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white crystalline powder
303.9 °C at 760 mmHg
H315 Causes skin irritation.
H319 Causes serious eye irritation.
H335 May cause respiratory irritation.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Prediction： 1H NMR (D2O): delta 8.6-8.7 (s, 1H), 8.3-8.4 (m, 1H), 7.92 (s, 1H) and 2.3 (s, 3H)