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Name |
2-Mercaptopropionic acid |
EINECS | 201-206-5 |
CAS No. | 79-42-5 | Density | 1.218 g/cm3 |
PSA | 76.10000 | LogP | 0.38930 |
Solubility | miscible with water | Melting Point |
10-14 °C(lit.) |
Formula | C3H6O2S | Boiling Point | 205.3 °C at 760 mmHg |
Molecular Weight | 106.145 | Flash Point | 87 °C |
Transport Information | UN 2936 6.1/PG 2 | Appearance | Clear colorless to slightly yellow liquid |
Safety | 26-36/37/39-45-25 | Risk Codes | 34-22 |
Molecular Structure | Hazard Symbols | C | |
Synonyms |
Propionicacid, 2-mercapto- (8CI);Propionic acid, a-mercapto- (3CI);2-Thiolactic acid;Thiolacticacid;a-Mercaptopropanoic acid;a-Mercaptopropionic acid;Thiolactic acid; |
Article Data | 55 |
Ethyl 2-mercaptopropionate
2-mercaptopropanoic acid
Conditions | Yield |
---|---|
With sodium hydroxide In phosphate buffer for 2h; | 99% |
Ethyl (R,S)-2-(Acetylthio)propionate
2-mercaptopropanoic acid
Conditions | Yield |
---|---|
With sodium hydroxide |
2,2'-trisulfanediyl-di-propionic acid
2-mercaptopropanoic acid
Conditions | Yield |
---|---|
With hydrogenchloride; zinc | |
With sodium amalgam | |
With sulfuric acid durch Elektrolytische Reduktion an Blei-Kathode; |
Conditions | Yield |
---|---|
With sodium hydrogensulfide; hydrogen sulfide; water und Erhitzen des Reaktionsgemisches mit wss.Salzsaeure; |
Conditions | Yield |
---|---|
With alkali disulfide Reduktion der entstehenden Thiodilactylsaeure mit granuliertem Zink und Schwefelsaeure; |
2-chloro-propanoic acid, ethyl ester
(S)-2-((S)-1-Carboxy-ethyldisulfanyl)-propionic acid
B
2-mercaptopropanoic acid
Conditions | Yield |
---|---|
With potassium hydrosulfide |
2-(ethoxycarbonothioyl)sulfanyl propanoic acid
2-mercaptopropanoic acid
Conditions | Yield |
---|---|
With ammonium hydroxide; ethanol ueber mehrere Stufen; |
2-(ethoxycarbonothioyl)sulfanyl propanoic acid
A
O-ethyl thiocarbamate
B
2-mercaptopropanoic acid
Conditions | Yield |
---|---|
With ammonia |
Conditions | Yield |
---|---|
With hydrogenchloride; zinc | |
With sodium amalgam |
(+)-2,2'-dithiobispropionic acid
2-mercaptopropanoic acid
Conditions | Yield |
---|---|
at 25℃; Redoxgleichgewicht (polarimetrische Bestimmung); |
Molecular Structure of 2-Thiolactic acid (CAS NO.79-42-5):
IUPAC Name: 2-Sulfanylpropanoic acid
Molecular Formula: C3H6O2S
Molecular Weight: 106.14
XLogP3-AA: 0.5
H-Bond Donor: 1
H-Bond Acceptor: 2
EINECS: 201-206-5
Index of Refraction: 1.494
Molar Refractivity: 25.36 cm3
Molar Volume: 87.1 cm3
Surface Tension: 42.6 dyne/cm
Density: 1.218 g/cm3
Flash Point: 87 °C
Enthalpy of Vaporization: 48.66 kJ/mol
Boiling Point: 205.3 °C at 760 mmHg
Vapour Pressure: 0.103 mmHg at 25 °C
Melting Point: 10-14 °C(lit.)
Water Solubility: MISCIBLE
Product Categories: acid Flavor
Appearance: Clear colorless to slightly yellow liquid
Canonical SMILES: CC(C(=O)O)S
InChI: InChI=1S/C3H6O2S/c1-2(6)3(4)5/h2,6H,1H3,(H,4,5)
InChIKey: PMNLUUOXGOOLSP-UHFFFAOYSA-N
Air & Water Reactions: Soluble in water and denser than water
2-Thiolactic acid (CAS NO.79-42-5) is used as temporarily allow the use of food spices. It is also used as a depilatory and in hair waving preparations.
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
rat | LCLo | inhalation | 700ppm (700ppm) | Kodak Company Reports. Vol. 21MAY1971, |
Reported in EPA TSCA Inventory.
Safety Information of 2-Thiolactic acid (CAS NO.79-42-5):
Hazard Codes: C
Risk Statements: 34-22
R22:Harmful if swallowed.
R34:Causes burns.
Safety Statements: 26-36/37/39-45-25
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S25:Avoid contact with eyes.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: UN 2936 6.1/PG 2
WGK Germany: 1
RTECS: UF5250000
HazardClass: 6.1
PackingGroup: II
Poison by ingestion. Moderately toxic by inhalation. When heated to decomposition it emits toxic fumes of SOx.
DOT Classification: 6.1; Label: Poison
2-Thiolactic acid (CAS NO.79-42-5), its Synonyms are 2-Mercaptopropanoic acid ; 2-Mercaptopropionic acid ; Propanoic acid, 2-mercapto- ; Propionic acid, 2-mercapto- ; Thiolactic acid ; alpha-Mercaptopropanoic acid ; alpha-Mercaptopropionic acid ; 2-Thiolpropionic acid .