Potassium thioglycolate

CAS Number
34452-51-2
EC Number
252-038-4
Abbreviation
K-TGA

What is Potassium thioglycolate?

Potassium thioglycolate (CAS 34452-51-2), commonly abbreviated as K-TGA, is the potassium salt form of thioglycolic acid.

Where is Potassium thioglycolate used?

  • Hair care: reducing agent and keratin-disulfide bond disruptor in professional depilation and chemical straightening products
  • Leather processing: depilatory agent that removes hair from hides during the beamhouse stage
  • Textile processing: wool fiber modification through controlled reduction of cystine linkages
  • Chelating agent where sequestration of metal ions stabilizes the active system
  • It enables the modification of protein-based substrates.

Good to know: Procurement teams source it as a more pH-compatible alternative to ammonium thioglycolate in formulations requiring tighter alkalinity control.

Commercial specifications

  • Aqueous solution, concentration typically around 40–50% active content
  • Cosmetic-grade material meets purity requirements aligned with personal care manufacturing standards
  • Bulk liquid supply in drums or IBC containers

Other Names (Synonyms)

Acetic acid, mercapto-, monopotassium salt|Potassium 2-mercaptoacetate|XP5WZO5W6H|Acetic acid, 2-mercapto-, potassium salt (1:1)|Potassium Mercaptoacetate|Mercaptoacetic Acid Potassium Salt|Thioglycolic Acid Potassium Salt|K-TGA

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What are the physical properties of Potassium thioglycolate?

Melting Point 226-229 °C
Density 1.365[at 20℃]
Appearance Clear faintly pink solution
Color Clear faintly pink
Form Solution
Water Solubility 785.8g/L at 20℃
Vapor Pressure 0.001Pa at 25℃
Log P -2.99 at 20℃

How is Potassium thioglycolate classified and handled safely? Learn More

Danger
GHS05· Corrosive GHS06· Toxic GHS07· Irritant GHS08· Health Hazard

Hazard Statements

H290 May be corrosive to metals
H301 Toxic if swallowed
H312 Harmful in contact with skin
H315 Causes skin irritation

Precautionary Statements

P234 Keep only in original packaging.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.

Which trade and regulatory codes apply to Potassium thioglycolate?

HS Code 29309099
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