甲基磺酸









































































甲基磺酸



IUPAC名
Methanesulfonic acid
别名
 甲磺酸
甲烷磺酸
MSA
识别

CAS号
75-75-2  ✓

PubChem
6395

ChemSpider
6155

SMILES


InChI


EINECS
200-898-6

ChEBI
27376
性质

化学式
 CH4O3S

摩尔质量
 96.11 g·mol−1

密度
 1.48 g/cm3

熔点
 17～19 °C（290～292 K）

沸点
 167 ºC /10 mmHg

pKa
−1.9[1]
危险性

欧盟危险性符号


有害有害 Xn


腐蚀性腐蚀性 C



MSDS
Oxford MSDS
若非注明，所有数据均出自一般条件（25 ℃，100 kPa）下。

甲磺酸（英语：methanesulfonic acid）是最简单的烷基磺酸。




目录






  • 1 性质


  • 2 制备


  • 3 用途


  • 4 参考文献


  • 5 参见





性质


无色液体。易溶于水，微溶于有机溶剂。具强酸性，pKa为−0.6。在热水或热碱液中不水解。



制备


由甲烷与三氧化硫反应[來源請求]，或由甲硫醇被硝酸氧化而得。



用途


用于催化酯化、烷基化、聚合反应，也常被用作為溶剂。



参考文献





  1. ^ Guthrie, J. P. Hydrolysis of esters of oxy acids: pKa values for strong acids. Can. J. Chem. 1978, 56, 2342-2354.




参见


  • 伊顿试剂



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