Description

Di-o-Tolythiourea is a specialized organic thiourea derivative, recognized for its role as a versatile chemical intermediate and stabilizer. Its value lies in its ability to act as a metal deactivator and antioxidant, protecting materials from degradation in demanding industrial environments. This compound is essential for manufacturers in the polymer, rubber, and specialty chemical sectors seeking to enhance product longevity and performance under oxidative stress.

Application

• Polymer Stabilizer: Used as an antioxidant and metal deactivator in polyolefins and other polymers to prevent thermal and oxidative degradation during processing and service life.
• Rubber Industry: Functions as a non-staining antioxidant and anti-ozonant in synthetic rubber formulations, including SBR and NBR, to extend product durability.
• Corrosion Inhibitor: Employed in lubricant and fuel additive packages to chelate metal ions and prevent catalytic oxidation and corrosion.
• Chemical Synthesis: Serves as a key intermediate in the production of pharmaceuticals, agrochemicals, and dyes, particularly in reactions involving thiocarbonyl groups.
• Photographic Industry: Acts as a stabilizer and antifogging agent in certain photographic developer solutions.
• Copper Plating Baths: Utilized as an additive in electroplating solutions to improve the brightness and uniformity of copper deposits.

Basic Information

Product Name	Di-o-Tolythiourea
CAS No.	137-97-3
Molecular Formula	C₁₅H₁₆N₂S
Molecular Weight	256.36 g/mol
Synonyms	1,3-Di-o-tolylthiourea; Di-ortho-tolylthiourea; N,N'-Di-o-tolylthiourea; 1,3-Di(2-methylphenyl)thiourea; o,o'-Ditolylthiourea; DOTU; Antioxidant DMTU; Vulkanox DMTU; CAS 137-97-3
EINECS	205-304-9

Quality Control

Our Di-o-Tolythiourea is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, melting point determination, and impurity profiling, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) documenting purity, physical properties, and test results are provided with every shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at ambient temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and heat sources. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	148 - 152 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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