*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : LW9650000
CHEMICAL NAME           : Gallium oxide
CAS REGISTRY NUMBER     : 12024-21-4
LAST UPDATED            : 199701
DATA ITEMS CITED        : 9
MOLECULAR FORMULA       : Ga2-O3
MOLECULAR WEIGHT        : 187.44
SYNONYMS/TRADE NAMES :
   * Digallium trioxide
   * Gallia
   * Gallium sesquioxide
   * Gallium trioxide
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intratracheal
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 250 mg/kg
TOXIC EFFECTS :
   Lungs, Thorax, or Respiration - fibrosis, focal (pneumoconiosis)
REFERENCE :
   GTPZAB Gigiena Truda i Professional'nye Zabolevaniya.  Labor Hygiene and
   Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
   V.1-36, 1957-1992. For publisher information, see MTPEEI
   Volume(issue)/page/year: 9(6),45,1965
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 10 gm/kg
TOXIC EFFECTS :
   Peripheral Nerve and Sensation - flaccid paralysis without anesthesia
   (usually neuromuscular blockage)
   Behavioral - somnolence (general depressed activity)
   Behavioral - food intake (animal)
REFERENCE :
   GISAAA Gigiena i Sanitariya.  For English translation, see HYSAAV.  (V/O
   Mezhdunarodnaya Kniga, 113095 Moscow, USSR)  V.1-    1936-
   Volume(issue)/page/year: 45(10),13,1980
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 5 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   GTPZAB Gigiena Truda i Professional'nye Zabolevaniya.  Labor Hygiene and
   Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
   V.1-36, 1957-1992. For publisher information, see MTPEEI
   Volume(issue)/page/year: 9(6),45,1965
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Mammal - species unspecified
DOSE/DURATION           : 10 gm/kg
TOXIC EFFECTS :
   Behavioral - excitement
   Behavioral - ataxia
   Lungs, Thorax, or Respiration - respiratory depression
REFERENCE :
   GTPZAB Gigiena Truda i Professional'nye Zabolevaniya.  Labor Hygiene and
   Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
   V.1-36, 1957-1992. For publisher information, see MTPEEI
   Volume(issue)/page/year: 31(6),58,1987
 
                 ** OTHER MULTIPLE DOSE TOXICITY DATA **
 
TYPE OF TEST            : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 27 mg/m3/2H/4W-I
TOXIC EFFECTS :
   Lungs, Thorax, or Respiration - changes in lung weight
   Biochemical - Enzyme inhibition, induction, or change in blood or tissue
   levels - phosphatases
   Biochemical - Metabolism (Intermediary) - other proteins
REFERENCE :
   JTEHD6 Journal of Toxicology and Environmental Health.  (Hemisphere Pub.,
   1025 Vermont Ave., NW, Washington, DC 20005)  V.1-    1975/76-
   Volume(issue)/page/year: 27,123,1989
 
TYPE OF TEST            : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Mammal - species unspecified
DOSE/DURATION           : 107 mg/m3/4W-I
TOXIC EFFECTS :
   Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol)
   Nutritional and Gross Metabolic - weight loss or decreased weight gain
   Nutritional and Gross Metabolic - body temperature increase
REFERENCE :
   GTPZAB Gigiena Truda i Professional'nye Zabolevaniya.  Labor Hygiene and
   Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
   V.1-36, 1957-1992. For publisher information, see MTPEEI
   Volume(issue)/page/year: 31(6),58,1987
 
TYPE OF TEST            : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Mammal - species unspecified
DOSE/DURATION           : 10100 ug/m3/17W-I
TOXIC EFFECTS :
   Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol)
   Nutritional and Gross Metabolic - changes in sodium
   Nutritional and Gross Metabolic - changes in phosphorus
REFERENCE :
   GTPZAB Gigiena Truda i Professional'nye Zabolevaniya.  Labor Hygiene and
   Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
   V.1-36, 1957-1992. For publisher information, see MTPEEI
   Volume(issue)/page/year: 31(6),58,1987

                    *** OCCUPATIONAL EXPOSURE LIMITS ***
 
   OEL-RUSSIA:STEL 3 mg/m3 JAN 1993

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY

 
                            *** END OF RECORD ***