Product ID:DYMEL 125
MSDS Date:08/10/1992
FSC:6830
NIIN:00N044639
MSDS Number: BTJGF

E I DUPONT DE NEMOURS & CO

1007 MARKET ST
WILMINGTON, DE 19898
US

Emergency Phone: 800-441-3637;800-424-9300(CHEMTREC)

Info Phone: 800-441-9442

Cage: 0ERJ7

E.I. DUPONT DE NEMOURS & CO

WILMINGTON, DE 19898 US

Telephone: 800-441-7515;800-441-9442

Cage: 18873

PENTAFLUOROETHANE; (ETHANE, PENTAFLUORO-)(HFC-125)

CAS: 354-33-6

Fraction By Weight: 100%

OSHA PEL N/K

ACGIH TLV: N/K

BE USED WITH SPECIAL CAUTION IN SITUATIONS OF

RTECS: 9999999ZZ

APPROVED SCBA IF LARGE RELEASE OCCURS.

RTECS: 9999999ZZ

RELEASED. MECHNICAL VENTILATION SHOULD BE USED IN LOW

RTECS: 9999999ZZ

NOT BE MIXED WITH AIR FOR LEAK TESTING OR USED

RTECS: 9999999ZZ

PRESSURE. CONTACT WITH CHLORINE OR OTHER STRONG

RTECS: 9999999ZZ

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:INHAL OF HIGH CONCS OF VAP IS HARMFUL
& MAY CAUSE HEART IRREGULARITIES, UNCON OR DEATH. INTENTIONAL
MISUSE OR DELIBERATE INHAL MAY CAUSE DEATH WITHOUT WARNING. VAP
REDUCES OXYGEN AVAIL FOR BRTHG AND I S HVR/AIR. LIQ CNTCT CAN CAUSE
FROSTBITE. DECOMP PRODS ARE HAZ. HUMAN HLTH EFTS: HIGH INHAL OVERXP
MAY (EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:HLTH HAZ: CAUSE RESP EFTS WITH COUGH &
SHORTNESS OF BREATH. SIMILAR COMPOUNDS MAKE THE HEART MORE
SENSITIVE TO ADRENALIN WHICH COULD RESULT IN LIFE-THREATENING HEART
DISTURBANCES (ARRHYTHIAS).
Medical Cond Aggravated by Exposure:INDIVIDUALS WITH PREEXISTING
DISEASES OF THE CNS OR CARDIOVASCULAR SYSTEM MAY HAVE INCREASED
SUSCEPTIBILITY TO THE TOXICITY OF EXCESSIVE EXPOSURE.

First Aid:INHAL: IF HIGH CONCS ARE INHALEED, IMMED REMOVE TO FRESH AIR.
KEEP PERSOM CALM. IF NOT BRTHG, GIVE ARTF RESP. IF BRTHG IS DFCLT,
GIVE OXYGEN. CALL MD. SKIN: IMMED FLUSH SKIN WITH PLENTY OF WATER
FOR @ LST 15 MIN. TREAT FOR FROSTBITE IF NECESSARY BY GENTLY
WARMING AFFECTED AREA. CALL MD IF IRRIT PRESENT. EYE: IMMED FLUSH
EYES W/PLENTY OF WATER (SUPP DATA)

Flash Point Method:TOC
Flash Point:WILL NOT BURN
Extinguishing Media:AS APPROPRIATE FOR COMBUSTIBLE IN AREA.
Fire Fighting Procedures:COOL CYLINDERS WITH WATER SPRAY. USE
NIOSH/MSHA APPROVED PRESSURE DEMAND SCBA & FULL PROTECTIVE
EQUIPMENT .
Unusual Fire/Explosion Hazard:CYLINDERS MAY RUPTURE UNDER FIRE
CONDITIONS. DECOMPOSITION MAY OCCUR.

Spill Release Procedures:NOTE:REVIEW FIRE AND EXPLOSION HAZS & SFTY
PREC BEFORE PROCEEDING W/CLEAN UP. USE APPROP PERSONAL PROT EQUIP
DURING CLEAN UP. VENT AREA, ESPECIALLY LOW OR ENCLOSED PLACES WHERE
HVY VAPS MIGHT COLLECT. REMOVE OPEN FLAMES. USE NIOSH/MSHA (ING 3)
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:CLEAN, DRY AREA. DO NOT HEAT ABOVE 52C
(125F).
Other Precautions:AVOID BRTHG HIGH CONCS OF VAPOR. USE WITH SUFFICIENT
VENT TO KEEP EMPLOYEE EXPOSURE BELOW RECOMMENDED LIMITS. AVOID
CONTACT OF LIQUID WITH SKIN AND EYES.

Respiratory Protection:NIOSH/MSHA APPROVED SCBA IS REQUIRED IF A LARGE
RELEASE OCCURS.
Ventilation:NORMAL VENT FOR STD MFG PROCEDURES IS GENERALLY ADEQUATE.
LOCAL EXHAUST SHOULD BE USED WHEN LARGE AMOUNTS ARE(ING 4)
Protective Gloves:IMPERVIOUS GLOVES.
Eye Protection:ANSI APPVD CHEMICAL SPLASH GOGGLES (FP N
Other Protective Equipment:NONE SPECIFIED BY MANUFACTURER.
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
DECOMP PRODS: FORMING HYDROFLUORIC ACID AND POSSIBLY CARBONYL FLUORIDE.
FIRST AID PROC: FOR @ LST 15 MIN. CALL MD. INGEST: INGEST IS NOT
CONSDIERED A POTENTIAL ROUTE OF EXPOSURE. NOTE TO MD: BECAUSE O F
POSS DISTURBANCES OF CARDIAC RHYTHM, CATECHOLAMINE DRUGS, SUCH AS
EPINEPHRINE, SHOULD ONLY (ING 2)

HCC:G3
Boiling Pt:B.P. Text:-55F,-49C
Melt/Freeze Pt:M.P/F.P Text:-153F,-103C
Vapor Pres:190 PSIG
Vapor Density:4.2
Spec Gravity:1.248
Solubility in Water:0.5 WT @ 37.8C
Appearance and Odor:CLEAR COLORLESS LIQUEFIED GAS, SLIGHT ETHEREAL
ODOR.
Percent Volatiles by Volume:100 WT

Stability Indicator/Materials to Avoid:YES
INCOMPATIBLE WITH ALKALI OR ALKALINE EARTH METALS-POWDERED AL, ZN, BE,
ETC.
Stability Condition to Avoid:AVOID OPEN FLAMES AND HIGH TEMPERATURES.
Hazardous Decomposition Products:DECOMP PRODS ARE HAZ. CAN BE DECOMP BY
HIGH TEMPS (OPEN FLAMES, GLOWING METAL SURFS, ETC.) (SUPP DATA)

Waste Disposal Methods:RECOVER BY DISTILLATION OR REMOVE TO A PERMITTED
WASTE DISPOSAL FACILITY. COMPLY WITH FEDERAL, STATE, AND OR LOCAL
REGULATIONS.

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.