Description

(2-Hydroxyethyl)Ammonium 2-Mercaptopropionate is a versatile organic salt that serves as a key intermediate and functional additive in advanced chemical synthesis. Its value lies in its unique combination of a hydroxyl group, a thiol (mercapto) group, and a carboxylate moiety, enabling its use as a reducing agent, stabilizer, and building block. This compound is particularly needed by manufacturers in the pharmaceutical, polymer, and personal care industries for applications requiring controlled reactivity and stabilization.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring thiol or disulfide linkages.
• Polymer Additive: Acts as a chain transfer agent (CTA) or stabilizer in radical polymerization processes to control molecular weight and prevent premature degradation.
• Hair Care & Cosmetic Formulations: Serves as a reducing agent in permanent hair waving/straightening solutions and as a stabilizer in formulations containing sensitive active ingredients.
• Chemical Synthesis: Functions as a versatile building block for introducing the 2-mercaptopropionate moiety into more complex molecules.
• Antioxidant/Stabilizer Precursor: Used in the production of antioxidants for rubber, plastics, and lubricants due to its thiol functionality.
• Bioconjugation Reagent: Employed in biochemical research for modifying proteins and peptides via thiol-reactive chemistry.

Basic Information

Product Name	(2-Hydroxyethyl)Ammonium 2-Mercaptopropionate
CAS No.	54266-38-5
Molecular Formula	C5H13NO3S
Molecular Weight	167.22 g/mol
Synonyms	2-Mercaptopropionic Acid 2-Hydroxyethylammonium Salt; 2-Hydroxyethylammonium 2-Mercaptopropionate; 2-Mercaptopropionic Acid Monoethanolamine Salt; Monoethanolamine 2-Mercaptopropionate; Thiolactic Acid Ethanolamine Salt; Ethanolammonium 2-Mercaptopropionate; MEA 2-Mercaptopropionate; 2-Sulfanylpropanoic Acid Compound with 2-Aminoethan-1-ol (1:1)
EINECS	Contact for details

Quality Control

Our (2-Hydroxyethyl)Ammonium 2-Mercaptopropionate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and physical characteristics are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) and easily oxidized nature, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) after opening to maintain stability and shelf life.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
pH (10% solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.