NYC-WTC_000195937

NYC 9/11 Public Portal Document

MSDS Number: 2008FR Page 4 of?

Safeguards (Personnel)

NOTE: Review FIRE FIGHTING MEASURES and HANDLING (PERSONNEL) sections before proceeding with clean-up. Use appropriate PERSONAL PROTECTIVE EQUIPMENT during clean-up.

Accidental Release Measures

Ventilate area, especially low or enclosed places where heavy vapors might collect. Remove open flames. Use self-contained breathing apparatus (SCBA) for large spills or releases.

HANDLING AND STORAGE Handling (Personnel)

Use with sufficient ventilation to keep employee exposure below recommended limits. "FREON" 22 should not be mixed with air for leak testing. In general, it should not be used or allowed to be present with high concentrations of air above atmospheric pressure. Contact with chlorine or other strong oxidizing agents should also be avoided.

Storage

Clean, dry area. Do not heat above 52 C (125 F).

EXPOSURE CONTROLS/PERSONAL PROTECTION Engineering Controls

Normal ventilation for standard manufacturing procedures is generally adequate. Local exhaust should be used when large amounts are released. Mechanical ventilation should be used in low or enclosed places.

Personal Protective Equipment

Impervious gloves and chemical splash goggles should be used when handling liquid. Under normal manufacturing conditions, no respiratory protection is required when using this product. Self-contained breathing apparatus (SCBA) is required if a large release occurs.

# Exposure Guidelines

Exposure Limits "FREON" 22 PEL (OSHA) : None Established TLV (ACGIH) : 1,000 ppm, 3,540 mg/mS, 8 Hr. TWA, A4 AEL * (DuPont) : None Established

* ML is DuPont's Acceptable Exposure Limit. Where governmentally inposed occupational exposure limits which are lower than the ZvEL are in effect, such limits shall take precedence.

http;//www.dupont.com/msds/40_37_2008fr.html 12/12/2001

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NYC-WTC_000195940