CALCIUM SULFATE DIHYDRATE (GYPSUM)

SECTION 2: Hazards identification

Hazard statements

Calcium Sulfate has not been associated with acute toxicity or chronic iliness. The United States Food and Drug Administration (FDA) [CFR Title 21, V.3, Section 184.1230] has characterized Calcium Sulfate as “Generally Recognized as Safe.” (GRAS). Wet materia! presents minimal dust exposure risk. If this product is processed in dry form, measures may be necessary to contro} workplace airborne dust emissions below regulatory limits, This document addresses the potential for airborne dust emissions from dry product. Crystalline Silica (Quartz) is 2 constituent of potential concern in bituminous coai ash, Laboratory analyses of this Gypsum product have indicated non-detectable levels of Crystalline Silica (<0.2%) based on total Silicon (Si) content. This preduct exhibits minimal risk of excessive exposure to airborne Crystalline Silica so long as airborne dust concentrations are maintained below

NFPA Ratings

HEALTH I FLAMMABILITY 0 REACTIVITY 6 PERSONAL PROTECTION E (“E” designates safety glasses, cloves, respiratory protection when necessary.) Exposure risk is dependent upon particle size and moisture content. Dry, finely divided product presents an increased likelihood of airborne dust emissions. Wet product presents minimal! airborne dust exposure risk,

Principle Routes of Exposure

Dry Product) Inhalation of airborne dust ACUTE EFFECTS OF OVEREXPOSURE: INHALATION: Acute exposures to high concentrations of airborne dust may result in respiratory irritation. Extremely high levels of inhaled dust may block respiratory passages. Effects of overexposure include irritation of the nose and throat and upper respiratory system. Refer to

TOXICOLOGICAL INFORMATION

EYE: Direct eye contact with airbome dust may cause eye irritation resulting from abrasive/mechanical action, SKIN: Prolonged contact with wet product or dust may cause skin irritation or sensitization, possibly leading to dermatitis. INGESTION: Product is not intended to be eaten. Ingestion of this product in large quantity may cause nausea and/or vomiting. ther serious gastrointestinal effects may occur ifJarge amounts of product are swallowed, Refer to Section 11- SYNERGISTIC MATERIALS; None known. (It is recognized that certain medications and metals may cause increased sensitivity to other substances. } SIGNS AND SYMPTOMS OF OVEREXPOSURE: * Redness, swelling, itching, and/or irritation of skin and eves, dermatitis. * Inritation of skin; dryness, cracking. * Respiratory irritation,

Potential chronic health

OF OVEREXPOSURE EXCESSIVE AND REPEATED AND PROLONGED EXPOSURES MAY CAUSE: « Skxin dryness/defatting/sensitization/dermatitis Resviratory iritation, inflammation. Extreme airborne dust conditions may cause blockage of respiratory + passages. » Eye inflammation, irritation of mucous membranes. CARCINOGENICITY: Gypsum has not been listed by IARC NTP

Medical Conditions Generally Aggravated by Exposure

Pre-existing allergies and respiratory disorders, such as bronchitis, emphysema, asthina, may be exacerbated by exposure to airborne dust. Pre-existing skin conditions (dryness, allergies, rashes, dermatitis) may be aggravated by contact with wet or dry product.