(outside the U.S. )

(outside the U.S. )

CHEMTREC: (outside the U.S. )SECTION 2. HAZARDS IDENTIFICATION

Emergency Overview

The thermal decomposition vapours of fluorinated polymers may cause polymer fume fever with flu-like

symptoms in humans, especially when smoking contaminated tobacco.

Potential Health Effects

Skin

Tetrafluoroethyle

ne/perfluoroalkylv

inylether

copolymer

: Dust may cause: Discomfort, itching, redness, or swelling. Eyes

copolymer : Dust may cause: tearing, Redness, Discomfort.

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Inhalation

copolymer : Dust may cause: Respiratory tract irritation The thermal decomposition vapours of fluorinated polymers may cause polymer fume fever with flu-like symptoms in humans, especially when smoking contaminated tobacco.

Symptoms usually appear after several hours and resolve within 1 to 2

days.

Teflon® PFA 450HP

Perfluoroalkoxy

DuPont Fluoropolymers

产品说明：

For inventory control purposes product name may be followed by an X.

Products labeled PFA 450HP and PFA 450HP X are e and all information in this document is applicable to both.

Typical Application
Applications for DuPont™ Teflon ® PFA 450HP include tubing, chemical linings for pipes, valves, and fittings used in the chemical processing industries, unsupported pipe linings for the production of ultra-pure chemicals, semiconductor components, and fluid handling components for high-performance chemical delivery systems where purity in the parts-per-billion range is needed. Teflon ® PFA 450HP is preferred in applications where extended service is required in hostile environments involving chemical, thermal, and mechanical stress.

Description
DuPont™ Teflon ® PFA 450HP is a special purpose fluoroplastic resin available in pellet form. This resin is a chemically modified form of Teflon ® PFA 350 that combines many of the benefits of the parent resin (highest resistance to environmental stress-cracking with a typical MIT folding endurance of 500,000*) with several additional benefits including enhanced purity, improved thermal stability while processing, and chemical inertness; for example, to ozonated fluids. Table 1 shows the typical property data for Teflon ® PFA 450HP.

Teflon ® PFA 450HP is a relatively low melt flow rate (typical MFR of 2), premium resin with the lowest level of extractables designed to meet ultra-high purity re An enhanced resistance to environmental stress-cracking makes Teflon ® PFA 450HP a preferred resin when extended service is required in hostile environments involving chemical, thermal, and mechanical stress. Additionally, the enhanced purity of Teflon ® PFA 450 HP makes it suitable for applications that require improved color, lower extractable fluorides, and freedom from other foreign materials. This product contains no additives and is designed for hostile chemical environments where purity in the parts-per-billion range is needed. Examples are in semiconductor manufacture, fluid handling systems for industry or life sciences, and instrumentation for precise measurements of fluid systems. Compared to other thermoplastics, the high melt strength and thermal stability of Teflon ® PFA 450HP can be used to improve processing rates, combining the processing ease of conventional thermoplastics with many properties similar to those of polytetrafluoroethylene.

Properly processed products made from neat Teflon ® PFA 450HP resin provide the superior properties characteristic of fluoroplastic resins: chemical inertness, exceptional dielectric properties, heat resistance, toughness and flexibility, low coefficient of friction, non-stick characteristics, negligible moisture absorption, low flammability, performance at temperature extremes, and excellent weather resistance.

In a flame situation, products of Teflon ® PFA 450HP resist ignition and do not promote flame spread. When ignited by flame from other sources, their contribution of heat is very small and added at a slow rate with very little smoke.

Teflon ® PFA 450HP meets the re of ASTM D3307, Type II

物性信息：

Fire and Explosion Hazard :Hazardous thermal decomposition products:

acid fluorides

Fluorinated compounds

Hydrogen fluoride

Carbon monoxide

Suitable extinguishing media :Carbon dioxide (CO2), Dry powder, Foam, Water

Firefighting Instructions :In the event of fire, wear self-contained breathing apparatus.  Wear suitable

protective e  Wear neoprene gloves during cleaning up work after a

fire.

Protect from hydrogen fluoride fumes which react with water to form

hydrofluoric acid.