2,5-Bis(octyldithio)-1,3,4-thiadiazole CAS NO 13539-13-4

Who is Origin and Major Production Regions for 2,5-Bis(octyldithio)-1,3,4-thiadiazole  
CAS No. 13539-13-4 ?

It is coming from China: Major producers in Hunan SLQ Materials Technology co.,ltd

2,5-Bis(octyldithio)-1,3,4-thiadiazole

CAS No. 13539-13-4

Original :China 

Product features:

Ultra low ash, low phosphorus, low sulfur, and post-treatment protection

Low conductivity, insulation, copper aluminum corrosion resistance, low friction, high speed stability

Sulfur free, ash free, hydrogen embrittlement resistant, high temperature resistant.

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Product Analysis

2,5-Bis(octyldithio)-1,3,4-thiadiazole

CAS No.: 13539-13-4

1. Product Identification

- Chemical Name: 2,5-Bis(octyldithio)-1,3,4-thiadiazole
- CAS No.: 13539-13-4
- Molecular Formula: C₁₈H₃₄N₂S₅
- Molecular Weight: 438.35 g/mol
- Application: Lubricant additive, metal deactivator, copper corrosion inhibitor, antioxidant and antiwear agent



2. Physical and Chemical Properties

- Appearance: Light yellow to amber viscous liquid
- Density (20 °C): 1.05 – 1.15 g/cm³
- Flash Point (open cup): ≥ 130 °C
- Moisture: ≤ 0.10%
- Ash Content: ≤ 0.10%
- Sulfur Content: 35.0 – 38.0%
- Nitrogen Content: 6.0 – 7.0%
- Copper Corrosion Test (100 °C, 3 h): Grade 1a
- Insoluble Impurities: ≤ 0.05%
- Purity (HPLC): ≥ 95.0%

Superior Metal Deactivator for Optimal Lubrication & Protection

A metal deactivator (passivator) is a critical lubricant additive that neutralizes metal-catalyzed oxidation & corrosion, delivering longer oil life, better equipment protection, and stable lubrication

Core Mechanisms

Film Formation: Creates a dense inert barrier on metal (especially copper/alloys) to block active sulfur, acids, and radicals

Chelation: Binds metal ions (Cu²⁺, Fe³⁺) into stable complexes, eliminating their catalytic oxidation effect

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Synergy: Works with antioxidants (e.g., Irganox) to boost oxidative stability

.

Top-Performing Types

Benzotriazole (BTA) / Tolyltriazole (TTA) Derivatives

Oil-soluble, ashless, low-dose (0.01–0.05%)

.

Salen-Type Complexes

For aviation/jet fuels; neutralizes trace copper (0.1 ppm+).

Key Benefits

✅ Extend oil drain intervals✅ Prevent copper blackening & corrosion✅ Reduce sludge/varnish✅ Lower maintenance costs✅ Compatible with most lubricant additives

Typical Applications

Engine oils, gear oils, hydraulic fluids

Turbine oils, transformer oils, metalworking fluids

Greases, aviation fuels

The Origin and Major Production Regions for CAS No. 13539-13-4

- China: Major producers in Hunan SLQ Materials Technology co.,ltd

We recommend large of Supplier and Manufacturer :

Hunan SLQ Materials Technology co.,ltd

Email:info@hnjd-tech.com
https://www.fueloil-additive.com/