POLYMETHYLENE POLYPHENYLISOCYANATE

SECTION 2: Hazards identification

Emergency overview Irritating to eyes, respiratory system and skin. May cause sensitization by inhalation. State of matter: liquid Colour: dark amber Odour: faint odour

Potential health effects

Acute toxicity: May cause sensitization by inhalation. Of moderate toxicity after short-term inhalation. Virtually nontoxic after a single ingestion. Virtually nontoxic after a single skin contact. Irritation / corrosion: Irritating to eyes, respiratory system and skin. Eye contact causes irritation. Skin contact causes irritation. Sensitization: Sensitization after skin contact possible. The substance may cause sensitization of the respiratory tract.

Medical Conditions Generally Aggravated by Exposure

overexposure The isocyanate component is a respiratory sensitizer. It may cause allergic reaction leading to asthma-like spasms of the bronchial tubes and difficulty in breathing. Persons with asthmatic conditions, chronic bronchitis, other chronic respiratory diseases, recurrent eczema or pulmonary sensitization should be excluded from working with isocyanates. Once a person is diagnosed as having pulmonary sensitization (allergic asthma) to isocyanates, further exposure is not recommended. An animal study indicated that MDI may induce respiratory hypersensitivity following dermal exposure. Signs and symptoms of overexposure: Symptoms can appear later.

Environmental effects

Aquatic toxicity: There is a high probability that the product is not acutely harmful to aquatic organisms.