*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : JL6475000
CHEMICAL NAME           : Diphosphonic acid, (1-hydroxyethylidene)-,
                          tetrasodium salt
CAS REGISTRY NUMBER     : 3794-83-0
LAST UPDATED            : 199712
DATA ITEMS CITED        : 4
MOLECULAR FORMULA       : C2-H4-O7-P2.4Na
MOLECULAR WEIGHT        : 293.96
WISWESSER LINE NOTATION : QPQOYQ1OPQQ &-NA- 4
SYNONYMS/TRADE NAMES :
   * Defloc EN 43
   * Dequest 2016
   * Ethane-1-hydroxy-1,1-diphosphonic acid, tetrasodium salt
   * (1-Hydroxyethylidene)diphosphonic acid, tetrasodium salt
   * Phosphonic acid, (1-hydroxyethylidene)bis-, tetrasodium salt
   * Sequion 10Na4
   * Tarpinel 4NL
   * Tetrasodium etidronate
   * Turpinal 4NL
 
                       *** 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           : 990 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

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X1265
       No. of Facilities: 685 (estimated)
       No. of Industries: 3
       No. of Occupations: 6
       No. of Employees: 5667 (estimated)
       No. of Female Employees: 108 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY
   
   EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998

 
                            *** END OF RECORD ***