| Chemical Formula | C2H4O2S
|
| Molecular Weight | 92.12 |
| Structural Formula | |
| Density | 1.326g/mLat 20°C(lit.) |
| Melting Point | −16°C(lit.) |
| Boiling Point | 96°C5mm Hg(lit.) |
| Flash Point | 126 °C |
| Water Solubility | soluble |
| Vapor Pressure | 0.4 mm Hg ( 25 °C) |
| Vapor Density | 3.2 (vs air) |
| Refractive Index | n20/D 1.505(lit.) |
| Acidity Coefficient (pKa) | 3.68(at 25℃) |
| PH Value | 1 (H2O, 20℃) |
| Storage Conditions | Store at +2°C to +8°C. |
| Sensitivity | Air Sensitive |
| Appearance | Solid |
| Color | clear clear, colorless |
| Merck | 14,9336 |
| BRN | 506166 |
| Exposure Limit | TLV-TWA 1 ppm (～3.8 mg/m3) (ACGIH). |
| Physicochemical Properties | Pure thioglycolic acid is a colorless and transparent liquid, while industrial grade is colorless to slightly yellow, with a strong pungent odor. It is miscible with water, ethanol, and ether. Perm products utilize thioglycolic acid to break some of the disulfide bonds in hair to alter the degree of curl, achieving perming and styling effects. However, thioglycolic acid is toxic, easily absorbed through the skin and respiratory tract, causing symptoms such as skin damage and allergies, and even affecting body metabolism. Long-term exposure can cause damage to various tissues and organs, and it has strong mutagenicity and reproductive toxicity. Therefore, strict control is required. |
Main Uses:Thioglycolic acid has a wide range of uses. In the chemical industry, it can be used as a catalyst for epoxy resin and bisphenol A production scenarios, and as a heat stabilizer for PVC production scenarios; in the daily chemical industry, it can be used as a chemical raw material for the production of cold waving lotions, hair curling agents, depilatories, and other products; in the pharmaceutical field, it can be used as an intermediate for the production of biotin, thioctic acid, captopril, dimercaptosuccinic acid (heavy metal antidote), tiopronin (liver disease treatment drug), and other medications; in the metallurgy field, it can be used as a metal surface treatment agent and rust inhibitor for precision metal processing scenarios; in the mining field, it can be used as a color developing agent for the photometric determination of metal ions such as molybdenum, rhenium, and iron; in the electronics industry, high-quality thioglycolic acid is mainly used for chemical cleaning of chips and encapsulation components of solar cells.
