Section 1. Chemical, Product and Company Identification

Product Name: CELCON C251A CF2001

Product Code: DB9326

MSDS Number: CN1000

Synonyms: POLYOXYMETHYLENE COPOLYMER

ACETAL COPOLYMER

Manufacturer: TICONA (formerly Hoechst Celanese Corporation)

90 MORRIS AVE.

SUMMIT, NJ. 07901

UNITED STATES

Product Use: Engineering thermoplastic.

MSDS Prepared By: O. Schnellenberger

Section 2. Composition/Information on Ingredients

Ingredients: Ingredient CAS Number

Base Resin 24969-26-4

This is a polymeric material. All constituents are wetted by the polymer system, and therefore, present no likelihood of exposure under normal conditions of processing and handling.

This product contains proprietary ingredients.

This product is not regulated by WHMIS.

This material is considered hazardous under OSHA Regulations due to the release, if overheated, of formaldehyde, an OSHA regulated material.

Section 3. Hazards Identification

Emergency Overview: Pellets or powder with slight to no odor. Combustion and decomposition may produce hazardous fumes. Base resin dust/powder has a US Bureau of Mines relative dust explosion hazard rating of severe. Molten material can cause thermal burns on contact with skin or eyes. Spilled pellets may create a slipping hazard. Overheating may result in release of formaldehyde, which may irritate the eyes and respiratory tract.

Potential Health Effects:

Routes of Exposure: Skin and eye contact. Inhalation of vapors, if overheated.

Signs and Symptoms of Exposure: No specific information available concerning exposure to the product. If formaldehyde is released as an off-gas, a burning sensation and tearing of the eyes may occur. An irritating odor may be noted.

Immediate Effects:

Skin: No specific information available on the product. Hot or molten material has the potential to cause thermal burns. Polymer particles can cause mechanical irritation.

Eyes: No specific information available on the product. Polymer particles can cause mechanical irritation. Degradation vapors may cause irritation.

Inhalation: No specific information available on the product. Pellets are not considered an inhalation hazard; polymer dust/flake may be considered an inert nuisance particulate. Formaldehyde, which may be released if overheated, may cause irritation of the upper respiratory tract.

Ingestion: No specific information available on the product; however, low toxicity by this route is expected based on the biological activity of high molecular weight polyacetal polymers.

Long Term/Delayed Effects: No specific information available. Formaldehyde may cause respirator sensitization.

Carcinogenicity: No specific information available on the product. Formaldehyde is listed as a potential cancer hazard by OSHA, a probable human carcinogen by The International Agency for Research on Cancer (IARC, 2A), and a substance which can reasonably be anticipated to be a carcinogen by The National tEsting Program (NTP). Formaldehyde should not pose a risk if exposures are kept below the OSHA Permissible Exposure Limit.

The International Agency for Research on Cancer (IARC) has evaluated carbon black, which may be contained in this product, and found it to be possibly carcinogenic to humans (Group 2B). Any carbon black in this product is wetted by the polymer system, and therefore, presents no likelihood of exposure under normal conditions of processing and handling.

Medical Conditions Aggravated By Exposure: No specific information available on the product. Off-gases, which may be released if overheated, may affect those with chronic diseases of the respiratory system.

Section 4. First Aid Measures

Skin: If hot or molten polymer of hot vapors contact skin, cool rapidly with cold water. If polymer is stuck to skin, do not remove. Seek medical attention. Allow adhered polymer to come off naturally. Removal of adhered polymer may result in more tissue damage than if polymer is allowed to come off over time.

Eyes: Flush with plenty of water. Seek medical attention if discomfort persists, and to remove foreign body.

Inhalation: Remove to fresh air. Seek medical attention if difficulties in breathing occur.

Ingestion: If a significant quantity has been swallowed, give two glasses of water to dilute. Seek medical attention.

Note to Physicians: This product is essentially inert and nontoxic. However, if it is overheated or burns, gases such as carbon monoxide and formaldehyde may be released. Those exposed to off-gases may need to have their arterial blood gases and carboxyhemoglobin levels checked. If the carboxyhemoglobin levels are normal and the exposure occurred in an enclosed space, asphyxia (carbon dioxide replacing oxygen) is a possibility. Formaldehyde is a respiratory irritant gas. If patients may have inhaled high concentrations of irritating fumes, they should be monitored for delayed onset pulmonary edema.

Section 5. Fire Fighting Measures

Flashpoint: >93 deg C (>200 deg F) by Tag Closed Cup Method.

Base resin dust/powder has a US Bureau of Mines relative dust explosion hazard rating of severe.

Hazardous Products

Of Combustion: Carbon monoxide and carbon dioxide.

Extinguishing material: Water spray, foam, carbon dioxide, or dry chemical.

Firefighting Instructions: Firefighters should wear self-contained breathing apparatus and full fire-fighting turn-out gear (bunker gear). Keep personnel removed from and upwind of fire. Water should be used to keep fire-exposed containers cool. Product burns with a very hot, but very faint blue flame. Water, foam and dry chemical may cause damage to electrical equipment.

Section 6. Accidental Release Measures

*For more information, see regulatory section 15.

Procedures in Case

Of Spill or Leak: Sweep or gather up spills and place in proper container for recovery or disposal. Ticona supports SPI’s Operation Clean Sweep.

Section 7. Handling and Storage

Handling: Do not handle hot or molten material without appropriate protective equipment. Maintain good housekeeping in work areas. Do not exceed recommended process temperatures to minimize release of decomposition products. Do not smoke in areas where polymer dust is present. Appropriate measures should be taken to control the generation and accumulation of dust during conveying and processing operations.

Storing: Store in a cool dry place. Maintain dryness of resin.

Section 8. Exposure Controls/Personal Protection

Engineering Controls: Local Exhaust: Recommended when appropriate to control employee exposure to dust or process vapors.

General: May not be adequate as the sole means to control employee exposure.

Protective Equipment:

Skin: When thermal or melt processing, wear long pants, long sleeves, well insulated gloves, and face shield when there is a chance of contact.

Eyes: Safety eyewear recommended.

Inhalation: A NIOSH approved respirator is recommended if there is a possibility of dust generation above permissible exposure limits or that decomposition vapors may be generated.

Exposure Guidelines: Operations involving grinding and machining of parts should be reviewed to assure that particle levels are kept below recommended standards.

This product may contain carbon black. Formaldehyde is a hazardous degradation product. See the exposure limits below.

Ingredient: Agency: Value:

Carbon black OSHA PEL 3.5 mg/cu m

ACGIH TLV 3.5 mg/cu m

Formaldehyde OSHA PEL 0.75 ppm 8 hr. TWA; 2 ppm STEL

ACGIH TLV 0.3 ppm ceiling

Nuisance/inert dust OSHA PEL 15 mg/cu m (total)

5 mg/cu m (respirable)

Nuisance particulates ACGIH TLV 10 mg/cu m (total)

3 mg/cu m (respirable)

Ticona has decided not to adopt the ACGIH TLV for formaldehyde based on a scientific evaluation of all the available data. Ticona has decided to adopt the OSHA Standard.

Section 9. Physical and Chemical Properties

Appearance: Pellets

Odor: Slight characteristic odor

Physical State: Solid

Vapor Pressure: < 0.001 mm Hg

Melting Point: 165.0 deg C (329.0 deg F).

Solubility: negligible < 0.1% (in water)

Specific Gravity: 1.4 – 1.8

Percent Volatiles: < 1.0 by weight

Section 10. Stability and Reactivity

Chemical Stability: Stable under ordinary conditions of use and storage.

Conditions to Avoid: Fire. Do not allow mixing of this material with PVC. Do not heat above 460 deg F (238 deg C). Avoid prolonged exposure to temperatures above 380 deg F (193 deg C). Recommended melt temperatures 360 – 390 deg F (182 – 199 deg C).

Incompatibility: Strong acids and oxidizing agents. Do not compound with PVC or other chlorine containing polymers (to avoid acid formation).

Hazardous Decomposition

Products: Trioxane, formaldehyde, paraformaldehyde, and formic acid.

Hazardous

Polymerization: Will not occur.

Section 11. Toxicological Information

No specific information available on the product.

Inhalation of carbon black, a possible ingredient, has been shown to cause lung tumors in rats at high exposure concentrations. These concentrations appear to exceed the capacity of the lung to clear the carbon black particles, thus resulting in significant toxicity.

Section 12. Ecological Information

Ecotoxicity: The effects of resin pellets on the wildlife that may ingest them is not well understood. In the case of seabirds, some marine biologists believe that the fowl may not be able to pass plastic pellets through their digestive tracts. Thus, large quantities of ingested pellets may cause intestinal blockage, false feelings of satiation or reduction in absorption of nutrients, causing malnutrition and starvation. The goal of PSI’s Operation Clean Sweep is zero loss of pellets into the environment.

Environmental Fate/

Information: This material is considered to be non-biodegradable.

Section 13. Disposal Considerations

Disposal: Recycling is encouraged. Incinerate or landfill in accordance with federal, state, and local regulations. This product, as shipped, is not a RCRA hazardous waste under present EPA regulations.

Section 14. Transport Information

Not regulated under US Department of Transportation.

Section 15. Regulatory Information

TSCA: All the components of this product comply with TSCA Regulations.

SARA: This product does not contain any toxic chemicals subject to the reporting requirements of Section 313 of the Emergency Planning and Community Right-to-Know Act of 1986 and of 40 CFR 372.

Section 16. Other Information

Hazard Ratings: Agency Health Flammability Reactivity Other

NFPA 1 1 0

HMIS 1 1 0

Note 1: NFPA and HMIS ratings are as determined by Ticona.

Note 2: Revisions in this MSDS Version include adding hazards of carbon black, Section 2, 3, 8, 10.

Disclaimer: This product is not intended for use in medical or dental implants.

Refer to the appropriate Ticona bulletins for specific processing guidance and good manufacturing practices (purging, processing parameters, shutdown, etc.).

The information contained herein is accurate to the best of our knowledge. We do not suggest or guarantee that any hazards listed herein are the only ones which exist. Ticona makes no warranty or any kind, express or implied, concerning the safe use of this material in your process or in combination with other substances. Effects can be aggravated by other materials and/or this material may aggravate or add to the effects of other materials. User has the sole responsibility to determine the suitability of the materials for any use and the manner of use contemplated. User must meet all applicable safety and health standards.