4-(Dimethylamino)-azobenzene, for analysis, ExpertQ®

- Synonyms: Methyl yellow, Dimethyl yellow, Solvent yellow 2 - C14H15N3 - M = 225,30 g/mol - CAS [60-11-7] - EINECS-No.: 200-455-7 - Solub. in water: (20 ºC): almost insoluble - Melting point: 113 - 117 ºC - LD 50 (oral, rat): 200 mg/kg - ADR: 6.1 T2 III UN 2811 - IMDG: 6.1 III UN 2811 - IATA/ICAO: 6.1 III UN 2811 - GHS-signal word: Danger - GHS-H sentences: H301 - H351 - H317 - GHS-P sentences: P261 - P280 - P301+P310 - P321 - P405 - P501a - Tariff number: 2927 00 00 90 - Applications: indicator, analytical chemistry. - Appearance: Orange-orange brown powder SPECIFICATIONS identity (IR-spectrum): passes test pH range (red to yellow): 3,0 - 4,0 Absorption max l1 (buffer pH 3,0) : 508 - 511 nm Absorption max l2 (buffer pH 4,0) : 455 - 460 nm Absorption max l3 (ethanol) : 403 - 407 nm ethanol, on dried sample): 1100 - 1300 loss on drying (105 ºC): max. 5 %