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Section 1-IDENTIFICATION <br /> Supplier/Manufacturer Emergency Contact Information <br /> CEMEX,Inc. (713)650-6200 <br /> 920 Memorial City Way,Suite 100 <br /> Houston,Texas 77024 <br /> Product name and synonyms <br /> Calcium Sulfate Dihydrate,Gypsum Stone, <br /> Hydrated Calcium Sulfate,Mineral White <br /> Chemical family Formula <br /> Limestone/Dolomite(CAS#13397-24-5) CaSO4—21120 <br /> Section 2-COMPONENTS <br /> Hazardous Ingredients <br /> Respirable quartz(CAS# 14808-60-7)—greater than 0.1%by weight <br /> ACGIH TLV-TWA(2006)=0.025 mg respirable quartz dust/m3 <br /> OSHA PEL(8-hour TWA)=(10 mg respirable dust/m3)/(percent silica+2) <br /> NIOSH REL(8-hour TWA)=0.05 mg respirable dust/m3 <br /> Section 3 -HAZARD IDENTIFICATION <br /> Potential Health Effects <br /> Relevant Routes of Exposure: <br /> Eye contact,skin contact,inhalation,and ingestion. <br /> Effects Resulting from Eve Contact: <br /> Exposure to airborne dust may cause immediate or delayed irritation or inflammation. Eye contact by large amounts of dry <br /> powder or splashes of wet gypsum dust may cause eye irritation. Such exposures may require immediate first aid(see Section 4) <br /> and medical attention to prevent damage to the eye. <br /> Effects Resulting from Skin Contact: <br /> Direct contact may cause irritation by mechanical abrasion. <br /> Effects Resulting from Inhalation: <br /> Gypsum may contain trace amounts of free crystalline silica. Prolonged exposure to respirable free silica can aggravate other lung <br /> conditions and cause silicosis,a disabling and potentially fatal lung disease. <br /> Exposure to gypsum dust may cause irritation to the moist mucous membranes of the nose,throat,and upper respiratory system. It <br /> may also leave unpleasant deposits in the nose. <br /> Effects Resulting from Ingestion: <br /> Although small quantities of dust are not known to be harmful,ill effects are possible if larger quantities are consumed. <br /> Carcinogenic potential: <br /> Limestone is not listed as a carcinogen by NTP,OSHA,or IARC. It may however,contain trace amounts of substances listed as <br /> carcinogens by these organizations. <br /> Crystalline silica,which is a component of limestone,is now classified by IARC as known human carcinogen (Group I). NTP <br /> has characterized respirable silica as"reasonably anticipated to be[a] carcinogen". <br /> Medical conditions which may be aggravated be,inhalation or dermal exposure: <br />