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Parameters
| Properties | |
| Properties | 【外观性状】有光泽的紫色结晶或红棕色粉末。熔点180-182℃。易溶于乙醇、冰醋酸，几乎不溶于水。【熔点 】178-182°C【密度 】0.839 g/mL at 25 °C【闪点 】11 °C【储存条件 】−20°C【溶解度 】ethanol: soluble1mg/mL【色指数 】13020【酸度系数(pKa)】4.95(at 25℃)【形态】Solid【颜色】Reddish-violet【酸碱指示剂变色ph值范围】4.4(red)-6.3(yellow)【水溶解性 】Practically insoluble in water. Soluble in alcohol, acetic acidSoluble in ethanol. Insoluble in water.【最大波长(λmax)】410nm, 530nm, 427nm, 519nm【Merck 】14,6119【BRN 】750102【稳定性】Stable. Incompatible with strong oxidizing agents.【主要应用】Waveguides, LED sensors, photoresists, liquid crystals, sol-gel matrix, optical sensors, paints, toys, detection of thiols, food freshness sensors, dental product, saliva sampling method, detecting lactic acid, carbohydrates【NIST化学物质信息】Benzoic acid, 2-[[4-(dimethylamino)phenyl]azo]-(493-52-7)【EPA化学物质信息】Benzoic acid, 2-[[4-(dimethylamino)phenyl] azo]-(493-52-7) |
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| Specification And Standard | |
| Production And Usage | |
| Biological properties | |原生动物活体染色，酸碱指示剂 (pH 4.4 to 6.2) ，临床血清蛋白生化检验。pH变色范围4.4(红)-6.2(黄)。滴定氨、弱有机碱和生物碱，但不适用于除草酸和苦味酸以外的有机酸。可与溴甲酚绿和亚甲基蓝组成混合指示剂以缩短变色域和提高变色的敏锐性。沉淀滴定的吸附指示剂，如用硝酸钍滴定氟离子。检定游离氯、亚氯酸盐等氧化剂^ |
| Packing And Storage | |
| Safety | |
| Spectrum And References | |
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| Update | 2018-11-22wf |
