2-Mercaptopropionic Acid 2-Mercaptopropionic Acid
Structural formula
| Business number | 01PX |
|---|---|
| Molecular formula | C3H6O2S |
| Molecular weight | 106.14 |
| label |
thiolactic acid, Thiolactic Acid, 2-Mercaptopropionic acid, Aliphatic sulfur compounds |
Numbering system
CAS number:79-42-5
MDL number:MFCD00004862
EINECS number:201-206-5
RTECS number:UF5250000
BRN number:506218
PubChem number:24901535
Physical property data
1. Properties: A liquid with a special smell, corrosive and tear-inducing
2. Density (g/mL, 25/4℃): 1.197
3. Relative vapor density (g/mL, air=1): Uncertain
4. Melting point (ºC): 10-14°C.
5. Boiling point (ºC, normal pressure): 102°C
6. Boiling point (ºC, 5.2kPa): Uncertain
7. Refractive index : 1.4804-1.4824
8. Flash point (ºC): 87°C
9. Specific rotation (º): Uncertain
10. Spontaneous combustion Point or ignition temperature (ºC): Uncertain
11. Vapor pressure (kPa, 25ºC): Uncertain
12. Saturated vapor pressure (kPa, 60ºC): Uncertain
13. Heat of combustion (KJ/mol): Uncertain
14. Critical temperature (ºC): Uncertain
15. Critical pressure (KPa) : Uncertain
16. Log value of oil-water (octanol/water) partition coefficient: Uncertain
17. Explosion upper limit (%, V/V): Uncertain
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18. Lower explosion limit (%, V/V): Uncertain
19. Solubility: Miscible with water, ethanol and ether
Toxicological data
Acute toxicity
Oral LD50 672mg/kg(mus)
730mg/kg(rat)
Inhalation LCLo 700ppm(rat)
Main irritant effects:
On skin: corrosive effect on skin and mucous membranes
On eyes: strongly corrosive effect
Sensitization: No known sensitizing effects.
Ecological data
General remarks
Water hazard level 1 (German regulations) (self-assessment via list) This substance is slightly hazardous to water.
Do not allow undiluted or large amounts of product to come into contact with groundwater, waterways or sewage systems.
Do not discharge materials into the surrounding environment without government permission.
Molecular structure data
1. Molar refractive index: 25.36
2.� Molar volume (cm3/mol): 87.1
3. Isotonic specific volume (90.2K): 222.5
4. Surface tension (dyne/cm ): 42.6
5. Polarizability (10-24cm3): 10.05
Compute chemical data
1. Reference value for hydrophobic parameter calculation (XlogP): 0.5
2. Number of hydrogen bond donors: 1
3. Number of hydrogen bond acceptors: 2
4. Number of rotatable chemical bonds: 1
5. Topological molecular polar surface area (TPSA): 37.3
6. Number of heavy atoms: 6
7. Surface charge: 0
8. Complexity: 61.8
9. Number of isotope atoms: 0
10. Determine the number of atomic stereocenters : 0
11. The number of uncertain atomic stereocenters: 1
12. The number of determined chemical bond stereocenters: 0
13. The uncertainty of chemical bond formation Number of structural centers: 0
14, Number of covalent bond units: 1
Properties and stability
This product is toxic. See thioglycolic acid.
Storage method
This product should be sealed and stored in a cool place.
Synthesis method
After thiopyruvate is prepared by reacting pyruvic acid with hydrogen sulfide, it is then reduced with sodium amalgam.
Purpose
For the determination of cobalt.
