2-Mercaptoethanol, commonly known as beta-mercaptoethanol or 2-ME, is a vital chemical reagent with a diverse range of applications in scientific, industrial, and research settings. Its unique chemical structure, comprising a thiol (-SH) group attached to a two-carbon chain, imparts distinct reactivity and properties, making it a valuable tool in various processes.


  • Protein Denaturation and Reduction
  • RNA and DNA Analysis
  • Cell Culture
  • Antioxidant
  • Personal care and cosmetic
  • Adhesives
  • Coating

Purity more than 99%

Appearance Colorless to Very Faint Yellow
Physical State Liquid
Odor Strong disagreeable odor
Density 1.044 g/cm3 at 25 °C
Boiling Point 77 °C
Freezing Point –23.39 °C
Flash Point 74 °C (open cup)
Viscosity 3.43 cP
Vapor Pressure0.13 at 20 °C


2-mercaptoethanol Mercaptoethanol 60-24-2 Beta-Mercaptoethanol Thioglycol 2-Sulfanylethanol Ethanol, 2-mercapto- 2-Thioethanol Thioethylene glycol 2-Hydroxyethanethiol 2-Hydroxyethyl mercaptan Monothioglycol Thiomonoglycol 2-Hydroxy-1-ethanethiol 1-Ethanol-2-thiol Hydroxyethyl mercaptan Monothioethylene glycol 2-Mercapto-1-ethanol 1-Hydroxy-2-mercaptoethane 2-Mercaptoethyl alcohol 2-ME Mercaptoetanol Ethylene glycol, monothio- 1-Mercapto-2-hydroxyethane beta-Hydroxyethanethiol 2-sulfanylethan-1-ol 2-Hydroxyethylmercaptan Emery 5791 USAF EK-4196 .beta.-Hydroxyethanethiol Monothioethyleneglycol .beta.-Mercaptoethanol beta-Hydroxyethylmercaptan NSC 3723 .beta.-Hydroxyethylmercaptan 2-mercapto ethanol CCRIS 2097 HSDB 5199 EINECS 200-464-6 UN2966 BRN 0773648 UNII-14R9K67URN AI3-07710 14R9K67URN DTXSID4026343 CHEBI:41218 NSC-3723 155613-89-1 EC 200-464-6 4-01-00-02428 (Beilstein Handbook Reference) BME 2-Mercaptoethanol, >=99.0% |A-mercaptoethanol Cuprate(6-), .mu.-2,2-(1-methyl-1,2-ethanediyl)bisimino(6-fluoro-1,3,5-triazine-4,2-diyl)imino(2-hyd 2-SULFHYDRYL-ETHANOL 2mercaptoethanol b-mercaptoethanol 2-mercapto-ethanol 2-sulfanyl-ethanol beta-sulfanylethanol hydroxyethyl sulfide mercaptoethyl alcohol MFCD00004890 beta -mercaptoethanol 2-Sulfanylethanol # Mercaptoethanol, 2- 2-hydroxy-ethanethiol Etanol, 2-mercapto- 2-mercaptoethan-1-ol HSCH2CH2OH D06HKH D0Q5FV WLN: SH2Q DivK1c_000784 BDBM7971 CHEMBL254951 2-MERCAPTOETHANOL [MI] FEMA NO. 4582 HMS502H06 KBio1_000784 NSC3723 NINDS_000784 Thioglycol [UN2966] [Poison] Thioglycol [UN2966] [Poison] NA2966 STL482546 2-Mercaptoethanol, for electrophoresis AKOS000118900 CCG-231050 DB03345 UN 2966 IDI1_000784 BP-21398 LS-66846 2-Mercaptoethanol, for synthesis, 99.0% M0058 M1948 EN300-19346 C00928 2-Mercaptoethanol, SAJ special grade, >=99.0% A832651 Q411084 InChI=1/C2H6OS/c3-1-2-4/h3-4H,1-2H Q-200296 F0001-1577 Z104473584 2-Mercaptoethanol, for HPLC derivatization, >=99.0% (GC) 2-Mercaptoethanol, BioUltra, for molecular biology, >=99.0% (GC) 2-Mercaptoethanol, for molecular biology, for electrophoresis, suitable for cell culture, BioReagent, 99% (GC/titration) Cuprate(6-), [.mu.-[[2,2′-[(1-methyl-1,2-ethanediyl)bis[imino(6-fluoro-1,3,5-triazine-4,2-diyl)imino[2-(hydroxy-.kappa.O)-5-sulfo-3,1-phenylene](2,1-diazenediyl-.kappa.N2)(phenylmethylene)-2,1-diazenediyl-.kappa.N1]]bis[4-sulfobenzoato-.kappa.O]](10-)]]di-, sodium