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J <br />Immediate Hazard: - D Hazard: X Fire Hazard: - M014( <br />— Pressure HazarC: _ Reactivity Hazard: - <br />ADDITIONAL ENVIRONMENTAL REGULATORY INFORMATION: <br />Ther® may be specific regulations at t <br />this, material. he local, regional or state level that pertain to <br />f' <br />. a.�a�ua_ara�s/J I lJtiAGE: <br />Product which has been in service at elevated te=:peratures (greater than 1800 F) may <br />undergo partial conversion to cristobalite, a fora of crystalline silica which can cause <br />severe respiratory disease --"Pneumoconiosis". The amount of <br />depend on the temperature and length in service. cristobalite present will <br />IARC has recently reviewed the animal, human and other relevant experimental data on <br />silica in order to critically evaluate and classify <br />on its review, IAthe cancer causing potential. Based <br />RC claasified cxYstalline silica as a group 2A carcinogen. By definitio <br />a group 2A carcinogen is probably carcinogenic to humans. , <br />2A classification was based on limited evidence of carcinogenicity For crystalline silicaZARCts <br />in humans alld <br />silica <br />sufficient evidence of carcinogenicity in experimental animals.. <br />The OSHA a <br />permissible exposure limit (PEL) for cristobalite is 0.05 nq/!i3 <br />ACGIH threshold limit value (TLV) for cristobalite is 0.05 (rasp.) The <br />Particular care should be taken when working alit '°used" 5 =9/ material (ACGIH 1988-89). <br />of dust. When removing and handling ceramic fiber used in high t minimi -e generation <br />special caution should be taken to avoid unnecessary cutting and tearing f the applications, <br />material to minimize generation of airborne dust. Use NIOSH or MSHA approved equipment <br />u <br />when airborne esaosure limits may <br />inadequate ventilation or other areas. Acceptableerespirators cially in onecnoamendeded sfor �given <br />airborne cristobalite concentrations are: <br />Concentration <br />----------------------- Respirator-------------- <br />espirator ---- <br />Up to 20 times the PEL - <br />Half -face cartridge respirator with <br />10 to 100 ti=as the PEI- high -efficiency filters. <br />Full -face cartridge respirator with <br />> 100 ti=esv h'-gh-efficiency filters. <br />the P. L Full -face <br />positive -pressure supplied - <br />air respirator, <br />-- a— ••. .. e e b. a u 1 J <br />D.O.T. PROPER SHIPPING NAME (49 CFR 172.101): <br />D.O.T. LABELS REQUIRED (49 CFR 172.101): <br />D.O.T. PLACARDS REQUIRED: NA <br />BILL OF LADING DESCRIPTION: ND <br />UN/NA CODE: NA <br />ND - No Data <br />NA = Not APPlicabie <br />NA <br />NA <br />NA <br />251 /Page 5 of 6 <br />-18- <br />