Hóa chất Bromocresol green Merck 1081210025 (C₂₁H₁₄Br₄O₅S, chai thủy tinh 25g) DEEP52 https://yeuhangduc.vn/
Mô tả
CAS #: 76-60-8
EC number: 200-972-8
Hill Formula: C₂₁H₁₄Br₄O₅S
Molar Mass: 698.04 g/mol
Identity (UV/VIS-Spectrum): passes test
Clarity of solution (1 g/l; ethanol): passes test
Transition range: pH 3.8 - pH 5.4 yellowish green - blue
Absorptions maximum λ 1 max. (buffer pH 3.8): 438 - 445 nm
Absorptions maximum λ 2 max. (buffer pH 5.4): 615 - 618 nm
Spec. Absorptivity A 1%/1cm (λ 1 max.; 0.01 g/l; buffer pH 3.8; calc. on dried substances): 220 - 280
Spec. Absorptivity A 1%/1cm (λ 2 max.; 0.01 g/l; buffer pH 5.4; calc. on dried substances): 460 - 590
Loss on drying (110 °C): ≤ 3 %
Transition range (according to ACS): passes test
Transition interval (according Reag. Ph Eur): pH 3.6 - pH 5.2 yellow - blue
Sensitivity test: passes test
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