STRUCTURE ACTIVITY TEAM REPORT 04 January 20 02

CASE NUMBER: P02-0161

RELATED CASES:

CONCLUSIONS/DISCUSSIONS

TYPE OF CONCERN: HEALTH ECOTOX

LEVEL: 3 3

KEYWORDS: IRR-S ,E, CORROS-S,E, MUTA, SE NS-S, LIVER, DEVEL, NEURO, ONCO, AQUATOX-A,C

SUMMARY OF AS SESSMENT:

FATE:

log Kow for = -10 (SRC); S = 1000 g/L at 25 oC (P) hydrolysis half-life = weeks to months;
test data for were hydrolysis half-lif e at pH5 = 131 d
hal f-life at pH7 = 72 d
hal f-life at pH9 = 7 d via ); t herefore, mon ths (EAB); vp < 0.01 mm Hg or torr at 25 oC (P) bp > 400 C (P) H < 1.0E-8 (P) log Koc = 1.0 (P); log fish BCF = 0.50 (P);
POTW removal = 50 to 90% via sorption;
test data from for ready aerobic biodegrada tion were: 0% in 28 d via ThOD (OECD 301F - Respirometry); time for complete ultimate aerob ic biodegradation = weeks to months; sorption to soils and sediments = strong; PBT Potential : P1B1T2 *CEB FATE: migration to ground water = slow to negligible;

HEALTH: Absorption expected all routes based on based on test data, analogs, and phy sical/chemical properties;

submitted test data ap pear to be the same data submitted with which is a on the average , however, rabbit developmental toxicit y test submitt ed with was not submitted with this PMN, were:
rat acute oral MLD = 500 mg/kg with NO EL = 50 mg/kg rat acute dermal LD0 = 2.0 g/kg with moderate irritation followed by corrosion at site of application;severe irritation wi th corrosion in ski n irritation in rabbits; Ames test was positive; E. coli test w as negative; mouse micronuc leus test oral was negative; mouse lymphom a test was positive; moderate skin sensi tization in guin ea pigs (M&K); in vitro eye ir ritation test showed potential for severe irritation; rat range-finding test for 28-d subchronic (oral-gavage) LOEL = 50 mg/kg/d (lowest dose te sted) showed liver degeneration
rat 28-d subchro nic (oral-gavage) LOEL = 5 mg/kg/d (lowest dose tested) showed li ver degeneration w hich the submitted graded as minimal; liver degeneration at 15 and 40 mg/kg/d; degeneration at 40 mg/kg/d was only dose graded as significant; fabric treated with PMN substance sh owed no toxic signs;

test data for analog, , i.e., , were: rat acute oral rang e-finding test = LD 100 at 500 mg/kg and LD0 at 200 mg/ kg (1 rat/dose); rat acute oral LD0 = 500 mg /kg with no toxic signs; rat acute dermal LD0 = 2.0 g/kg with moderate ir ritation and necrosis at site of application; in vitro isolated rabbit eye t est showed significant corneal swelling at 10 s ec and 29.4% cornea l swelling at 5 h; corrosive to rabbit skin within 1 h; Ames test was positive; E. coli test w as negative; mouse micronucle us test (oral) was negative; mouse lymphoma c ells (L5178YTK+/-) bio assay was positive; moderate sensitization in guinea pigs w ith 30% response to 30% solution (M&K);
rat 28-d subch ronic (oral-gavage) NOEL = 5 mg/kg /d, LOEL = 15 mg/kg/d with liver toxicity including changes in blood chemistry, weight changes, ma croscopic and microscopic changes, and d egeneration; rabbit developme ntal toxicity fetal NO EL = 10 mg/kg/d , LOEL = 30 mg/kg/d based on a variety of effects including preimplantation losses;

concern for liver toxicity , developme ntal toxicity, mutagenicity, sk in sensitization, and severe irrit ation and corrosion to skin and eyes ba sed on submitted test data; concern for oncogen icity based on the po sitive muta genicity data;
concern for neuroto xicity based on the ;

high concern f or toxicity; *CEB HEALTH: Exp osures to humans: inhalation, dermal, potential for splashes to the eyes, drinking water;

ECOTOX: Test data submitted with in mg/L (ppm) were:fish 96-h LC50 = 3.8 M S,N p100 daphnid 48-h LC50 = 6.5 M S,N p100 green algal 96-h EC50 = 0.073 M S,N p100 algal ChV = 0.018 M S,N p100

Test data submitted with P0201 61 with some tests appearing to be identical to tests submitted with in mg /L (ppm)

were: fish 96-h LC50 = 3.8 M S,N p? fish (RT) 28-d LC50 = 3. 35 M S,N p100 daphnid 48-h LC50 = 6.5 M S,N p? green algal 96-h EC50 = 1.7 M S,N p? algal 72-h EC50 a = 0.073 M S,N p? daphnid 21-d ChV = 0.550 M SR,M p100 daphnid ACR = 12.0 M algal ChV a = 0.018 M S,N p?

The additional t est data submitted we re for the hydrolysis products with ;

Predicted (P) toxicity v alues in mg/L (ppm) are:
fish 96-h LC50 >= 0.460 P daphnid 48-h LC50 >= 6.2 P green algal 96-h EC50 >= 0.460 P fish chronic value >= 0.050 P daphnid ChV >= 0.600 P algal ChV >= 0.050 P Predictions are based on SARs fo r alkyl cation ic surfactantsquaternary with ; predictions are worst case due to less toxic lower-m olecular-weight com ponents in PMN substance; SAR chemical class = surfactant-cat ionic- ;

; ; 100% active in gredients and nominal concentrations; hardness <180 .0 mg/L as CaCO3 ; and TOC <2.0 mg/L; high concern f or toxicity;
assessment factor = 10.0 CC algae = 0.002 CC fish = 0.040 CC daphnids = 0.070 *CEB ECOTOX: All releases to water;

SAT Co-chairperson: V ince Nabholz, 564-8909