Description

Zinc O,O,O',O'-Tetrabutyl Bis(Phosphorodithioate) is an organophosphorus compound widely recognized as a high-performance lubricant additive and antioxidant. This chemical is valued for its ability to significantly reduce friction, wear, and oxidation in industrial fluids, thereby extending equipment life and operational efficiency. It is primarily needed by formulators and manufacturers in the lubricants, metalworking fluids, and industrial grease sectors seeking advanced anti-wear protection.

Application

• Primary anti-wear (AW) and extreme pressure (EP) additive in industrial lubricants and hydraulic fluids.
• Key component in metalworking fluids and cutting oils to protect tools and workpieces.
• Multifunctional additive in gear oils and greases for heavy-duty machinery.
• Used as an antioxidant to inhibit oil degradation and sludge formation.
• Friction modifier in automotive and industrial engine oils.
• Additive for corrosion inhibition in various fluid formulations.

Basic Information

Product Name	Zinc O,O,O',O'-Tetrabutyl Bis(Phosphorodithioate)
CAS No.	6990-43-8
Molecular Formula	C32H68O4P2S4Zn
Molecular Weight	788.4 g/mol
Synonyms	Zinc Dibutyldithiophosphate; Zinc O,O'-Dibutyl Phosphorodithioate; ZDDP (Zinc Dialkyldithiophosphate) - Butyl variant; Zinc Bis(O,O'-dibutylphosphorodithioate); Butyl ZDDP; Lubrizol 1395 (example trade name); Vanlube 672 (example trade name); Antiwear Additive ZDDP
EINECS	230-277-1

Quality Control

Our production of Zinc O,O,O',O'-Tetrabutyl Bis(Phosphorodithioate) adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot undergoes rigorous testing, including assay, viscosity, and elemental analysis, to meet precise industry specifications. A comprehensive Certificate of Analysis (COA) detailing all quality parameters is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Clear, amber to light yellow liquid
Identification (IR)	Conforms
Assay (Zn content)	7.8 - 8.5 %
Phosphorus Content	7.5 - 8.2 %
Sulfur Content	15.5 - 16.5 %
Density (20°C)	1.10 - 1.20 g/mL
Kinematic Viscosity (40°C)	Report
Acidity (as H3PO4)	≤ 0.5 %
Water Content	≤ 0.1 %

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