS,Reag. Ph Eur

Hill Formula: C₂₀H₁₂N₃NaO₇S

Molar Mass: 461.38 g/mol

Identity (UV/VIS-Spectrum): passes test

Appearance: Black to dark brown-black fine powder, eventually with granular parts

Clarity of solution: passes test

Absorption maximum λmax. (buffer pH 10.0): 612 - 616 nm

Spec. Absorptivity A 1%/1cm (λmax; 0.02 g/l; buffer pH 10.0; calc. on dried substance): 400 - 510

Loss on drying (110 °C): ≤ 7 %

Suitability as indicator (for complexometric titration, ACS): passes test

Suitability as indicator (Reag. Ph Eur): passes test