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MSDS  : Lactose
CAS  : 63-42-3
SYNONYMS  : * 4-(beta-D-Galactosido)-D-glucose * D-Glucose, 4-O-beta-D-galactopyranosyl- * D-Lactose * Lactin * Lactobiose * Milk sugar * Saccharum lactin
*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER : OD9625000
CHEMICAL NAME : Lactose
CAS REGISTRY NUMBER : 63-42-3
BEILSTEIN REFERENCE NO. : 0093796
REFERENCE : 4-17-00-03066 (Beilstein Handbook Reference)
LAST UPDATED : 199701
DATA ITEMS CITED : 12
MOLECULAR FORMULA : C12-H22-O11
MOLECULAR WEIGHT : 342.34
WISWESSER LINE NOTATION : T6OTJ BQ CQ DQ F1Q EO- BT6OTJ CQ DQ EQ F1Q -D
COMPOUND DESCRIPTOR : Tumorigen
Reproductive Effector
Natural Product
SYNONYMS/TRADE NAMES :
* 4-(beta-D-Galactosido)-D-glucose
* D-Glucose, 4-O-beta-D-galactopyranosyl-
* D-Lactose
* Lactin
* Lactobiose
* Milk sugar
* Saccharum lactin

*** 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 : >10 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu
Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972-
Volume(issue)/page/year: 3,2427,1975

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : >10 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu
Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972-
Volume(issue)/page/year: 3,2427,1975

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : >5 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu
Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972-
Volume(issue)/page/year: 3,2427,1975

TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Mammal - dog
DOSE/DURATION : 1500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
HBAMAK "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." (Leipzig,
Ger. Dem. Rep.) Volume(issue)/page/year: 4,1289,1935

** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 4452 gm/kg/53W-C
TOXIC EFFECTS :
Gastrointestinal - other changes
Nutritional and Gross Metabolic - weight loss or decreased weight gain
Related to Chronic Data - changes in testicular weight
REFERENCE :
JACTDZ Journal of the American College of Toxicology. (Mary Ann Liebert,
Inc., 1651 Third Ave., New York, NY 10128) V.1-12, 1982-1993. Discontinued.
Volume(issue)/page/year: 11,165,1992

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Mammal - dog
DOSE/DURATION : 41 gm/kg/26W-C
TOXIC EFFECTS :
Cardiac - changes in heart weight
Blood - pigmented or nucleated red blood cells
Blood - changes in erythrocyte (RBC) count
REFERENCE :
JACTDZ Journal of the American College of Toxicology. (Mary Ann Liebert,
Inc., 1651 Third Ave., New York, NY 10128) V.1-12, 1982-1993. Discontinued.
Volume(issue)/page/year: 11,219,1992

** TUMORIGENIC DATA **

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 1000 gm/kg/29w-C
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria
Tumorigenic - tumors at site of application
REFERENCE :
GANNA2 Gann. Japanese Journal of Cancer Research. (Tokyo, Japan) V.1-75,
1907-84. For publisher information, see JJCREP. Volume(issue)/page/year:
46,363,1955

** REPRODUCTIVE DATA **

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 375 mg/kg
SEX/DURATION : female 4-18 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - musculoskeletal system
REFERENCE :
TJADAB Teratology, The International Journal of Abnormal Development. (Alan
R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.1- 1968-
Volume(issue)/page/year: 4,497,1971

*** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
NOHS - National Occupational Hazard Survey (1974)
NOHS Hazard Code - 81715
No. of Facilities: 3594 (estimated)
No. of Industries: 19
No. of Occupations: 35
No. of Employees: 26586 (estimated)

NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - X9297
No. of Facilities: 78 (estimated)
No. of Industries: 1
No. of Occupations: 5
No. of Employees: 1207 (estimated)
No. of Female Employees: 922 (estimated)

NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - 81715
No. of Facilities: 4424 (estimated)
No. of Industries: 33
No. of Occupations: 51
No. of Employees: 132323 (estimated)
No. of Female Employees: 76197 (estimated)

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

EPA TSCA Section 8(b) CHEMICAL INVENTORY


*** END OF RECORD ***
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