Description
SPECIFICATIONS
CAS 100743-65-5
Name: 4-(3,5-dibromo-2-pyridylazo)-N-ethyl-N-sulfopropylaniline monosodium
salt,monohydrate
Appearance: Dark reddish brown or black purple brown powder
Molecular weight: 546.21
Molecular formula: C16H17Br2N4NaO3S.H2O
Solubility in water: To pass test (clear, red)
Molar absorptivity: > 32 000 (around 503 nm)
Molar absorptivity (Cu chelate): > 124 000 (637 nm)
IR spectrum: Authentic
Storage: Store in a cool and dry place. Keep tightly closed. Protect from
metal.
Stability: At least 1 year at 2 – 8 °C.