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| CAS号 : | 127-68-4 |
精确质量 : | 224.97100 |
| 分子式 : | C6H4NNaO5S |
logP : | 2.10290 |
| 分子量 : | 225.15400 |
PSA : | 111.40000 |
3-硝基苯磺酸钠 | |
Sodium 3-nitrobenzenesulphonate | |
127-68-4 | |
C6H4NNaO5S | |
225.15400 | |
111.40000 | |
2.10290 | |
224.97100 |
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灰白色至黄色粉末
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100 °C
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215 - 219ºC
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350 °C
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1.637g/cm3
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200 g/L (20 ºC)
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Stable. Hygroscopic. Incompatible with strong oxidizing agents.
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Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.
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DB7195000
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1
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S24-S26-S37
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2904209090
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Xi
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R36; R43
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2933990090
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2933990090. 其他仅含氮杂原子的杂环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0% | |
2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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<p>在搪瓷釜中,先加入350份发烟硫酸,控制釜温0～5℃,在搅拌下缓缓加入硝基苯,在1h内加守132份硝基苯后使釜温升至100℃,保温2h。取样测磺化终点(将1～2滴物料滴入10ml盛有清水的试管中,无浑浊证明到终点)。磺化反应完成后,冷却,缓缓加入冰水中,并在3h左右加入<br>2 000份食盐,盐析数小时后,静置过夜,吸滤,压干,得中间体间硝基苯磺酸。将间硝基苯磺酸投入500份热水中,煮沸溶解。除去少量的砜。加纯碱50份进行中和然后加活性炭脱色,趁热过滤,滤液冷却结晶。滤饼用少量水洗后,在50℃以下干燥,即得成品。</p> | |
<p>是染料中间体,用作还原染料、硫化染料的防染剂和染料的成色保护剂,并可用作船舶的防锈剂及电镀退镍剂</p> |
