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| CAS号 : | 105-43-1 |
精确质量 : | 116.08400 |
| 分子式 : | C6H12O2 |
logP : | 1.50720 |
| 分子量 : | 116.15800 |
PSA : | 37.30000 |
3-甲基戊酸 | |
DL-3-Methylvaleric acid | |
105-43-1 | |
C6H12O2 | |
116.15800 | |
37.30000 | |
1.50720 | |
116.08400 |
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n20/D 1.416(lit.)
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无色液体带有一种恶臭
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185 °F
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196-198 °C(lit.)
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-41 °C
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insoluble
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0.93 g/mL at 25 °C(lit.)
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0.147mmHg at 25°C
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Stable at room temperature in closed containers under normal storage and handling conditions.
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Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.
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8
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3
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S26-S36/37/39-S45
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II
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UN 3265 8/PG 2
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2915600000
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C
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R34
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2915600000. Butanoic acids, pentanoic acids, their salts and esters |
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品名, 成分含量, 用途 |
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HS:2915600000 丁酸、戊酸及其盐和酯 增值税率:17.0% 退税率:9.0% 监管条件:无 最惠国关税:5.5% 普通关税:30.0% |
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2915600000 butanoic acids and pentanoic acids and their salts and esters VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
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HS: 2915600000 Butanoic acids, pentanoic acids, their salts and esters |
1.将200g氢氧化钾溶于200ml水,搅拌加热,滴加200g仲丁基丙二酸二乙酯,皂化反应放热,反应液平稳回流2h。然后用200ml水稀释,蒸出皂化生成的乙醇。剩余的反应产物冷却后加入320g浓硫酸和450ml水,回流3h。蒸出生成的有机酸,分馏提纯,得66-69g 3-甲基戊酸,收率62%-65%。 | |
OB2760—1996规定为暂时允许使用的食品用香料。本品还可用于有机合成。 |
