Thiolactic acid
Names
Preferred IUPAC name
2-Sulfanylpropanoic acid
Other names
2-Mercaptopropanoic acid
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.001.097
EC Number
  • 201-206-5
UNII
  • InChI=1S/C3H6O2S/c1-2(6)3(4)5/h2,6H,1H3,(H,4,5)
    Key: PMNLUUOXGOOLSP-UHFFFAOYSA-N
  • SC(C)C(O)=O
Properties
C3H6O2S
Molar mass 106.14 g·mol−1
Density 1.22 g/cm3
Melting point 10 °C (50 °F; 283 K)
Related compounds
Related compounds
 lactic acid, thioglycolic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Thiolactic acid is the organosulfur compound with the formula HSCH2CO2H. The molecule contains both carboxylic acid and thiol functional groups. It is structurally related to lactic acid by the interchange of SH for OH. It is a colorless oil.

Thiolactic acid was once widely used in hair permanent waving formulations, but has been displaced by formulations based on thioglycolic acid. Instead of using the acid itself, its salts are used. It is now mainly used for depilation.[1]

See also

References

  1. ↑ T. Clausen (2006). "Hair Preparations". Ullmann’s Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a12_571.pub2. ISBN 3527306730.
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