Monoethanolamine Thiolactate

(Monoethanolamine 2-Mercaptopropionate) CAS# 54266-38-5, EC# 259-050-9


Dr. Ralph Evans developed in Hoboken, New Jersey, in the early 1940s Thioglycolic Acid as an active material for cold wave permanents. Today mainly TGA salts are used in cosmetic applications for hair perms, straighteners and depilatories.

In the 1990s BRUNO BOCK startet the manufacture of the less toxic Thiolactic Acid and its salt Ammonium Thiolactate and Monoethanolamine Thiolactate.

Ammonium Thiolactate is not classified as toxic and is used in hair perms instead of or additional to Ammonium Thioglycolate or Monoethanolamine Thioglycolate.


Monoethanolamine Thiolactate's reducing properties of the SH-group opens the sulfur bridges in the ceratine structure of the hair. If this is done when the hair is wrapped around hair rollers, the hair structure is weakened. After rinsing in a second step the sulfur bridges are reconnected with an oxidizing chemical like hydrogenperoxide and the hair fibre gets its desired curled shape. These properties allow the use in hair perms.

Production Facilities

As leading producer Monoethanolamine Thiolactate BRUNO BOCK and EVANS CHEMETICS are providing state of the art quality from their production facility in Marschacht, Germany (near Hamburg), and excellent customer service from their sales offices in Marschacht and Teaneck, New Jersey, in the USA.


Monoethanolamine Thiolactate is produced by BRUNO BOCK as high purity solution to be used in cosmetic applications like hair perms.

Monoethanolamine Thiolactate

Product Name



Monoethanolamine Thiolactate63 %


Products SDS Datasheet
    Monoethanolamine Thiolactate