*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : QJ6480000
CHEMICAL NAME           : 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-nitroso-,
                          disodium salt
CAS REGISTRY NUMBER     : 525-05-3
LAST UPDATED            : 199709
DATA ITEMS CITED        : 3
MOLECULAR FORMULA       : C10-H5-N-O8-S2.2Na
MOLECULAR WEIGHT        : 377.26
WISWESSER LINE NOTATION : L66J BNO CQ DSWO HSWO &-NA- 2
SYNONYMS/TRADE NAMES :
   * 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt
   * Nitroso R
   * Nitroso-R salt
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intravenous
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 320 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems
   Laboratory, NIOSH Exchange Chemicals.  (Aberdeen Proving Ground, MD 21010)
   Volume(issue)/page/year: NX#05619

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOHS - National Occupational Hazard Survey (1974)
     NOHS Hazard Code - 83882
       No. of Facilities: 6 (estimated)
       No. of Industries: 1
       No. of Occupations: 1
       No. of Employees: 23 (estimated)

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

 
                            *** END OF RECORD ***