*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : JL6650000
CHEMICAL NAME           : Diphosphonic acid, (1-hydroxyethylidene)-, trisodium
                          salt
CAS REGISTRY NUMBER     : 2666-14-0
LAST UPDATED            : 199701
DATA ITEMS CITED        : 3
MOLECULAR FORMULA       : C2-H5-O7-P2.3Na
MOLECULAR WEIGHT        : 271.98
WISWESSER LINE NOTATION : QPQOYQ1OPQQ &-NA- 3
SYNONYMS/TRADE NAMES :
   * Ethane-1-hydroxy-1,1-diphosphonic acid, trisodium salt
   * (1-Hydroxyethylidene)diphosphonic acid, trisodium salt
   * Trisodium etidronate
 
                       *** 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           : 1280 mg/kg
TOXIC EFFECTS :
   Kidney, Ureter, Bladder - changes in both tubules and glomeruli
REFERENCE :
   TXAPA9 Toxicology and Applied Pharmacology.  (Academic Press, Inc., 1 E.
   First St., Duluth, MN 55802) V.1-    1959-  Volume(issue)/page/year:
   22,661,1972

                    *** 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 ***