Description

1,1,2,3,4,4,4-Heptafluoro-3-(trifluoromethyl)but-1-ene is a high-purity, highly volatile fluorinated olefin, also known by its CAS number 21581-82-8. This specialty chemical is valued for its unique perfluorinated structure, which provides exceptional chemical and thermal stability, making it a critical intermediate in advanced manufacturing. It is primarily sought by R&D and production teams in the pharmaceutical, agrochemical, and specialty polymer industries for synthesizing novel compounds and high-performance materials.

Application

• Pharmaceutical Intermediate: Serves as a key building block for synthesizing active pharmaceutical ingredients (APIs) with enhanced metabolic stability and bioavailability.
• Agrochemical Synthesis: Used in the production of advanced herbicides, pesticides, and fungicides, where its fluorine content improves efficacy and environmental persistence.
• Fluoropolymer & Elastomer Production: Acts as a monomer or modifier in the synthesis of high-performance fluoropolymers, offering superior resistance to heat, chemicals, and weathering.
• Refrigerant & Propellant Formulation: Employed in the development of next-generation, low-global-warming-potential (GWP) refrigerants, blowing agents, and aerosol propellants.
• Electronic Chemicals: Used in plasma etching and cleaning processes in semiconductor manufacturing due to its volatile nature and fluorine content.
• Specialty Solvents & Reagents: Functions as a selective fluorination reagent or solvent in organic synthesis and material science research.

Basic Information

Product Name	1,1,2,3,4,4,4-Heptafluoro-3-(trifluoromethyl)but-1-ene
CAS No.	21581-82-8
Molecular Formula	C5HF10
Molecular Weight	266.04 g/mol
Synonyms	Perfluoro(3-methylbut-1-ene); 3-(Trifluoromethyl)-1,1,2,3,4,4,4-heptafluoro-1-butene; 1-Butene, 1,1,2,3,4,4,4-heptafluoro-3-(trifluoromethyl)-; HFO-1438ezy; FEA-1100; R-1438ezy; 3-(Trifluoromethyl)heptafluorobut-1-ene
EINECS	244-466-4

Quality Control

Our 1,1,2,3,4,4,4-Heptafluoro-3-(trifluoromethyl)but-1-ene is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including GC, GC-MS, and NMR, to ensure high purity and consistency for your critical applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly volatile nature, store in a cool, well-ventilated area away from heat sources and open flames. Recommended storage temperature is 2-8°C (36-46°F) to minimize evaporation and maintain product integrity. Keep container tightly sealed when not in use.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.05%
Non-volatile Residue	≤ 0.01%

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