Description

Propane, 1,3-Diisocyanato- is a versatile aliphatic diisocyanate monomer, a key building block in the synthesis of high-performance polymers. This compound is essential for creating materials with excellent light stability, chemical resistance, and mechanical properties. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing specialty polyurethanes and polyurea formulations.

Application

• Light-Stable Polyurethane Coatings: A critical raw material for automotive clear coats, industrial finishes, and exterior coatings where resistance to yellowing from UV exposure is paramount.
• High-Performance Elastomers: Used in the production of durable elastomers for applications such as rollers, gaskets, and seals that require flexibility and chemical resistance.
• Adhesives and Sealants: Serves as a key component in formulating advanced adhesives and sealants with strong bonding strength and weatherability.
• Polyurea Spray Coatings: An essential reactant for fast-curing polyurea systems used in truck bed liners, tank linings, and waterproofing membranes.
• Specialty Cross-Linking Agent: Employed to modify and cross-link polymers, enhancing their thermal and mechanical properties for niche industrial applications.
• Chemical Intermediate: Used in organic synthesis to introduce urethane and urea linkages into more complex molecules for research and specialty chemical production.

Basic Information

Product Name	Propane, 1,3-Diisocyanato-
CAS No.	3753-93-3
Molecular Formula	C5H6N2O2
Molecular Weight	126.11 g/mol
Synonyms	1,3-Diisocyanatopropane; Trimethylene Diisocyanate; Propane-1,3-diyl diisocyanate; 1,3-Propylene Diisocyanate; PDI; NSC 8641; Desmodur T; Isocyanic acid, trimethylene ester
EINECS	223-158-7

Quality Control

Our Propane, 1,3-Diisocyanato- is manufactured under stringent quality management systems. Each batch undergoes rigorous analytical testing, including assay by titration and impurity profiling, to ensure it meets precise specifications for diisocyanate content and purity. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent reaction with atmospheric moisture. Recommended storage temperature is 2-8°C for extended shelf life.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (NCO Content)	≥ 99.0 %
Purity (GC)	≥ 98.5 %
Hydrolyzable Chloride	≤ 0.01 %
Color (APHA)	≤ 50
Specific Gravity (20°C)	1.10 - 1.12

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