CHEMICAL IDENTIFICATION
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RTECS NUMBER :
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VV8853000
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CHEMICAL NAME :
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Silicic acid (polyortho)
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CAS REGISTRY NUMBER :
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1343-98-2
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LAST UPDATED :
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199710
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
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TYPE OF TEST :
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TCLo - Lowest published toxic concentration
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ROUTE OF EXPOSURE :
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Inhalation
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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680 mg/m3/6H/2W-I
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TOXIC EFFECTS :
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Lungs, Thorax, or Respiration - fibrosis, focal (pneumoconiosis) Lungs, Thorax, or Respiration - changes in lung weight Related to Chronic Data - death
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REFERENCE :
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FCTOD7 Food and Chemical Toxicology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.20- 1982- Volume(issue)/page/year: 29,341,1991
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TYPE OF TEST :
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TCLo - Lowest published toxic concentration
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ROUTE OF EXPOSURE :
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Inhalation
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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35 mg/m3/6H/13W-I
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TOXIC EFFECTS :
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Lungs, Thorax, or Respiration - other changes Lungs, Thorax, or Respiration - changes in lung weight Nutritional and Gross Metabolic - weight loss or decreased weight gain
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REFERENCE :
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FCTOD7 Food and Chemical Toxicology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.20- 1982- Volume(issue)/page/year: 29,341,1991 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 80288 No. of Facilities: 478 (estimated) No. of Industries: 20 No. of Occupations: 16 No. of Employees: 3828 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 80288 No. of Facilities: 6758 (estimated) No. of Industries: 58 No. of Occupations: 70 No. of Employees: 111636 (estimated) No. of Female Employees: 28296 (estimated)
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