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VL HEALTH HAZARD INFORMATION <br /> Routes of Exposure and Effects: <br /> Skin: Possible drying resulting in dermatitis. <br /> Eyes: Mechanical irritant. <br /> Inhalation: Acute(short term)exposure to dust levels exceeding the PEL may cause irritation of respiratory tract resulting in a dry <br /> cough. Chronic(long term)exposure to airborne bentonite dust containing respirable size(<_ 10 µ) quartz particles, where <br /> respirable quartz particle levels are higher than TLV's,may lead to development of silicosis or other respiratory problems. <br /> Persistent dry cough and labored breathing upon exertion may be symptomatic. <br /> Ingestion: No adverse effects. <br /> Permissible Exposure Limits: OSHA PEL ACGIH TLV <br /> (for air contaminants) (8hr.TWA) <br /> Bentonite as "Particulates not otherwise regulated" <br /> (formerly nuisance dust) <br /> Total dust 15mg/m3 ND <br /> Respirable dust 5mg/m3 ND <br /> Crystalline Quartz(respirable) 0.1mg/m3 O.lmg/m3 <br /> Carcinogenicity: Bentonite is not listed by ACGIH,IARC,NTP or OSHA. IARC, 1997,concludes that there is sufficient evidence in <br /> humans for the carcinogenicity of inhaled crystalline silica from occupational sources (IARC Class 1),that carcinogenicity was not <br /> detected in all industrial circumstances studied and that carcinogenicity may depend on characteristics of the crystalline silica or on <br /> external factors affecting its biological activity. NTP classifies respirable crystalline silica as"known to be a human carcinogen"(NTP <br /> 91 Report on Carcinogens—2000). ACGIH classifies crystalline silica,quartz,as a suspected human carcinogen(A2). <br /> Acute Oral LD50: ND Acute Dermal LD50: ND Aquatic Toxicology LC50: ND <br /> Emergency and First Aid Procedures: <br /> Skin: Wash with soap and water until clean. <br /> Eyes: Flush with water until irritation ceases. <br /> Inhalation: Move to area free from dust. If symptoms of irritation persist contact physician. Inhalation may aggravate <br /> existing respiratory illness. <br /> VII. HANDLING AND USE PRECAUTIONS <br /> Steps to be Taken if Material is Released or Spilled: Avoid breathing dust;wear respirator approved for silica bearing dust. Vacuum <br /> up to avoid generating airborne dust. Avoid using water. Product slippery when wetted. <br /> Waste Disposal Methods: Product should be disposed of in accordance with applicable local,state and federal regulations. <br /> Handling and Storage Precautions: Use NIOSH/MSHA respirators approved for silica bearing dust when free silica containing <br /> airborne bentonite dust levels exceed PEL/TLV's. Clean up spills promptly to avoid making dust. Storage area floors may become <br /> slippery if wetted. <br /> VIII. INDUSTRIAL HYGIENE CONTROL MEASURES <br /> Ventilation Requirements: Mechanical,general room ventilation. Use local ventilation to maintain PEL's/TLV's. <br /> Respirator: Use respirators approved by NIOSH/MSHA for silica bearing dust. <br /> Eye Protection: Generally not necessary. Personal preference. <br /> Gloves: Generally not necessary. Personal preference. <br /> Other Protective Clothing or Equipment: None <br /> IX. SPECIAL PRECAUTIONS <br /> Avoid prolonged inhalation of airborne dust. <br /> DEPARTMENT OF TRANSPORTATION HAZARDOUS MATERIAL INFORMATION <br /> Shipping Name: NA(Not Regulated) Hazard Class: NA <br /> Hazardous Substance: NA Caution Labeling: NA <br /> Date Prepared: March 15,2004 Doc#: 4335-40 <br /> All information presented herein is believed to be accurate; however, it is the user's responsibility to determine in advance of need that <br /> the information is current and suitable for their circumstances. No warranty or guarantee, expressed or implied is made by WYO-BEN, <br /> INC. as to this information, or as to the safety, toxicity or effect of the use of this product. <br />