Ammonium Thioglycolate

(Ammonium mercaptoacetate) CAS# 5421-46-5, EC# 226-540-9


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.

Ammonium Thioglycolate or Monoethanolamine Thioglycolate are used in cosmetics for hair perms and straigtheners whereas Calcium Thioglycolate or Potassium Thioglycolate are used in depilatories.


Ammonium Thioglycolate's unique 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 as well as in hair straighteners. In the latter case the pH-value of the formulations is higher.

Production Facilities

As the leading producers of Ammonium Thioglycolate BRUNO BOCK and EVANS CHEMETICS are providing state of the art quality from their production facilities in Marschacht, Germany (near Hamburg), and Waterloo New York, USA and excellent customer service from their sales offices in Marschacht and Teaneck, New Jersey, in the USA.


Ammonium Thioglycolate is produced by BRUNO BOCK and EVANS CHEMETICS as a high purity solution to be used in cosmetic applications like hair perms and straighteners. Special low odor grades are also available.

Technical grades are also used in Oilfield Chemical formulations in down hole applications or as corrosion inhibitors.

Ammonium Thioglycolate

Product Name



Ammonium Thioglycolate59 %
59 % 6.4
59 % l.o.
71 %
71 % l.o.
71 % techn.

pH 6,4
low odor

low odor
technical grade


Products SDS Datasheet
    Ammonium Thioglycolate
  • 59 % (50 % TGA)
  • 59 % pH 6.4 (50 % TGA)
  • 59 % low odor (50 % TGA)
  • 71 % (60 % TGA)
  • 71 % low odor (60 % TGA)
  • 71 % technical grade