Mercaptoacetic acid, 97+%, Thermo Scientific Chemicals

Product Code	Brand	Quantity
11494307	Thermo Scientific Alfa Aesar B20391.22	100 g
11404317	Thermo Scientific Alfa Aesar B20391.36	500 g
11414317	Thermo Scientific Alfa Aesar B20391.0E	2500 g

Description

Reagent that protects tryptophan in amino acid analysis.Mercaptoacetic acid is used as a protecting agent for tryptophan in amino acid analysis and an acidity indicator. It finds application as an intermediate in the chemical reactions such as addition, elimination and cyclization. It acts as a precursor to ammonium thioglycolate, sodium thioglycolate and calcium thioglycolate. Its organotin derivatives are used as stabilizers for polyvinyl chloride (PVC). In organic synthesis, it acts as a nucleophile in thioglycolysis reactions and sulfur transfer agent for sulfonyl chloride synthesis. Further, it is used in leather processing.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Reagent that protects tryptophan in amino acid analysis.Mercaptoacetic acid is used as a protecting agent for tryptophan in amino acid analysis and an acidity indicator. It finds application as an intermediate in the chemical reactions such as addition, elimination and cyclization. It acts as a precursor to ammonium thioglycolate, sodium thioglycolate and calcium thioglycolate. Its organotin derivatives are used as stabilizers for polyvinyl chloride (PVC). In organic synthesis, it acts as a nucleophile in thioglycolysis reactions and sulfur transfer agent for sulfonyl chloride synthesis. Further, it is used in leather processing.

Solubility
Miscible with water, ethanol, ethers, ketones, esters, chlorinated hydrocarbons, benzene and aromatic hydrocarbons. Slightly miscible with chloroform.

Notes
Air sensitive. Incompatible with strong oxidizing agents and strong acids.

Chemical Identifiers

• CAS: 68-11-1
• Molecular Weight (g/mol): 92.112
• InChI Key: CWERGRDVMFNCDR-UHFFFAOYSA-N
• PubChem CID: 1133
• IUPAC Name: 2-sulfanylacetic acid

• Molecular Formula: C2H4O2S
• MDL Number: MFCD00004876
• Synonym: mercaptoacetic acid, thioglycolic acid, 2-thioglycolic acid, acetic acid, mercapto, 2-mercaptoacetic acid, sulfanylacetic acid, thiovanic acid, mercaptoessigsaeure, thioglycollic acid, glycolic acid, thio
• ChEBI: CHEBI:30065
• SMILES: C(C(=O)O)S

Specifications

• CAS: 68-11-1
• Density: 1.295
• Flash Point: 119°C (246°F)
• Linear Formula: HSCH₂CO₂H
• MDL Number: MFCD00004876
• Beilstein: 506166
• Merck Index: 14,9336
• Solubility Information: Miscible with water,ethanol,ethers,ketones,esters,chlorinated hydrocarbons,benzene and aromatic hydrocarbons. Slightly miscible with chloroform.
• SMILES: C(C(=O)O)S
• Molecular Weight (g/mol): 92.112
• ChEBI: CHEBI:30065
• Percent Purity: ≥97%
• Chemical Name or Material: Mercaptoacetic acid, 98%

• Melting Point: °C to 12°C
• Boiling Point: 220°C
• Molecular Formula: C2H4O2S
• Refractive Index: 1.5045
• UN Number: UN1940
• Sensitivity: Air Sensitive
• Synonym: mercaptoacetic acid, thioglycolic acid, 2-thioglycolic acid, acetic acid, mercapto, 2-mercaptoacetic acid, sulfanylacetic acid, thiovanic acid, mercaptoessigsaeure, thioglycollic acid, glycolic acid, thio
• InChI Key: CWERGRDVMFNCDR-UHFFFAOYSA-N
• IUPAC Name: 2-sulfanylacetic acid
• PubChem CID: 1133
• Formula Weight: 92.11
• Physical Form: Liquid

Safety and Handling

GHS H Statement
H301-H311-H331-H314

P260-P264b-P270-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P501c

H301+H311+H331-H314-H335

missing translation for 'dotInformation' : Transport Hazard Class: 8; Packing Group: II; Proper Shipping Name: THIOGLYCOLIC ACID

missing translation for 'einecsNumber' : 200-677-4

missing translation for 'rtecsNumber' : AI5950000

missing translation for 'tsca' : Yes

Recommended Storage : Ambient temperatures

Product Identifier

• Mercaptoacetic acid

Signal Word

• Danger

Hazard Category

• Acute toxicity Category 3
• Acute toxicity Category 4
• Serious eye damage/eye irritation Category 1
• Skin corrosion/irritation Category 1 B
• Skin sensitiser Category 1

Hazard Statement

• H301-Toxic if swallowed.
• H311-Toxic in contact with skin.
• H314-Causes severe skin burns and eye damage.
• H317-May cause an allergic skin reaction.
• H318-Causes serious eye damage.
• H332-Harmful if inhaled.

Precautionary Statement

• P280-Wear protective gloves/protective clothing/eye protection/face protection.
• P301+P330+P331-IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
• P303+P361+P353-IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/ shower.
• P304+P340-IF INHALED: Remove person to fresh air and keep comfortable for breathing.
• P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P310-Immediately call a POISON CENTER/doctor/.

Supplemental information

• MIXTURE LIST-Contains : Thioglycolic acid

RUO – Research Use Only