CHEMICAL IDENTIFICATION
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RTECS NUMBER :
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VV9275000
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CHEMICAL NAME :
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Silicic acid (H2SiO3), disodium salt
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CAS REGISTRY NUMBER :
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6834-92-0
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LAST UPDATED :
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199710
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DATA ITEMS CITED :
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18
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MOLECULAR FORMULA :
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O3-Si.2Na
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MOLECULAR WEIGHT :
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122.07
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WISWESSER LINE NOTATION :
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NA2 SI-O3
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
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TYPE OF TEST :
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Standard Draize test
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ROUTE OF EXPOSURE :
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Administration onto the skin
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SPECIES OBSERVED :
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Human
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REFERENCE :
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TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 31,481,1975
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TYPE OF TEST :
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Standard Draize test
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ROUTE OF EXPOSURE :
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Administration onto the skin
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SPECIES OBSERVED :
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Rodent - rabbit
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REFERENCE :
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TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 31,481,1975
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TYPE OF TEST :
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Standard Draize test
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ROUTE OF EXPOSURE :
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Administration onto the skin
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SPECIES OBSERVED :
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Rodent - guinea pig
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REFERENCE :
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TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 31,481,1975 ** ACUTE TOXICITY DATA **
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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1153 mg/kg
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TOXIC EFFECTS :
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Gastrointestinal - ulceration or bleeding from stomach Gastrointestinal - ulceration or bleeding from duodenum Gastrointestinal - ulceration or bleeding from small intestine
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REFERENCE :
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TOLED5 Toxicology Letters. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1977- Volume(issue)/page/year: 31(Suppl),44,1986
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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770 mg/kg
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TOXIC EFFECTS :
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Gastrointestinal - ulceration or bleeding from stomach Gastrointestinal - ulceration or bleeding from duodenum Gastrointestinal - ulceration or bleeding from small intestine
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REFERENCE :
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TOLED5 Toxicology Letters. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1977- Volume(issue)/page/year: 31(Suppl),44,1986
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TYPE OF TEST :
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LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Mammal - dog
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DOSE/DURATION :
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250 mg/kg
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TOXIC EFFECTS :
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Lungs, Thorax, or Respiration - other changes Gastrointestinal - other changes Kidney, Ureter, Bladder - other changes
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REFERENCE :
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FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 14,78,1976
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TYPE OF TEST :
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LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Mammal - pig
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DOSE/DURATION :
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250 mg/kg
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TOXIC EFFECTS :
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Details of toxic effects not reported other than lethal dose value
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REFERENCE :
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FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 14,78,1976
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TYPE OF TEST :
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LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
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Intraperitoneal
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SPECIES OBSERVED :
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Rodent - guinea pig
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DOSE/DURATION :
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200 mg/kg
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TOXIC EFFECTS :
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Details of toxic effects not reported other than lethal dose value
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REFERENCE :
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JAMAAP JAMA, Journal of the American Medical Association. (AMA, 535 N. Dearborn St., Chicago, IL 60610) V.1- 1883- Volume(issue)/page/year: 111,1925,1938 ** REPRODUCTIVE DATA **
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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DOSE :
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15 gm/kg
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SEX/DURATION :
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male 14 week(s) pre-mating female 14 week(s) pre-mating - 3 week(s) post-birth
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TOXIC EFFECTS :
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Reproductive - Effects on Newborn - stillbirth Reproductive - Effects on Newborn - live birth index (measured after birth) Reproductive - Effects on Newborn - weaning or lactation index (e.g., # alive at weaning per # alive at day 4)
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REFERENCE :
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JANSAG Journal of Animal Science. (American Soc. of Animal Science, 309 W. Clark St., Champaign, IL 61820) V.1- 1942- Volume(issue)/page/year: 36,271,1973
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Subcutaneous
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DOSE :
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9766 ug/kg
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SEX/DURATION :
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male 1 day(s) pre-mating
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TOXIC EFFECTS :
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Reproductive - Paternal Effects - testes, epididymis, sperm duct
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REFERENCE :
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JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot, POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960- Volume(issue)/page/year: 7,21,1964
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Intratesticular
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DOSE :
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9766 ug/kg
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SEX/DURATION :
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male 1 day(s) pre-mating
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TOXIC EFFECTS :
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Reproductive - Paternal Effects - testes, epididymis, sperm duct
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REFERENCE :
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JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot, POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960- Volume(issue)/page/year: 7,21,1964 *** REVIEWS *** TOXICOLOGY REVIEW NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: PB-287-766 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 80079 No. of Facilities: 97326 (estimated) No. of Industries: 300 No. of Occupations: 154 No. of Employees: 838120 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 80079 No. of Facilities: 59514 (estimated) No. of Industries: 281 No. of Occupations: 164 No. of Employees: 971688 (estimated) No. of Female Employees: 275947 (estimated)
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