Description

Ammonium 3-Mercaptopropionate is the ammonium salt of 3-mercaptopropionic acid, a versatile sulfur-containing organic compound. This chemical is a critical intermediate and reagent, valued for its ability to introduce thiol functional groups into molecules, enabling applications in polymer modification, pharmaceutical synthesis, and biochemical research. It is essential for manufacturers and R&D laboratories in the polymer, life sciences, and specialty chemical industries seeking to develop or produce advanced materials and active compounds.

Application

• Polymer Industry: Acts as a chain transfer agent (CTA) or modifier in the synthesis of polymers and resins, including acrylics, to control molecular weight and introduce functional end-groups.
• Pharmaceutical Intermediates: Serves as a key building block for synthesizing active pharmaceutical ingredients (APIs) and prodrugs that contain thiol or disulfide linkages.
• Bioconjugation & Protein Chemistry: Used for the modification of proteins, peptides, and antibodies via thiol-maleimide or disulfide bond formation for drug delivery systems and diagnostic reagents.
• Cosmetic & Personal Care: Employed in the formulation of hair waving/straightening agents and certain skin care products where thiol chemistry is required.
• Chemical Synthesis: A versatile reagent for organic synthesis, including nucleophilic addition reactions and the preparation of other mercapto derivatives.
• Adhesive & Sealant Formulation: Functions as a cross-linking agent or adhesion promoter in specific specialty adhesive systems.
• Research & Development: A valuable tool compound in academic and industrial R&D for exploring new synthetic pathways and material properties.
• Water Treatment Chemicals: Potential use as a precursor or intermediate in the synthesis of specialty chemicals for water treatment processes.

Basic Information

Product Name	Ammonium 3-Mercaptopropionate
CAS No.	70776-74-8
Molecular Formula	C₃H₉NO₂S
Molecular Weight	123.17 g/mol
Synonyms	3-Mercaptopropionic Acid Ammonium Salt; Ammonium 3-Mercaptopropanoate; Ammonium β-Mercaptopropionate; 3-Thiopropionic Acid Ammonium Salt; Ammonium Salt of 3-Mercaptopropionic Acid; MAPA (Ammonium Salt); Ammonium Thioglycolate Propionate
EINECS	Contact for details

Quality Control

Our Ammonium 3-Mercaptopropionate is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay, impurity profile, and physical characteristics is provided with every shipment to guarantee it meets your specific application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and easily oxidized; therefore, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen) after opening to maintain stability and purity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 3.0%
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.