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| CAS号 : | 99-11-6 |
精确质量 : | 155.02200 |
| 分子式 : | C6H5NO4 |
logP : | 0.19100 |
| 分子量 : | 155.10800 |
PSA : | 90.65000 |
柠嗪酸 | |
Citrazinic acid | |
99-11-6 | |
C6H5NO4 | |
155.10800 | |
90.65000 | |
0.19100 | |
155.02200 |
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米色略棕色粉末
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Stable under normal temperatures and pressures.
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180.9ºC
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Store in a cool, dry place. Keep container closed when not in use.
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>300 °C(lit.)
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1.708 g/cm3
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practically insoluble
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375.5ºC at 760 mmHg
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29333999
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1
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R36/37/38
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S26-S36-S36/37/39-S22
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NS1400000
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Xi
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HS:29333999.Oter compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. General tariff:6.5% |
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由柠檬酸经酯化、氨解、闭环而得。酯化反应在硫酸存在下进行,经48h脱水后,回收溶剂和乙醇,残留物经水洗、碱洗、水洗至pH为6,得柠檬酸三乙酯粗品。加入氨水,通氨至饱和。放置以后,再通氨饱和,每天饱和一次,共三次,滤出结晶,将所得柠檬酸三甲酸胺于硫酸存在下120℃左右保温3h,慢慢倒入蒸馏水中,得粗品,再用酸碱精制而得柠嗪酸。采用柠檬酸三甲酯的制备方法大致与上述过程相同。在柠檬酸三甲酯中加入氨水,于室温放置约48h,浓缩后,加75%硫酸,放置12h,于130℃加热10min,用水稀释,过滤沉淀物即得粗品。将粗品溶于氨水,加盐酸即得沉淀,过滤,水洗,干燥。收率为69%。 | |
用于药物、染料和彩色胶片成色剂的合成。 |
