DuPont Polymers

“DELRIN” II ACETAL RESIN ALL IN SYNONYM LIST DEL019

CHEMICAL PRODUCT/COMPANY IDENTIFICATION

Material Identification

"DELRIN" is a registered trademark of DuPont

Corporate MSDS Number DU001842

Tradenames and Synonyms

"DELRIN" II 100 NC010,

"DELRIN" II 150E NC010, 150E NC010A, 150SA NC010,

"DELRIN" II 500SA NC010, 900 NC010, 900F NC010,

"DELRIN" II 1700 NC010,

"DELRIN" II DE9206 NC010,

"DELRIN" II DE9385 NC010, DE9386 NC010,

"DELRIN" II DE9442 NC010, DE9447 NC010

Company Identification

MANUFACTURER/DISTRIBUTOR

DUPONT ENGINEERING POLYMERS

1007 MARKET STREET

WILMINGTON, DE 19898

PHONE NUMBERS

Product Information 1-(800) 441-7515

Transport Emergency 1-(800) 424-9300

Medical Emergency 1-(800) 441-3637

COMPOSITION/INFORMATION ON INGREDIENTS

Components Material CAS Number %

POLYOXYMETHYLENE HOMOPOLYMER 25231-38-3 >97

ANTIOXIDANT <0.2

STABILIZERS < 2

LUBRICANT (IN F TYPES ONLY) 1

FORMALDEHYDE 50-00-0 <0.005

Components (Remarks)

Material is not known to contain Toxic Chemicals under Section 313 of Title III of the Superfund Amendments and Reauthorization Act of 1986 and 40 CFR part 372.

HAZARDS IDENTIFICATION

Carcinogenicity Information

The following components are listed by IARC, NTP, OSHA or ACGIH as carcinogens. A "P" indicates a proposed carcinogen.

Material IARC NTP OSHA ACGIH

FORMALDEHYDE X X X X

FIRST AID MEASURES

First Aid

INHALATION

No specific intervention is indicated as the compound is not likely to be hazardous by inhalation. Consult a physician if necessary. If exposed to fumes from overheating or combustion move to fresh air. Consult a physician if symptoms persist.

SKIN CONTACT

The compound is not likely to be hazardous by skin contact, but cleansing the skin after use is advisable. If molten polymer gets on skin, cool rapidly with cold water. Do not attempt to peel polymer from skin. Obtain medical treatment for thermal burn.

EYE CONTACT

In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Call a physician.

INGESTION

No specific intervention is indicated as compound is not likely to be hazardous by ingestion. Consult a physician if necessary.

FIRE FIGHTING MEASURES

Flammable Properties

Flash Point 322 C (612 F) ASTM 1929-62

"Delrin" dust cloud ignition temperature is 440 degrees C (824 degrees F).

Burns with invisible flame. Hazardous gases/vapors produced in fire are carbon monoxide and formaldehyde.

Extinguishing Media

Water, Foam, Dry Chemical, C02.

Fire Fighting Instructions

Keep personnel removed and upwind of fire. Use self-contained breathing apparatus.

ACCIDENTAL RELEASE MEASURES

Safeguards (Personnel)

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

Spill Clean Up

Recover undamaged and minimally contaminated material for reuse and reclamation. Shovel or sweep up.

HANDLING AND STORAGE

Handling (Personnel)

See FIRST AID and PERSONAL PROTECTIVE EQUIPMENT SECTIONS.

Storage

Dry storage. Keep container closed to prevent contamination.

Open containers only in a well ventilated area.

EXPOSURE CONTROLS/PERSONAL PROTECTION

Engineering Controls Use sufficient ventilation to keep employee exposure below recommended limits.

Personal Protective Equipment

EYE/FACE PROTECTION

Wear safety glasses. Wear coverall chemical splash goggles and face shield when possibility exists for eye and face contact due to splashing or spraying of molten material.

RESPIRATORS

When temperatures exceed 230 degrees C and ventilation is inadequate to maintain concentrations below exposure limits, use a positive pressure air supplied respirator. Air purifying respirators may not provide adequate protection.

PROTECTIVE CLOTHING

If there is potential contact with hot/molten material, wear heat resistant clothing and footwear.

Exposure Guidelines

Exposure Limits

"DELRIN" II ACETAL RESIN ALL IN SYNONYM LIST DEL019

PEL (OSHA) Particulates (Not Otherwise Regulated)

15 mg/m3, 8 Hr. TWA, total dust

5 mg/m3, 8 Hr. TWA, respirable dust

Other Applicable Exposure Limits

POLYOXYMETHYLENE HOMOPOLYMER

PEL (OSHA) None Established

TLV (ACGIH) None Established

AEL * (DuPont) 10 mg/m3, 8 Hr. TWA, total dust

5 mg/m3, 8 Hr. TWA, respirable dust

FORMALDEHYDE

PEL (OSHA) 0.75 ppm, 0.92 mg/m3, 8 Hr. TWA STEL 2 ppm, 2.5 mg/m3

TLV (ACGIH) Ceiling 0.3 ppm, 0.37 mg/m3, A2

AEL * (DuPont) 1 ppm, 8 & 12 Hr. TWA

2 ppm, 15 minute TWA

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

PHYSICAL AND CHEMICAL PROPERTIES

Physical Data

Melting Point 172-184 C (342-363 F)

% Volatiles NA

Solubility in Water Insoluble

Odor Slight formaldehyde

Form Granules or powder

Specific Gravity 1.42

STABILITY AND REACTIVITY

Chemical Stablility

Stable at normal temperatures and storage conditions.

Incompatibility with Other Materials

Incompatible with strong acids and bases (decomposes forming formaldehyde) and strong oxidizing agents. At melt temperatures, acetal resins are incompatible with halogenated polymers such as PVC and PVDC.

Decomposition

Hazardous gases/vapors produced are formaldehyde.

Polymerization

Polymerization will not occur.

ECOLOGICAL INFORMATION

Ecotoxicological Information

No information available. Toxicity is expected to be low based on insolubility in water.

DISPOSAL CONSIDERATIONS

Waste Disposal

Preferred options for disposal are (1) recycling, (2) incineration with energy recovery, and (3) landfill. The high fuel value of this product makes option 2 very desirable for material that cannot be recycled. Treatment, storage, transportation, and disposal must be in accordance with applicable federal, state/provincial, and local regulations.

TRANSPORTATION INFORMATION

Shipping Information

DOT

Proper Shipping Name NA

Hazard Class Not regulated

REGULATORY INFORMATION

U.S. Federal Regulations

TSCA Inventory Status Listed.

State Regulations (U.S.)

STATE RIGHT-TO-KNOW

No substances on the state hazardous substances list, for the states indicated below, are used in the manufacture of products on this Material Safety Data Sheet, with the exceptions indicated.

SUBSTANCES ON THE PENNSYLVANIA HAZARDOUS SUBSTANCES LIST PRESENT AT A CONCENTRATION OF 1 % OR MORE (0.01% FOR SPECIAL HAZARDOUS SUBSTANCES)- None known.

WARNING - SUBSTANCES KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM- Formaldehyde

SUBSTANCES ON THE NEW JERSEY WORKPLACE HAZARDOUS SUBSTANCE LIST PRESENT AT A CONCENTRATION OF 1% OR MORE (0.1% FOR SUBSTANCES IDENTIFIED AS CARCINOGENS, MUTAGENS OR TERATOGENS)- None known.

OTHER INFORMATION

NFPA, NPCA-HMIS

NFPA Rating

Health 1

Flammability 1

Reactivity 0

Additional Information

MEDICAL USE: CAUTION: Do not use in medical applications involving permanent implantation in the human body. For other medical applications see DuPont CAUTION Bulletin No. H-50102.

The data in this Material Safety Data Sheet relates only to the specific material designated herein and does not relate to use in combination with any other material or in any process.

Responsibility for MSDS J. P. BOLLMEIER

Address DUPONT ENGINEERING POLYMERS

CHESTNUT RUN PLAZA 713

WILMINGTON, DE 19880-0713

Telephone 302-999-4257