AQUABOND ABP-1000 PART A

Health hazards

IDENTIFICATION IDENTIFICATION (Continued) Chronic Inhalation: As a result of previous repeated overexposures or a single large dose certain individuals develop isocyanate sensitization, which will cause them to react to a later exposure to isocyanate at levels well below the TLV. These symptoms, which can include chest tightness, wheezing, cough, shortness of breath or asthma attack could be immediate or delayed up to several hours after exposure. Similar to many non-specific asthmatic responses, there are reports that once sensitized an individual can experience these symptoms upon exposure to dust, cold air or other irritants. This increased lung sensitivity can persist for weeks and in severe cases for several years. Overexposure to isocyanates has also been reported to cause lung damage including decrease in lung function) which may be permanent. Sensitization can either be temporary or permanent. Acute Ingestion: Irritation and corrosive action can occur in the mouth, stomach tissue and digestive tract. Symptoms can include sore throat, abdominal pain nausea, vomiting and diarrhea.

Principle Routes of Exposure

Eyes: Yes Skin: Yes Inhalation: No Acute Eye Contact: Liquid, vapors and mist are irritating and can cause tearing, reddening and swelling of the eyes possibly accompanied by stinging sensation. Acute Skin Contact: Dicyclohexylmethane – 4,4' - diisocyanate is a primary skin irritant. It reacts with protein and moisture and can cause irritation. Symptoms of skin irritation include: redness swelling, rash, scaling and blistering. Dicyclohexylmethane – 4,4' - diisocyanate is also a potent sensitizer. Experience indicates that direct contact is the route of exposure most likely to cause sensitization. Once sensitized, an individual may react even to airborne levels below the TLV with the following symptoms: itching and tingling or the earlobes and neck, rash, hives, swelling of the arms and legs or other symptoms common to allergic dermatitis. These symptoms may be immediate or delayed. Chronic Skin Contact: Prolonged contact can cause reddening, swelling, rash, scaling, blistering and in some cases, skin sensitization. Individuals who have skin sensitization can develop these symptoms from contact with liquid or vapor. Animal tests have indicated that respiratory sensitization can result from skin contact with Dicyclohexylmethane – 4,4' - diisocyanate. Acute Inhalation: Inhalation of Dicyclohexylmethane – 4,4' - diisocyanate concentrations above the TLV can irritate the mucous membranes in the respiratory tract causing runny nose, sore throat, coughing, chest discomfort, shortness of breath and reduced lung function. Persons with a preexisting, nonspecific bronchial hyper reactivity can respond to concentrations below the TLV with similar symptoms. Exposure well above the TLV may lead to bronchitis, bronchial spasm and pulmonary edema. These effects are usually reversible. Chemical or hypersensitive pneuonitis with flu-like symptoms has also been reported. - 1 -15