MECHETEC Acetal C

Health hazards

IDENTIFICATION ACUTE OR IMMEDIATE EFFECTS/ROUTES OF EXPOSURE: SKIN: Molten polymer may cause thermal burns. EYES: Contact with powder or dust may cause mechanical irritation. INHALATION: Shapes are not considered an inhalation hazard. INGESTION: Not a probable route of exposure. LONG TERM/DELAYED EFFECTS: None Known. IDENTIFICATION (continued) Note: MECHETEC® Acetal C and MECHETEC® Acetal C BK stock shapes melt and become unusable for their intended purpose at temperature above 175 C (350 °F). If heated to temperatures over 230 C (446 °F), the polymer releases formaldehyde. Formaldehyde may cause skin, eye, and respiratory irritation and allergic reactions. MEDICAL RESTRICTIONS: There are no known human health effects aggravated by exposure to this product. CHRONIC/CARCINOGENICITY: Chronic inhalation studies in animals have shown that formaldehyde causes nasal cancer in rats. The international agency for research on cancer has classified formaldehyde as a carcinogen in group 2a, and the national toxicology program included formaldehyde in its annual report on carcinogens. CARCINOGEN STATUS FOR FORMALDEHYDE NTP: Not tested OSHA: Not regulated IARC: 2A ACGIH: A2

Medical Conditions Generally Aggravated by Exposure

None Known.

Potential chronic health

There are no known effects from exposure to MECHETEC® Acetal C or MECHETEC® Acetal C BK polymers themselves. Significant skin permeation and systemic toxicity after contact appears unlikely. There are inconclusive or unverified reports of human sensitization. If overheated, the polymer releases formaldehyde which may cause skin, eye, and respiratory irritation and allergic reactions 3.