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二丙酮醇

二丙酮醇[1]
IUPAC名
4-Hydroxy-4-methyl-pentan-2-one
别名 双丙酮醇
4-羟基-4-甲基-2-戊酮
甲基戊酮醇
DAA
识别
CAS号 123-42-2  checkY
ChemSpider 13838151
SMILES
 
  • CC(=O)CC(C)(C)O
InChI
 
  • 1/C6H12O2/c1-5(7)4-6(2,3)8/h8H,4H2,1-3H3
InChIKey SWXVUIWOUIDPGS-UHFFFAOYAN
ChEBI 55381
RTECS SA9100000
性质
化学式 C6H12O2
摩尔质量 116.16 g·mol⁻¹
外观 无色甜嗅液体
密度 0.938 g/mL
熔点 - 47 °C
沸点 166 °C
溶解性 混溶
溶解性(其他) 溶于多数有机溶剂
蒸氣壓 110 Pa (20 °C)
折光度n
D
1.4235
危险性
警示术语 R:R36
安全术语 S:S2, S24/25
欧盟分类 刺激性 (Xi)
可燃 (F)
相关物质
相关化学品 丙酮, 甲基异丁基酮
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

二丙酮醇,结构式CH3COCH2C(OH)(CH3)2

性质

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无色稍有薄荷气味液体。与水、芳烃卤代烃等溶剂混溶,但不与高碳脂肪烃混溶。在碱性溶液中易分解为丙酮。可燃。低毒,对皮肤刺激性小。与水形成二元共沸物,共沸点99.8°C,含水87.3%(重量)。

制备

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由两分子丙酮作用下发生羟醛加成制备。


从丙酮缩合制备二丙酮醇

用途

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用作中沸点溶剂,用于溶解树脂、醋酸纤维素硝酸纤维素、乙基纤维素、聚乙酸乙烯酯聚苯乙烯和有机玻璃等,但不能溶解橡胶。此外,也用作木材防腐剂、金属清洁剂、药物抗沉剂和有机合成原料等,用于异丙叉丙酮和溶剂甲基异丁基酮的制取。

参考资料

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  1. ^ Record of Diacetonalkohol in the GESTIS Substance Database from the IFA英语Institute for Occupational Safety and Health
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二丙酮醇
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