Indigo carmine, C.I. 73015 USP, NF 25 g

Carminio d’indaco (C.I. 73015) IND, USP, NF
C16H8N2Na2O8S2
Carminio di indaco, indigotina
M.W: 466,36 CAS: 860-22-0 EC: 212-728-8 TARIC: 32041200
H: H317 P: P261;P272;P280;P302+P352;P333+P313;P501

Appearance ≥ Dark blue-violet powder having a metallic luster of copper
Absorption maximum in water (H2O) 608 – 612nm
Absorptivity (A1%; 1cm; λmax; 0.001% H2O) 380 – 475nm
Loss on drying (110 °C) ≤ 10%
Suitability (for microscopy) ≥ Passes test