Description

(2-Hydroxyethyl)Ammonium 3-Mercaptopropionate is a versatile organic salt that combines the properties of a thiol and an amino alcohol. This compound is valued for its role as a key intermediate and functional additive in advanced synthesis and material science. It is particularly sought after by manufacturers in the pharmaceutical, polymer, and specialty chemical industries for applications requiring controlled reactivity and specific functional group chemistry.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs, particularly where thiol or carboxylate functionalities are required.
• Polymer Modification & Cross-linking Agent: Acts as a chain transfer agent or cross-linker in the production of specialty polymers, including acrylics and polyurethanes, to modify properties like flexibility and thermal stability.
• Hair Care & Cosmetic Formulations: Serves as a key ingredient in permanent wave solutions and hair straightening products due to its ability to break and reform disulfide bonds in keratin.
• Bioconjugation & Protein Chemistry: Utilized for modifying proteins, peptides, and antibodies via thiol-reactive chemistry for research, diagnostics, and therapeutic applications.
• Corrosion Inhibitor Precursor: Employed in the formulation of coatings and additives for metal surface treatment, providing protective layers.
• Chemical Synthesis Reagent: Functions as a building block for synthesizing more complex molecules like heterocycles, ligands, and chelating agents.

Basic Information

Product Name	(2-Hydroxyethyl)Ammonium 3-Mercaptopropionate
CAS No.	70776-65-7
Molecular Formula	C5H13NO3S
Molecular Weight	167.23 g/mol
Synonyms	2-Hydroxyethylammonium 3-mercaptopropionate; 3-Mercaptopropionic acid 2-hydroxyethylamine salt; 3-Mercaptopropionic acid monoethanolamine salt; Ethanolamine 3-mercaptopropionate; MEA 3-mercaptopropionate; Thioglycolic acid amine salt (related class); Amino alcohol thiolate; Contact for EINECS details.

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards and customer-specific requirements. Each batch is analyzed using modern analytical techniques, including HPLC, titration, and spectroscopic methods, to confirm identity, purity, and the absence of critical impurities. Certificates of Analysis (COA) are available upon request, providing full transparency on all specification parameters.

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) for long-term stability. Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
pH (10% solution)	6.0 - 8.0
Residual Solvents (GC)	Meets ICH guidelines

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