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MSDS  : Chloric acid, magnesium salt
CAS  : 10326-21-3
SYNONYMS  : * Chlorate salt of magnesium * De-fol-ate * E-Z-Off * KRMD 58 * Magnesium dichlorate * Magron * MC Defoliant * Ortho MC
*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER : FO0175000
CHEMICAL NAME : Chloric acid, magnesium salt
CAS REGISTRY NUMBER : 10326-21-3
LAST UPDATED : 199801
DATA ITEMS CITED : 11
MOLECULAR FORMULA : Cl2-O6.Mg
MOLECULAR WEIGHT : 191.21
WISWESSER LINE NOTATION : MG G-O3*2
COMPOUND DESCRIPTOR : Reproductive Effector
SYNONYMS/TRADE NAMES :
* Chlorate salt of magnesium
* De-fol-ate
* E-Z-Off
* KRMD 58
* Magnesium dichlorate
* Magron
* MC Defoliant
* Ortho MC

*** HEALTH HAZARD DATA ***

** ACUTE TOXICITY DATA **

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 6348 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O
Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936-
Volume(issue)/page/year: 48(4),68,1983

TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 1100 mg/kg
TOXIC EFFECTS :
Behavioral - convulsions or effect on seizure threshold
Cardiac - other changes
Lungs, Thorax, or Respiration - other changes
REFERENCE :
JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams &
Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10-
Volume(issue)/page/year: 35,1,1929

TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Intratracheal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 700 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
MZUZA8 Meditsinskii Zhurnal Uzbekistana. (V/O Mezhdunarodnaya Kniga, 113095
Moscow, USSR) No.1- 1957- Volume(issue)/page/year: (9),26,1959

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 5235 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O
Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936-
Volume(issue)/page/year: 48(4),68,1983

TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Intratracheal
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
MZUZA8 Meditsinskii Zhurnal Uzbekistana. (V/O Mezhdunarodnaya Kniga, 113095
Moscow, USSR) No.1- 1957- Volume(issue)/page/year: (9),26,1959

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : 8660 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O
Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936-
Volume(issue)/page/year: 48(4),68,1983

TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - guinea pig
DOSE/DURATION : 1500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
MZUZA8 Meditsinskii Zhurnal Uzbekistana. (V/O Mezhdunarodnaya Kniga, 113095
Moscow, USSR) No.1- 1957- Volume(issue)/page/year: (9),26,1959

** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 2 gm/kg/20D-I
TOXIC EFFECTS :
Brain and Coverings - other degenerative changes
Liver - hepatitis (hepatocellular necrosis), diffuse
Nutritional and Gross Metabolic - weight loss or decreased weight gain
REFERENCE :
MZUZA8 Meditsinskii Zhurnal Uzbekistana. (V/O Mezhdunarodnaya Kniga, 113095
Moscow, USSR) No.1- 1957- Volume(issue)/page/year: (9),26,1959

** REPRODUCTIVE DATA **

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 508 mg/kg
SEX/DURATION : female 1-20 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or
resorbed implants per total number of implants)
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O
Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936-
Volume(issue)/page/year: 48(4),68,1983

*** OCCUPATIONAL EXPOSURE LIMITS ***

OEL-RUSSIA:STEL 5 mg/m3 JAN 1993

*** STATUS IN U.S. ***

EPA TSCA Section 8(b) CHEMICAL INVENTORY


*** END OF RECORD ***
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