Description

Thiopropionic Acid is a versatile sulfur-containing organic acid with the CAS registry number 1892-31-5. This compound is valued for its role as a key intermediate and functional additive in advanced chemical synthesis. It is essential for manufacturers in the pharmaceutical, polymer, and specialty chemical industries seeking to introduce thioether or carboxylic acid functionalities into their products.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs, particularly those requiring thioether linkages.
• Polymer Additive: Acts as a stabilizer, chain transfer agent, or cross-linking precursor in the production of specialty plastics and rubbers.
• Lubricant & Fuel Additive: Serves as a precursor for extreme pressure (EP) additives and anti-wear agents in industrial lubricants and fuel formulations.
• Chemical Synthesis: A crucial building block for synthesizing more complex organosulfur compounds, including thioesters and thioamides.
• Agrochemical Production: Employed in the manufacture of certain herbicides and fungicides where the thiol or acid group is integral to biological activity.
• Flavor & Fragrance Industry: Used as an intermediate for creating sulfur-containing aroma chemicals that impart savory or roasted notes.

Basic Information

Product Name	Thiopropionic Acid
CAS No.	1892-31-5
Molecular Formula	C3H6O2S
Molecular Weight	106.14 g/mol
Synonyms	3-Mercaptopropionic Acid; 3-Thiopropanoic Acid; β-Mercaptopropionic Acid; 3-Sulfanylpropanoic Acid; USAF EK-1890; NSC 4715; Propanoic acid, 3-mercapto-
EINECS	217-571-6

Quality Control

Our Thiopropionic Acid is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including assay by titration, impurity profiling via HPLC, and identity confirmation (IR) to ensure it meets exacting standards. Certificates of Analysis (COA) documenting purity, physical properties, and safety data are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area at 15-25°C. This product is easily oxidized and highly volatile; it is recommended to store under an inert atmosphere (e.g., nitrogen) and keep containers tightly sealed when not in use to minimize oxidation and evaporation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
Water Content (KF)	≤ 0.5 %
Refractive Index (20°C)	1.491 - 1.495
Specific Gravity (20°C)	1.215 - 1.225

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