What are the effects of thioglycolic acid

Thioglycolic acid used in the production of epoxy resin, bisphenol A catalyst, is the main raw material of daily cosmetics cold perm and hair removal agent, can also be used as a synthetic PVC transparent plastic and organic antimony, organic tin heat stabilizer of the basic raw materials. Its reagent products are sensitive reagents for testing iron, molybdenum, silver, tin and other metal ions. It is an inhibitor of copper sulfide and iron sulfide minerals in beneficiation. In the petrochemical industry and the railway sector, used for equipment and rail cleaning rust.
1. TGA has both the reaction characteristics of hydroxy acid and the reaction characteristics of thiol group, among which the important reaction is the reaction with disulfide. In particular, it reacts with cystine in the hair under alkaline conditions to cut the cystine (-S-S-) bond and generate cysteine, which is easy to curl. It is an intermediate for the production of thiopril (capptolide), biotin, zinc sulfate, sodium dithiosuccinate and other pharmaceuticals. It is also an important raw material for the synthesis of cysteine, hormonal agent, industrial disinfectant and synthetic sulfuric acid.
Its ammonium salt and sodium salt are mainly used as hair rolling agent, calcium salt can be used as depilatory agent, polyvinyl chloride low toxicity or non-toxic stabilizer, polymerization initiator, accelerator and chain transfer agent, metal surface treatment agent. In addition, thioglycolic acid is a sensitive reagent for the determination of iron, molybdenum, aluminum, tin, etc. It can also be used as a crystallization nucleating agent for polypropylene processing and molding, as well as a modifier for coatings, fibers, and a blanket speed agent. PVC, rubber stabilizer raw materials, cold perm medicine, pharmaceutical intermediates.
3. Used as a chromogenic agent for the photometric determination of molybdenum, rhenium and iron, and as a masking agent. Its salts are also used in the formulation of curling perms and depilatory agents.
4. Hair removal agents. Thioglycolate salt in a strong alkaline, coated on the skin can be rapid hair removal. Thioglycolic acid can be used for hair removal before cosmetic, clinical surgery and animal experiments. The calcium salt of thioglycolic acid is commonly used, and the suitable pH value is 11.5~12. The effective content is low: 5% thioglycolic acid, 7% calcium salt.
5. Metal surface treatment agent. Adding a very small amount of thioglycolic acid can improve the cleaning effect of metal cleaning agent and immersion liquid, and can inhibit the corrosion of the treated metal surface, so it is commonly used in the precision processing of metal rust inhibitor. This effect is significant over a wide range of ph values. The multi-component cleaning-anti-rust liquid containing thioglycolic acid can be used for the cleaning of automobile cooling systems with a ph value of 10.6. The hexadecyl ester of thioglycolic acid can polish or clean silver products without tarnishing the surface of the silver.
6. Polyoxyethylene low toxicity or non-toxic stabilizer. Thioglycolic acid octyl stannic acid, methyl tin ester, octyl ester, 2-ethylhexyl ester, methoxy butyl ester, ethoxy ethyl ester, etc. have low toxicity and non-toxic, approved by the United States Food and Drug Administration, the above esters can be used as low toxicity and non-toxic stabilizers. It can be used for the processing of PVC water pipes, water pumps and other products, food packaging, equipment pipes in food processing plants, and can also be used in cosmetics factories and pharmaceutical factories, and such stabilizers make products transparent and thermal stability are improved. In addition, this product is a sensitive reagent for the determination of iron, molybdenum, lead, tin, etc. Can also be used as a fiber modifier, blanket finishing agent.
7. Used as a reagent and stabilizer for the determination of iron, used in the manufacture of liquid medicine, perm water, etc.