1,4-Butanediol, polymer with
alpha-hydro-omega-hydroxypoly(oxy-1,4-butanediyl) and
1,1'- methylenebis(4-isocyanatocyclohexane)
CAS  
:
52292-20-3
SYNONYMS  
:
* Polyurethane Y-223
* Tecoflex HR
* Y 223
*** CHEMICAL IDENTIFICATION ***
RTECS NUMBER : EK2490000
CHEMICAL NAME : 1,4-Butanediol, polymer with
alpha-hydro-omega-hydroxypoly(oxy-1,4-butanediyl) and
1,1'- methylenebis(4-isocyanatocyclohexane)
CAS REGISTRY NUMBER : 52292-20-3
LAST UPDATED : 199701
DATA ITEMS CITED : 2
MOLECULAR FORMULA : (C15-H22-N2-O2.C4-H10-O2.(C4-H8-O)n-H2-O)x
COMPOUND DESCRIPTOR : Tumorigen
SYNONYMS/TRADE NAMES :
* Polyurethane Y-223
* Tecoflex HR
* Y 223
*** HEALTH HAZARD DATA ***
** TUMORIGENIC DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Implant
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 6750 mg/kg
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria
Tumorigenic - tumors at site of application
REFERENCE :
CNREA8 Cancer Research. (Public Ledger Building, Suit 816, 6th & Chestnut
Sts., Philadelphia, PA 19106) V.1- 1941- Volume(issue)/page/year:
35,1591,1975
*** STATUS IN U.S. ***
EPA TSCA Section 8(b) CHEMICAL INVENTORY
*** END OF RECORD ***
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