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| CAS号 : | 94-13-3 |
精确质量 : | 180.07900 |
| 分子式 : | C10H12O3 |
logP : | 1.95900 |
| 分子量 : | 180.20000 |
PSA : | 46.53000 |
对羟基苯甲酸丙酯 | |
propylparaben | |
94-13-3 | |
C10H12O3 | |
180.20000 | |
46.53000 | |
1.95900 | |
180.07900 |
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1.5050
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白色结晶粉末
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库房低温,通风,干燥
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124.6ºC
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133°C
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95-98 °C(lit.)
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1.0630
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Stable. Incompatible with strong oxidizing agents, strong bases.
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DH2800000
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1
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S26-S24/25
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2918290000
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Xi
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R36/37/38
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HS: 2918290000 Other carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives |
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品名, 成分含量, 用途 |
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A.入境货物通关单 B.出境货物通关单 |
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R.进口食品卫生监督检验 S.出口食品卫生监督检验 |
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2918290000 其他含酚基但不含其他含氧基羧酸及其酸酐、酰卤化物、过氧化物和过氧酸及它们的衍生物。监管条件:AB(入境货物通关单,出境货物通关单)。增值税率:17.0%。退税率:9.0%。最惠国关税:6.5%。普通关税:30.0% |
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HS: 2918290000 other carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) VAT:17.0% MFN tariff:6.5% General tariff:30.0% |
1.由对羟基苯甲酸与正丙醇酯化而得。将对羟基苯甲酸和丙醇混合,加热使溶解,慢慢加入硫酸,继续加热回流8h后冷却,倒入4%碳酸钠溶液中析出结晶,过滤,水洗至中性即为粗品,再经乙醇重结晶而得成品。制备中,也可采用阳离子交换树脂代替硫酸催化剂。 | |
主要用于杀菌防腐剂,饲料防腐剂,杀菌防腐作用大于尼泊金乙酯。 |