Sodium Thioglycolate
Sodium mercaptoacetate, STG, Mercaptoacetic acid sodium salt.
- CAS
- 367-51-1
- EC
- 206-696-4
- Sectors
- Personal Care & Cosmetics, Mining & Metals
Sodium Thioglycolate (CAS 367-51-1) is a white, solid reducing agent salt of mercaptoacetic acid that breaks disulfide bridges in keratin-based structures, and it is used as a depilatory agent in hair removal products and as a depressant in copper-molybdenum flotation. This chemical is available in various purity levels, ensuring consistency for both Technical Grade and Cosmetic Grade applications.
In the mining industry, it serves as a specialized depressant for selective flotation processes, specifically for separating copper from molybdenum. Its strong reactivity and efficiency make it a superior alternative to traditional inorganic sulfide agents.
As a primary depilatory agent, it is widely used in hair removal products and professional perming solutions. Its aqueous stability and role as an oxygen scavenger provide significant value in complex chemical formulations.
Typical Properties
| Molecular formula | C2H4O2S.Na |
|---|---|
| Molecular weight | 114.1 g/mol |
| Appearance | White solid |
| Form | solid |
| Color | White powder |
| Odor | Stench odour |
| Melting point | >300 °C |
| Water solubility | soluble |
| pH | 6.7 (100g/l, H2O, 20°C) |
| GHS signal word | Danger · Corrosive, Acute toxicity, Irritant / harmful, Health hazard, Environmental hazard |
| HS code | 29309070 |
| Grades available | Cosmetic Grade, Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Sodium Thioglycolate
Applications
- Cosmetic Depilatories: Functions as the active salt in hair removal creams, effectively dissolving hair structure by reducing keratin disulfide bonds.
- Mining Flotation: Acts as an organic depressant in the processing of copper-molybdenum ores, improving the selectivity and recovery of precious metals.
- Laboratory Reagents: Used in the preparation of thioglycolate broth, creating an anaerobic environment necessary for the cultivation of specific microorganisms.
Safety & Risks
This substance is Harmful if swallowed and can cause allergic skin reactions or serious eye irritation. Operators must utilize nitrile gloves, chemical safety goggles, and respiratory protection when handling the concentrated powder or solution.
Packaging
- 25 kg Plastic Drums
- 250 kg Blue HDPE Drums
- 1000 kg IBC Tanks