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| CAS号 : | 762-42-5 |
精确质量 : | 142.02700 |
| 分子式 : | C6H6O4 |
logP : | -0.66420 |
| 分子量 : | 142.10900 |
PSA : | 52.60000 |
丁炔二酸二甲酯 | |
Dimethyl acetylenedicarboxylate | |
762-42-5 | |
C6H6O4 | |
142.10900 | |
52.60000 | |
-0.66420 | |
142.02700 |
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透明无色至淡黄色液体
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n20/D 1.447(lit.)
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Stable under normal temperatures and pressures.
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187 °F
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Keep away from heat, sparks, and flame. Store in a cool, dry place. Store in a tightly closed container. Corrosives area.
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-18 °C
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1.156 g/mL at 25 °C(lit.)
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95-98 °C19 mm Hg(lit.)
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III
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8
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2917190090
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UN 3265 8/PG 2
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3
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R22; R34
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S23-S26-S27-S36/37/39-S45
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ES0175000
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C
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品名, 成分含量, 用途, 对苯二甲酸请注明4-CBA值, 对苯二甲酸请注明P-TL酸值, 对苯二甲酸请注明色度, 对苯二甲酸请注明水分 |
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2917190090 其他无环多元羧酸. 增值税率:17.0% 退税率:9.0% 监管条件:无 最惠国关税:6.5% 普通关税:30.0% |
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2917190090 acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
丁炔二甲酸钾与甲醇在浓硫酸存在下室温反应4d,以72-88%的收率生成丁炔二酸二甲酯。 | |
1.用于有机合成 |
