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CAS号 : | 111-46-6 |
精确质量 : | 106.06300 |
分子式 : | C4H10O3 |
logP : | -1.01240 |
分子量 : | 106.12000 |
PSA : | 49.69000 |
二甘醇 | |
Diethylene glycol | |
111-46-6 | |
C4H10O3 | |
106.12000 | |
49.69000 | |
-1.01240 | |
106.06300 |
n20/D 1.447(lit.)
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2.14 (vs air)
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透明液体
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-10.45℃
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143 °C
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245 °C(lit.)
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−10 °C(lit.)
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SOLUBLE
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1.118 g/mL at 25 °C(lit.)
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0.00469mmHg at 25°C
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Stable under normal temperatures and pressures.
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Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed. Store protected from moisture.
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GHS07, GHS08 | |
警告 | |
H302; H373 | |
ID5950000
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1
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S46
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2909410000
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Xn
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R22
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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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1.一缩二乙二醇是环氧乙烷制乙醇时的副产品。工艺流程:用直接水合法将环氧乙烷与水按1:8混合送入混合反应器,在150℃MPa下,反应40-60min,生成脱水塔进一步脱水;塔底的乙二醇混合液送入乙二醇塔,塔顶可得99.8%以上的乙二醇。塔底液送入一缩精馏塔,在塔顶温度135-140℃,压力4.0KPa下,从塔顶得到一缩二乙二醇。继续分离,可得二缩三乙二醇、三缩四乙二醇。精制方法:所含杂质有水、乙二醇、三甘醇等。可用减压蒸馏后分步结晶的方法精制。取二甘醇1650mL进行减压分馏,弃去480mL初馏分,收集1000mL中间馏分进行分步结晶,可得700mL二甘醇。 | |
用作气体脱水剂和芳烃抽提溶剂,也用作纺织品的润滑剂、软化剂和整理剂,以及增塑剂、增湿剂、上浆剂、硝基纤维素、树脂和油脂等溶剂。 |