

share
Tri-o-Tolylthiophosphate CAS NO 631-45-8
Unit Price:
CAS No.:631-45-8
Grade:Pharmacy Grade
Content:99.9%
Brand:Customizable
Packaging:Customizable
Description
Tri-o-Tolylthiophosphate is a specialized organophosphorus compound widely utilized as a high-performance chemical intermediate and additive. Its primary value lies in its role as a key building block for synthesizing advanced materials and as a functional additive in polymer and lubricant systems. This product is essential for manufacturers in the polymer, specialty chemical, and lubricant industries seeking to enhance product performance and stability.
Application
- As a stabilizer and antioxidant in polymer and plastic formulations to prevent thermal degradation.
- As a key chemical intermediate in the synthesis of more complex organophosphorus compounds for agrochemicals and flame retardants.
- As a functional additive in industrial lubricants and hydraulic fluids to improve anti-wear and extreme pressure properties.
- In the research and development of novel materials for electronics and coatings.
- As a vulcanization agent or accelerator in specific elastomer and rubber processing applications.
Basic Information
| Product Name | Tri-o-Tolylthiophosphate |
| CAS No. | 631-45-8 |
| Molecular Formula | C21H21O3PS |
| Molecular Weight | 384.43 g/mol |
| Synonyms | Tris(2-methylphenyl) phosphorothioate; Phosphorothioic acid, tris(2-methylphenyl) ester; Tri-o-cresyl thiophosphate; o-Tolyl thiophosphate; TOTP; Tris(o-tolyl) thiophosphate; Tri-ortho-tolyl thiophosphate; 2-Methylphenyl thiophosphate |
| EINECS | 211-161-1 |
Quality Control
Our Tri-o-Tolylthiophosphate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee consistency and traceability for our global B2B clients.
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 and heat sources.
Specification
| Item | Specification |
|---|---|
| Appearance | Colorless to pale yellow liquid |
| Identification (IR) | Conforms |
| Assay (HPLC) | ≥ 98.0% |
| Density (20°C) | 1.18 - 1.22 g/cm³ |
| Refractive Index (n20D) | 1.580 - 1.590 |
| Water Content (KF) | ≤ 0.2% |
Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.
Hot Related Products


Methylphosphonic Acid CAS NO 993-13-5


Triethyl Phosphate CAS NO 78-40-0


Ethyl (2,4,6-Trimethylbenzoyl) Phenylphosphinate CAS NO 84434-11-7


Diphenyl(2,4,6-Trimethylbenzoyl)Phosphine Oxide CAS NO 75980-60-8


3-Methyl-1-Phenyl-2-Phospholene 1-Oxide CAS NO 707-61-9


Ethylphosphonic Acid CAS NO 6779-09-5


2-Hydroxyethyl Methacrylate Phosphate CAS NO 52628-03-2


[[(2-Hydroxyethyl)Imino]Bis(Methylene)]Bisphosphonic Acid CAS NO 5995-42-6


Tridecyl Acid Phosphate CAS NO 5116-94-9


n-Hexylphosphonic Acid CAS NO 4721-24-8


Di-o-Tolylchlorophosphine CAS NO 36042-94-1


cis-Propenylphosphonic Acid CAS NO 25383-06-6


Trihexylphosphine Oxide CAS NO 3084-48-8


1,1'-Binaphthyl-2,2'-Diyl Hydrogenphosphate CAS NO 35193-63-6


Bis(2-Ethylhexyl) Phosphate CAS NO 298-07-7


Phosphoric Acid Tri-n-Amyl Ester CAS NO 2528-38-3


3-[Bis(2-Ethylhexyl)Phosphorylmethyl]Heptane CAS NO 2785-32-2


Tetra-n-Octylphosphonium Bromide CAS NO 23906-97-0


Di-tert-Butyl Chloromethyl Phosphate CAS NO 229625-50-7


Ethyl Methylphosphonic Acid CAS NO 1832-53-7
Why choose US
Trusted Manufacturer
With our own production facilities, we ensure consistent quality, reliable supply, and full traceability.
Rigorous Quality Assurance
Each batch undergoes strict QC, accompanied by COA, MSDS, and full compliance with international standards.
Advanced R&D Expertise
Our in-house lab drives process innovation, new product development, and tailored synthesis solutions.





