“DELRIN” ACETAL RESIN ALL IN ALL SYNONYM LIST DEL036G

SECTION 2: Hazards identification

Potential health effects

ADDITIONAL HEALTH EFFECTS Read “Handling Precautions” in Molding Guide H26577-2 for “Delrin” Acetal Resins before using “Delrin” “DELRIN” POLYMER There are no known adverse health effects from exposure to “Delrin” polymer. However, if overheated, formaldehyde may be released. Formaldehyde is a skin, eye and mucous membrane irritant and may cause allergic reactions, headache and/or nausea. Inhalation of fines from ground pellets can irritate the nose and throat. Significant skin permeation and systemic toxicity after contact appears unlikely. There are inconclusive or unverified reports of human sensitization. Individual with preexisting diseases of the lungs may have increased susceptibility to the toxicity of excessive exposure to formaldehyde. Animal Data: Inhalation 6 hr LC50: >22,000 mg/m3, rats (very low toxicity of polymer) Oral LD50: >11,000 mg/kg, rats (very low toxicity by ingestion of polymer) “Delrin” is not a skin irritant, and is not a skin sensitizer in animals. Inhalation: Single or repeated exposure to high concentrations of “Delrin” dust resulted in collapse of some areas of the lungs, other areas were over-inflated. This effect was seen as late as 11-19 days post-exposure. Ingestion: No toxic effects observed. Some animal studies have shown association between prolonged exposure to formaldehyde and nasal cancer. Carcinogenicity Information