CHEMICAL IDENTIFICATION
-
RTECS NUMBER :
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RA1225000
-
CHEMICAL NAME :
-
Nitrous acid, sodium salt
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CAS REGISTRY NUMBER :
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7632-00-0
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LAST UPDATED :
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199712
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DATA ITEMS CITED :
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133
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MOLECULAR FORMULA :
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N-O2.Na
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MOLECULAR WEIGHT :
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69.00
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WISWESSER LINE NOTATION :
-
NA N-O-O
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
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TYPE OF TEST :
-
Standard Draize test
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ROUTE OF EXPOSURE :
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Administration into the eye
-
SPECIES OBSERVED :
-
Rodent - rabbit
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Human
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DOSE/DURATION :
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14 mg/kg
-
TOXIC EFFECTS :
-
Behavioral - changes in motor activity (specific assay) Vascular - regional or general arteriolar or venous dilation Gastrointestinal - nausea or vomiting
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TYPE OF TEST :
-
LDLo - Lowest published lethal dose
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Human - man
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DOSE/DURATION :
-
321 mg/kg
-
TOXIC EFFECTS :
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Behavioral - coma Lungs, Thorax, or Respiration - cyanosis Blood - methemoglobinemia-carboxyhemoglobin
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TYPE OF TEST :
-
TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Human - man
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DOSE/DURATION :
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1714 ug/kg/70M
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TOXIC EFFECTS :
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Cardiac - pulse rate increase, without fall in BP Vascular - BP lowering not characterized in autonomic section
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TYPE OF TEST :
-
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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Human
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DOSE/DURATION :
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71 mg/kg
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TOXIC EFFECTS :
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Behavioral - coma Gastrointestinal - nausea or vomiting Blood - methemoglobinemia-carboxyhemoglobin
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TYPE OF TEST :
-
LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
-
Oral
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SPECIES OBSERVED :
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Human - child
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DOSE/DURATION :
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22 mg/kg
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TOXIC EFFECTS :
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Vascular - other changes
-
TYPE OF TEST :
-
LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
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DOSE/DURATION :
-
180 mg/kg
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TOXIC EFFECTS :
-
Details of toxic effects not reported other than lethal dose value
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TYPE OF TEST :
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LC50 - Lethal concentration, 50 percent kill
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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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5500 ug/m3/4H
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TOXIC EFFECTS :
-
Details of toxic effects not reported other than lethal dose value
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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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Subcutaneous
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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96600 ug/kg
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TOXIC EFFECTS :
-
Details of toxic effects not reported other than lethal dose value
-
TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Intravenous
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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65 mg/kg
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TOXIC EFFECTS :
-
Details of toxic effects not reported other than lethal dose value
-
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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175 mg/kg
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TOXIC EFFECTS :
-
Vascular - BP lowering not characterized in autonomic section Vascular - regional or general arteriolar or venous dilation
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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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Intraperitoneal
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SPECIES OBSERVED :
-
Rodent - mouse
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DOSE/DURATION :
-
158 mg/kg
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TOXIC EFFECTS :
-
Details of toxic effects not reported other than lethal dose value
-
TYPE OF TEST :
-
LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
-
Subcutaneous
-
SPECIES OBSERVED :
-
Rodent - mouse
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DOSE/DURATION :
-
150 mg/kg
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TOXIC EFFECTS :
-
Behavioral - excitement Lungs, Thorax, or Respiration - respiratory stimulation Gastrointestinal - nausea or vomiting
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TYPE OF TEST :
-
LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
-
Oral
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SPECIES OBSERVED :
-
Mammal - dog
-
DOSE/DURATION :
-
330 mg/kg
-
TOXIC EFFECTS :
-
Details of toxic effects not reported other than lethal dose value
-
TYPE OF TEST :
-
LDLo - Lowest published lethal dose
-
ROUTE OF EXPOSURE :
-
Subcutaneous
-
SPECIES OBSERVED :
-
Mammal - dog
-
DOSE/DURATION :
-
60 mg/kg
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TOXIC EFFECTS :
-
Peripheral Nerve and Sensation - flaccid paralysis without anesthesia (usually neuromuscular blockage) Behavioral - convulsions or effect on seizure threshold Gastrointestinal - nausea or vomiting
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TYPE OF TEST :
-
LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
-
Intravenous
-
SPECIES OBSERVED :
-
Mammal - dog
-
DOSE/DURATION :
-
15 mg/kg
-
TOXIC EFFECTS :
-
Details of toxic effects not reported other than lethal dose value
-
TYPE OF TEST :
-
LDLo - Lowest published lethal dose
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Mammal - cat
-
DOSE/DURATION :
-
1500 mg/kg
-
TOXIC EFFECTS :
-
Details of toxic effects not reported other than lethal dose value
-
TYPE OF TEST :
-
LDLo - Lowest published lethal dose
-
ROUTE OF EXPOSURE :
-
Subcutaneous
-
SPECIES OBSERVED :
-
Mammal - cat
-
DOSE/DURATION :
-
35 mg/kg
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TOXIC EFFECTS :
-
Lungs, Thorax, or Respiration - dyspnea Lungs, Thorax, or Respiration - cyanosis Gastrointestinal - changes in structure or function of salivary glands
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TYPE OF TEST :
-
LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rabbit
-
DOSE/DURATION :
-
186 mg/kg
-
TOXIC EFFECTS :
-
Details of toxic effects not reported other than lethal dose value
-
TYPE OF TEST :
-
LDLo - Lowest published lethal dose
-
ROUTE OF EXPOSURE :
-
Subcutaneous
-
SPECIES OBSERVED :
-
Rodent - rabbit
-
DOSE/DURATION :
-
60 mg/kg
-
TOXIC EFFECTS :
-
Details of toxic effects not reported other than lethal dose value
-
TYPE OF TEST :
-
LDLo - Lowest published lethal dose
-
ROUTE OF EXPOSURE :
-
Intravenous
-
SPECIES OBSERVED :
-
Rodent - rabbit
-
DOSE/DURATION :
-
80 mg/kg
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TOXIC EFFECTS :
-
Peripheral Nerve and Sensation - spastic paralysis with or without sensory change Behavioral - coma Kidney, Ureter, Bladder - urine volume increased
-
TYPE OF TEST :
-
LDLo - Lowest published lethal dose
-
ROUTE OF EXPOSURE :
-
Subcutaneous
-
SPECIES OBSERVED :
-
Amphibian - frog
-
DOSE/DURATION :
-
1 gm/kg
-
TOXIC EFFECTS :
-
Details of toxic effects not reported other than lethal dose value
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
22500 mg/kg/90D-C
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TOXIC EFFECTS :
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Liver - other changes Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - other transferases
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
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DOSE/DURATION :
-
17080 mg/kg/61D-C
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TOXIC EFFECTS :
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Brain and Coverings - changes in surface EEG Behavioral - somnolence (general depressed activity) Blood - methemoglobinemia-carboxyhemoglobin
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TYPE OF TEST :
-
TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
4477 mg/kg/26W-I
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TOXIC EFFECTS :
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Blood - methemoglobinemia-carboxyhemoglobin Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - dehydrogenases Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - transaminases
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
134 gm/kg/64W-C
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TOXIC EFFECTS :
-
Nutritional and Gross Metabolic - weight loss or decreased weight gain
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TYPE OF TEST :
-
TCLo - Lowest published toxic concentration
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ROUTE OF EXPOSURE :
-
Inhalation
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
300 ug/m3/4H/30D-I
-
TOXIC EFFECTS :
-
Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - catalases
-
TYPE OF TEST :
-
TCLo - Lowest published toxic concentration
-
ROUTE OF EXPOSURE :
-
Inhalation
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
125 ug/m3/22W-I
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TOXIC EFFECTS :
-
Brain and Coverings - recordings from specific areas of CNS Blood - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Intraperitoneal
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SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
960 mg/kg/30D-I
-
TOXIC EFFECTS :
-
Liver - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - catalases Related to Chronic Data - death
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
185 gm/kg/61W-C
-
TOXIC EFFECTS :
-
Lungs, Thorax, or Respiration - changes in lung weight Liver - changes in liver weight Nutritional and Gross Metabolic - weight loss or decreased weight gain
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
2190 gm/kg/2Y-C
-
TOXIC EFFECTS :
-
Tumorigenic - Carcinogenic by RTECS criteria Gastrointestinal - tumors
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - mouse
-
DOSE/DURATION :
-
2149 mg/kg male 2 week(s) pre-mating female 2 week(s) pre-mating - 3 week(s) post-birth
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TOXIC EFFECTS :
-
Tumorigenic - Carcinogenic by RTECS criteria Reproductive - Tumorigenic effects - transplacental tumorigenesis Lungs, Thorax, or Respiration - tumors
-
TYPE OF TEST :
-
TD - Toxic dose (other than lowest)
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
63 gm/kg/95W-C
-
TOXIC EFFECTS :
-
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Gastrointestinal - tumors
-
TYPE OF TEST :
-
TD - Toxic dose (other than lowest)
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
91 gm/kg/2Y-C
-
TOXIC EFFECTS :
-
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Skin and Appendages - tumors Reproductive - Tumorigenic effects - testicular tumors
-
TYPE OF TEST :
-
TD - Toxic dose (other than lowest)
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
183 gm/kg/2Y-C
-
TOXIC EFFECTS :
-
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Skin and Appendages - tumors Reproductive - Tumorigenic effects - testicular tumors
-
TYPE OF TEST :
-
TD - Toxic dose (other than lowest)
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
100 gm/kg/2Y-I
-
TOXIC EFFECTS :
-
Tumorigenic - neoplastic by RTECS criteria Liver - tumors
-
TYPE OF TEST :
-
TD - Toxic dose (other than lowest)
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
40 gm/kg/56W-C
-
TOXIC EFFECTS :
-
Tumorigenic - neoplastic by RTECS criteria Liver - tumors
-
TYPE OF TEST :
-
TD - Toxic dose (other than lowest)
-
ROUTE OF EXPOSURE :
-
Oral
-
SPECIES OBSERVED :
-
Rodent - rat
-
DOSE/DURATION :
-
365 gm/kg/2Y-I
-
TOXIC EFFECTS :
-
Tumorigenic - Carcinogenic by RTECS criteria Gastrointestinal - tumors
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
DOSE :
-
660 mg/kg
-
SEX/DURATION :
-
female 1-22 day(s) after conception
-
TOXIC EFFECTS :
-
Reproductive - Effects on Embryo or Fetus - fetal death Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain)
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
DOSE :
-
11 gm/kg
-
SEX/DURATION :
-
female 1-22 day(s) after conception lactating female 21 day(s) post-birth
-
TOXIC EFFECTS :
-
Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain) Reproductive - Effects on Newborn - biochemical and metabolic Reproductive - Effects on Newborn - other postnatal measures or effects
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
DOSE :
-
10280 mg/kg
-
SEX/DURATION :
-
female 1-22 day(s) after conception lactating female 20 day(s) post-birth
-
TOXIC EFFECTS :
-
Reproductive - Effects on Newborn - weaning or lactation index (e.g., # alive at weaning per # alive at day 4)
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
DOSE :
-
6080 mg/kg
-
SEX/DURATION :
-
lactating female 20 day(s) post-birth
-
TOXIC EFFECTS :
-
Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain) Reproductive - Effects on Newborn - other postnatal measures or effects
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Intraperitoneal
-
DOSE :
-
400 mg/kg
-
SEX/DURATION :
-
female 10-19 day(s) after conception
-
TOXIC EFFECTS :
-
Reproductive - Specific Developmental Abnormalities - Central Nervous System Reproductive - Specific Developmental Abnormalities - blood and lymphatic systems (including spleen and marrow) Reproductive - Effects on Newborn - behavioral
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
DOSE :
-
280 mg/kg
-
SEX/DURATION :
-
female 1-14 day(s) after conception
-
TOXIC EFFECTS :
-
Reproductive - Specific Developmental Abnormalities - blood and lymphatic systems (including spleen and marrow)
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
DOSE :
-
1200 mg/kg
-
SEX/DURATION :
-
female 6-15 day(s) after conception
-
TOXIC EFFECTS :
-
Reproductive - Fertility - pre-implantation mortality (e.g. reduction in number of implants per female; total number of implants per corpora lutea) Reproductive - Effects on Embryo or Fetus - fetal death
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
DOSE :
-
1680 mg/kg
-
SEX/DURATION :
-
male 14 day(s) pre-mating
-
TOXIC EFFECTS :
-
Reproductive - Fertility - male fertility index (e.g. # males impregnating females per # males exposed to fertile nonpregnant females)
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Oral
-
DOSE :
-
840 mg/kg
-
SEX/DURATION :
-
male 14 day(s) pre-mating
-
TOXIC EFFECTS :
-
Reproductive - Paternal Effects - spermatogenesis (incl. genetic material, sperm morphology, motility, and count)
-
TYPE OF TEST :
-
TDLo - Lowest published toxic dose
-
ROUTE OF EXPOSURE :
-
Intravenous
-
DOSE :
-
36 mg/kg
-
SEX/DURATION :
-
female 30-31 week(s) after conception
-
TOXIC EFFECTS :
-
Reproductive - Effects on Embryo or Fetus - other effects to embryo
-
TYPE OF TEST :
-
Specific locus test
-
TYPE OF TEST :
-
Cytogenetic analysis
-
TYPE OF TEST :
-
Cytogenetic analysis
-
TYPE OF TEST :
-
Cytogenetic analysis
-
TYPE OF TEST :
-
Cytogenetic analysis
-
TYPE OF TEST :
-
Sister chromatid exchange
-
TYPE OF TEST :
-
Sperm Morphology
-
TYPE OF TEST :
-
Micronucleus test
-
TYPE OF TEST :
-
Morphological transformation
-
TYPE OF TEST :
-
Mutation in mammalian somatic cells
MUTATION DATA
-
TYPE OF TEST :
-
DNA damage
-
TEST SYSTEM :
-
Mammal - species unspecified Lymphocyte
-
DOSE/DURATION :
-
1 mol
-
REFERENCE :
-
JCPBAN Journal de Chimie Physique et de Physico-Chimie Biologique. (CDR-Centrale des Revues, 11, rue Gossin, F-92543 Montrouge Cedex, France) V.1- 1903- Volume(issue)/page/year: 58,1005,1961 *** REVIEWS *** TOXICOLOGY REVIEW JSFAAE Journal of the Science of Food and Agriculture. (Blackwell Scientific Pub. Inc., 52 Beacon St., Boston, MA 02108) V.1- 1950- Volume(issue)/page/year: 26,1761,1975 TOXICOLOGY REVIEW FNSCA6 Forensic Science. (Lausanne, Switzerland) V.1-11, 1972-78. For pub lisher information, see FSINDR. Volume(issue)/page/year: 2,67,1973 *** 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 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-HUNGARY:STEL 1 mg/m3;Skin JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 69230 No. of Facilities: 40763 (estimated) No. of Industries: 229 No. of Occupations: 127 No. of Employees: 389731 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 69230 No. of Facilities: 47686 (estimated) No. of Industries: 250 No. of Occupations: 169 No. of Employees: 928532 (estimated) No. of Female Employees: 274167 (estimated)
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