$1251 Mastic (rec)

SECTION 2: Hazards identification

EMERGENCY OVERVIEW: $4251 and $1243 mastics are not hazardous during proper installation, but may emit hazardous thermal decomposition and combustion byproducts if overheaied to degradation. Overheating the product to charring or burning may produce vapors thal may cause eye, skin, nose and throat irritation. Persons with pre-existing eye, skin, or respiratory disorders (e.g., asthma conditions) may be more susceptible to the efiecis of these vapors.

Acute Health Hazards

Oe oe, - BYES: Contact with the molten material may cause thermal burns. SKIN: This product is not expected to be a skin irritant. Repeated contact may cause an allergic skin reaction in sensitized individuals. Persons with pre-existing skin disorders may be more susceplible to the effects of Skin absorption of this material this material. Contact with the molten material may cause thermal burns. is unlikely. if swallowed no harmful effects are expecied from INGESTION: Ingestion of this product is highly unlikely. However, this material. INHALATION: In common with most organic materials, thermal degradation and combustion byproducts may be toxic and should not be inhaled. (See Commenis below and the Thermal Degradation and Combustion Byproducls Section for more specific information.)

Health hazards

None Known

Medical Conditions Generally Aggravated by Exposure

Overheating the product to charting or burning may produce vapors that may cause eye, skin, nose and throat irritation. Persons with pre-existing eye, skin, or respiratory disorders (e.g., asthma conditions) may be more susceptible to the effects of these vapors.