Product ID:DELRIN II, 550SA
MSDS Date:10/18/1993
FSC:6810
NIIN:00N042855
MSDS Number: BXSPL

E I DUPONT DE NEMOURS & CO INC

1007 MARKET ST
WILMINGTON, DE 19898
US

Emergency Phone: 800-424-9300 (CHEMTREC)

Info Phone: 800-441-7515

Preparer: D L LICZWEK

Cage: 0ERJ7

E.I. DUPONT DE NEMOURS & CO

WILMINGTON, DE 19898 US

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

Cage: 18873

POLYOXYMETHYLENE HOMOPOLYMER

CAS: 25231-38-3

Fraction By Weight: >97%

OSHA PEL N/K

ACGIH TLV: N/K

ANTIOXIDANT

Fraction By Weight: <0.2%

OSHA PEL N/K

ACGIH TLV: N/K

STABILIZERS

Fraction By Weight: <2%

OSHA PEL N/K

ACGIH TLV: N/K

LUBRICANT (IN F TYPES ONLY)

Fraction By Weight: 1%

OSHA PEL N/K

ACGIH TLV: N/K

FORMALDEHYDE (SARA 302/313) (CERCLA)

CAS: 50-00-0

RTECS: LP8925000

Fraction By Weight: <0.005%

OSHA PEL SEE 1910.1048

ACGIH TLV: C 0.3 PPM, A2

EPA Report Quantity: 100 LBS

DOT Report Quantity: 100 LBS

STATE/PROVINCIAL, AND LOCAL REGULATIONS.

RTECS: 9999999ZZ

HARM-FORMALDEHYDE.

RTECS: 9999999ZZ

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:READ "SFTY PRECAUT TO OBSERVE WHEN
HNDLG MOLTEN "DELRIN" ACETAL RESIN: & "SFTY PRECAUT" IN MOLDING
MANUAL H26577 BEFORE USING "DELRIN". ACUTE:SKIN:HOT POLYMER WILL
CAUSE THERMAL BURNS. INHAL:FUMES FRO M MOLTEN POLYMER SHOULD NOT BE
INHALED.FORMALDEHYDE IS HIGHLY IRRITATING TO EYES & UPPER RESP
TRACT (EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT.
Effects of Overexposure:HLTH HAZ:& MAY CAUSE HDCH & NAUS. INHAL OF
FINES FROM GROUND PELLETS CAN IRRITATE NOSE & THROAT.
CHRONIC:FORMALDEHYDE IS RELEASED IN SM QTY DURING MELT PROCESSING.
STATISTICALLY SIGNIFICANT NUMBER OF NASAL CANCERS HAS BEEN FOUND
IN RATS AFTER PROLONGED EXPOSURE TO 15 PPM OF FORMALDEHYDE.
Medical Cond Aggravated by Exposure:INDIVIDUALS W/PREEXISTING DISEASES
OF LUNGS MAY HAVE INCREASED SUSCEPTIBILITY TO TOXICITY OF EXCESSIVE
EXPOSURE TO FORMALDEHYDE.

First Aid:INHAL:NO SPECIFIC INTERVENTION IS INDICATED AS CMPD IS NOT
LIKELY TO BE HAZ BY INHAL. CONSULT PHYS IF NEC. IF EXPOS TO FUMES
FROM OVERHEATING/COMBUSTION, MOVE TO FRESH AIR. CONSULT PHYS IF
SYMPS PERSI ST. SKIN:CMPD IS NOT LIKELY TO BE HAZ BY SKIN CONT, BUT
CLEANSING SKIN AFTER USE IS ADVISABLE. IF MOLTEN POLYMER GETS ON
SKIN, COOL RAPIDLY W/COLD WATER. DO NOT ATTEMPT TO PEEL FROM SKIN.
(SUPDAT)

Flash Point:612F,322C
Extinguishing Media:WATER, FOAM, DRY CHEMICAL, CO*2.
Fire Fighting Procedures:USE NIOSH/MSHA APPROVED SCBA & FULL PROTECTIVE
EQUIPMENT . KEEP PERSONNEL REMOVED AND UPWIND OF FIRE.
Unusual Fire/Explosion Hazard:"DELRIN" DUST CLOUD IGNITION TEMP IS 440C
(824F). BURNS WITH INVISIBLE FLAME. HAZARDOUS GASES/VAPORS PRODUCED
IN FIRE ARE CARBON MONOXIDE AND FORMALDEHYDE.

Spill Release Procedures:NOTE:REVIEW FIRE FIGHT MEASURES & FIRST AID
SECTIONS BEFORE PROCEEDING W/CLEAN-UP. USE APPROP PERSONAL PROT
EQUIP DURING CLEAN-UP. RECOVER UNDMGD & MINIMALLY CONTAMD MATL FOR
REUSE & RECLAMATION. SHOV EL OR SWEEP UP.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:SEE FIRST AID & PROT INFO SECTIONS.
DRY STORAGE. KEEP CNTNR CLSD TO PVNT CONTAM. OPEN CNTNRS ONLY IN
WELL-VENTILATED AREA.
Other Precautions:MEDICAL USE: CAUTION:DO NOT USE IN MED APPLIC
INVOLVING PERM IMPLANTATION IN HUMAN BODY. FOR OTHER MED APPLIC SEE
MFR CAUTION BULLETIN NO. H-50102. WARNING-SUBSTANCES KNOWN TO ST
OF CA TO CAUSE CANCE R, BIRTH DEFECTS/OTHER REPROD (ING 7)

Respiratory Protection:WHEN TEMPS EXCEED 230C & VENT IS INADEQ TO
MAINTAIN CONC BELOW EXPOS LIMS, USE NIOSH/MSHA APPRVD POSITIVE
PRESS AIR SUPPLIED RESP. NIOSH/MSHA APPRVD AIR PURIFYING RESPS MAY
NOT PROVIDE ADEQ PROTECTION .
Ventilation:USE ONLY WITH ADEQUATE VENTILATION.
Protective Gloves:IMPERVIOUS GLOVES .
Eye Protection:ANSI APPRVD CHEM WORKERS GOGGLES .
Other Protective Equipment:IF CONT WITH HOT/MOLTEN MATL, WEAR HEAT
RESIST CLTHG & FOOTWEAR. ANSI APPRVD EMER EYE WASH & DELUGE SHOWER
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
MATLS TO AVOID:HALOGENATED POLYMERS SUCH AS PVC & PVDC. FIRST AID
PROC:OBTAIN MED TREATMENT FOR THERM BURN. EYE:IMMED FLUSH W/PLENTY
OF WATER FOR @ LEAST 15 MINS. CALL PHYS. INGEST:NO SPECIFIC INTERVE
NTION IS INDICATED AS CMPD IS NOT LIKELY TO BE HAZ. CONSULT PHYS IF
NEC.

Melt/Freeze Pt:M.P/F.P Text:>342F,>172C
Spec Gravity:1.42
Evaporation Rate & Reference:NOT KNOWN
Solubility in Water:INSOLUBLE
Appearance and Odor:GRANULES OR POWDER, SLIGHT FORMALDEHYDE ODOR.

Stability Indicator/Materials to Avoid:YES
STRONG ACIDS & BASES (DECOMPOSES FORMING FORMALDEHYDE) & STRONG
OXIDIZING AGENTS. AT MELT TEMPS, INCOMPATIBLE W/(SUPDAT)
Stability Condition to Avoid:STABLE AT NORMAL TEMPERATUES AND STORAGE
CONDITIONS.
Hazardous Decomposition Products:HAZARDOUS GASES/VAPORS PRODUCED ARE
FORMALDEHYDE.

Waste Disposal Methods:PREFD OPTIONS FOR DISP ARE (1)RECYCLING,
(2)INCIN W/ENERGY RECOVERY, & (3)LANDFILL. HIGH FUEL VALUE OF PROD
MAKES OPTION 2 VERY DESIRABLE FOR MATL THAT CANNOT BE RECYCLED.
TREATMENT, STOR, TRANSPORATI ON, & DISP MUST BE I/A/W APPLIC
FEDERAL, (ING 6)

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.