Description

3,3'-Thiodipropionic Acid is a sulfur-containing organic compound widely recognized as a versatile intermediate and antioxidant. Its primary commercial value lies in its ability to act as a stabilizer and chain transfer agent in polymer synthesis, preventing premature degradation. This product is essential for manufacturers in the plastics, rubber, and personal care industries seeking to enhance product longevity and performance under oxidative stress.

Application

• Primary antioxidant and stabilizer in the production of polyolefins (e.g., polyethylene, polypropylene).
• Intermediate for synthesizing light stabilizers and other specialty additives for polymers.
• Stabilizing agent in synthetic fibers and engineering plastics to improve heat resistance.
• Component in the formulation of lubricant and grease additives to prevent oxidation.
• Used in the synthesis of certain pharmaceuticals and agrochemicals.
• Potential applications in personal care products as a stabilizing agent.

Basic Information

Product Name	3,3'-Thiodipropionic Acid
CAS No.	111-17-1
Molecular Formula	C6H10O4S
Molecular Weight	178.21 g/mol
Synonyms	Thiodipropionic Acid; 3,3'-Thiobis(propanoic acid); Bis(2-carboxyethyl) sulfide; Dithiodipropionic Acid; Propanoic acid, 3,3'-thiobis-; TDPA; Antioxidant TDP; β,β'-Thiodipropionic Acid
EINECS	203-841-3

Quality Control

Our 3,3'-Thiodipropionic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets the required specifications for purity and performance. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and heat sources.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0 %
Melting Point	128 - 132 °C
Loss on Drying	≤ 0.5 %
Sulfur Content	17.8 - 18.2 %
Heavy Metals (as Pb)	≤ 10 ppm

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