- C20H19ClN4 - M = 350,88 g/mol - CAS [477-73-6] - EINECS-No.: 207-518-8 - Solub. in water: (20 ºC): 50 g/l - GHS-signal word: Warning - GHS-H sentences: H319 - GHS-P sentences: P280 - P264 - P305+P351+P338 - P337+P313 - Tariff number: 3204 13 00 90 - Applications: microscopy, manufacture of dyes. SPECIFICATIONS Absorption maximum l (in ethanol 50 %): 530 - 534 nm Absorptivity (A1%/1 cm; l max.): 875 - 1450 loss on drying (110 ºC): max. 15 %