Product ID:DELRIN ACETAL RESIN, 500 BKH632
MSDS Date:11/08/1989
FSC:6810
NIIN:00N058574
MSDS Number: BXDGN

E I DUPONT DE NEMOURS & CO

1007 MARKET STREET
WILMINGTON, DE 19898
US

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

Info Phone: 800-441-5715

Preparer: J. B. ARMITAGE

Cage: 0ERJ7

E.I. DUPONT DE NEMOURS & CO

WILMINGTON, DE 19898 US

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

Cage: 18873

POLYOXYMETHYLENE, POLYACETAL; (POLYOXYMETHYLENE,

CAS: 9002-81-7

OSHA PEL N/K

ACGIH TLV: N/K

FORMALDEHYDE HOMOPOLYMER POLYACETAL (HAZARDOUS SUBSTANCE

OSHA PEL N/K

ACGIH TLV: N/K

PIGMENTS

Fraction By Weight: <1-3%

OSHA PEL N/K

ACGIH TLV: N/K

ANTIOXIDANTS

Fraction By Weight: <1-3%

OSHA PEL N/K

ACGIH TLV: N/K

STABILIZERS

Fraction By Weight: <1-3%

OSHA PEL N/K

ACGIH TLV: N/K

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:YES Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:READ "SFTY PREC TO OBSERVE WHEN HNDLG
MOLTEN DELRIN ACETAL RESIN" E-49703 & "SFTY PREC" IN MOLDING MANUAL
E-75426, BEFORE USING DELRIN. AVOID PRLNGD HEATING ABOVE MELTING PT
(178C). ACUTE:INGEST:NOT P ROBABLE ROUTE OF EXPOS. SKIN:NOT TOX.
HOT POLYMER WILL CAUSE THERMAL BURNS. EYE:MECH IRRIT. INHAL:(EFTS
OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:HLTH HAZS:FORMALDEHYDE IS HIGHLY IRRIT TO EYES
& UPPER RESP TRACT. CHRONIC:FORMALDEHYDE RELEASED IN SMALL QUANTITY
DURING MELT PROCESSING IS CLASSIFIED AS AN ANIMAL CARCINOGEN.
Medical Cond Aggravated by Exposure:INDIVIDUALS WITH PREEXISTING
DISEASES OF THE LUNGS MAY HAVE INCREASED SUSCEPTIBILITY TO THE
TOXICITY OF EXCESSIVE EXPOSURE TO FORMALDEHYDE.

First Aid:INGEST:CALL MD IMMEDIATELY . INHAL:IF EXPOSED TO FUMES FROM
OVERHEATING MOVE TO FRESH AIR. CONSULT A PHYSICIAN IF SYMPTOMS
PERSIST. EYES:FLUSH WITH WATER FOR AT LEAST 15 MINUTES. CONSULT A
PHYSI CIAN IF SYMPTOMS PERSIST. SKIN:COOL RAPIDLY WITH COLD WATER.
DO NOT ATTEMPT TO PEEL POLYMER FROM SKIN. OBTAIN MEDICAL ATTENTION
FOR THERMAL BURN.

Flash Point:612F,322C
Extinguishing Media:WATER, CARBON DIOXIDE, FOAM, DRY CHEMICAL.
Fire Fighting Procedures:WEAR NIOSH/MSHA APPROVED SCBA & FULL
PROTECTIVE EQUIPMENT . PROTECTION FROM FUMES OF FORMALDEHYDE.
Unusual Fire/Explosion Hazard:BURNS WITH A COLORLESS FLAME. DELRIN DUST
CLOUD IGNITION TEMPERATURE 440C.

Spill Release Procedures:SWEEP UP TO PREVENT A SLIPPING HAZARD. AQUATIC
TOXICITY:TOXICITY IS EXPECTED TO BE LOW BASED ON THE INSOLUBILITY
OF THE POLYMER IN WATER.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:DRY STORAGE. KEEP CONTAINERS CLOSED TO
PREVENT CONTAMINATION. OPEN CONTAINERS ONLY IN WELL-VENTILATED
AREAS.
Other Precautions:NONE SPECIFIED BY MANUFACTURER.

Respiratory Protection:NIOSH/MSHA APPROVED RESPIRATOR IF LOCAL EXHAUST
VENTILATION DOES NOT KEEP FORMALDEHYDE CONCENTRATION BELOW 1 PPM.
Ventilation:LOCAL EXHAUST AT PROCESSING EQUIPMENT.
Protective Gloves:IMPERVIOUS GLOVES .
Eye Protection:ANSI APPROVED SAFETY GLASSES .
Other Protective Equipment:EYE WASH & DELUGE SHOWER WHICH MEET ANSI
DESIGN CRITERIA . LONG SLEEVE COTTON SHIRT AND LONG PANTS IF (SUPP
DATA)
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
HAZ DECOMP PRODS:2 PPM (15-MINUTE). OTHER PROTECTIVE EQUIPMENT:HANDLING
MOLTEN POLYMER.

Melt/Freeze Pt:M.P/F.P Text:342F,172C
Spec Gravity:1.42
Solubility in Water:INSOLUBLE
Appearance and Odor:GRANULES OR POWDER, SLIGHT FORMALDEHYDE ODOR.

Stability Indicator/Materials to Avoid:YES
STRONG ACIDS AND BASES. (DECOMPOSES FORMING FORMALDEHYDE). STRONG
OXIDIZING AGENTS.
Stability Condition to Avoid:HEATING ABOVE 23OC-FORMS FORMALDEHYDE.
Hazardous Decomposition Products:CARBON MONOXIDE & FORMALDEHYDE-IS
CLASSIFIED AS ANIMAL CARCIN & HAS AN OSHA PEL OF 1PPM (8-HR TWA), &
STEL OF (SUP DAT)

Waste Disposal Methods:INCINERATION OR LANDFILL IN COMPLIANCE WITH
FEDERAL, STATE AND 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.