Thioglycolic Acid (TGA), CAS 68-11-1, is also known as Mercaptoacetic Acid. It is a sulfur-containing carboxylic acid. For an inquiry, state the required concentration, intended process and material-compatibility requirements.
Thioglycolic Acid (TGA) CAS 68-11-1
- CAS: 68-11-1
- Synonyms: Mercaptoacetic Acid; 2-Mercaptoacetic Acid; TGA
- Einecs: 200-677-4
- Molecular Formula: C₂H₄O₂S
- Grade: Confirm the current product-specific specification.
- Package: Confirm packaging requirements for the proposed material and destination.
Product Description
1. Product identity: Thioglycolic Acid (TGA), also called mercaptoacetic acid, is a sulfur-containing carboxylic acid identified by CAS 68-11-1.
2. Product-specific specification: Confirm the current product-specific specification.
| Inspection item | Current product-specific specification |
| Assay / concentration | Confirm the current product-specific specification. |
| Density | Confirm the current product-specific specification. |
| pH | Confirm the current product-specific specification. |
3. Industrial context: Thioglycolic acid may be evaluated for sulfur-chemistry processes when the required concentration, process compatibility, and safety controls are defined.
4. Packaging: Confirm packaging requirements for the proposed material and destination.
For a related mercapto-acid raw material, see 3-Mercaptopropionic Acid.
5. Storage and handling: Handling, storage, and process requirements must be reviewed against the applicable SDS and current product-specific specification.
6. Safety review: Handling, storage, and process requirements must be reviewed against the applicable SDS and current product-specific specification.
FAQ - Technical & Supply Chain
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Q:
Are Thioglycolic Acid, TGA and Mercaptoacetic Acid the same material?
A: Yes. These names identify CAS 68-11-1, formula C2H4O2S and molecular weight about 92.12 g/mol. Commercial TGA is supplied at different concentrations such as 70%, 80%, 90% or 99%+, so state the concentration and water basis. -
Q:
What is Thioglycolic Acid used for?
A: TGA is used in hair-waving and depilatory products, PVC stabilizer chemistry, epoxy resin systems, metal treatment and cleaning, and as a sulfur-containing reducing reagent. The intended reaction or formulation determines whether a dilute aqueous grade or high-assay material is needed. -
Q:
Which specifications should be agreed when purchasing industrial TGA?
A: Confirm TGA content and method, water basis, color or Pt-Co number, density, iron and chloride or organic-chlorine limits. Concentration and impurity limits differ between 80%, 90% and high-assay grades. -
Q:
What are typical physical properties of Thioglycolic Acid?
A: TGA is normally a colorless to pale-yellow liquid with typical density about 1.32-1.33 g/cm3 and melting point around -16 C. Reported boiling point is commonly around 96 C at 5 mmHg, with possible decomposition at higher temperature; a reported closed-cup flash point is near 130-132 C. -
Q:
How should Thioglycolic Acid be stored, shipped and handled?
A: Keep it cool, dry and tightly closed away from oxidizers, heat and incompatible metals. TGA is UN 1940, Class 8 corrosive, and many grades recommend storage around 2-8 C with protective equipment during transfer. Agree container material, net quantity, seals and destination requirements before bulk delivery.
Ordering & Documentation
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