Provisional Peer-Reviewed Toxicity Values (PPRTVs)

Styrene-Acrylonitrile (SAN) Trimer

CASRN VARIOUS

PPRTV Toxicity Values Summary Table

Noncancer Assessment

Estimate of Chronic Reference Dose for Oral Exposure (RfD)Last Updated: 08/11/2014
System RfD (mg/kg-day) Basis PoD UF Confidence
Hepatic ,
Nervous
3 x 10-3 Increased incidence of chronic active inflammation in males
Increased incidence of sciatic nerve degeneration in females
BMDL10 : 0.77 mg/kg-day 300 Medium
Species Studied: Rat
Duration: 2 years, postweaning
Principal Study: NTP 2012
Note: The BMDL10 of 3.2 was converted to a HEC of 0.77 mg/kg-day.



Estimate of Subchronic Reference Dose for Oral Exposure (RfD)Last Updated: 08/11/2014
System RfD (mg/kg-day) Basis PoD UF Confidence
Hepatic 8 x 10-3 Increased absolute liver weight BMDL10 : 2.4 mg/kg-day 300 Medium
Species Studied: Rat
Duration: 13 weeks, postweaning
Principal Study: NTP 2012
Note: The BMDL10 of 10 was converted to a HEC of 2.4 mg/kg-day.



Estimate of Chronic Reference Concentration for Inhalation Exposure (RfC)Last Updated: 08/11/2014
Data are inadequate to derive a chronic RfC.


Estimate of Subchronic Reference Concentration for Inhalation Exposure (RfC)Last Updated: 08/11/2014
Data are inadequate to derive a subchronic RfC.


Cancer Assessment

Weight of Evidence for CancerLast Updated: 08/11/2014
IN - Inadequate information to assess carcinogenic potential

Provisional Peer-Reviewed Toxicity Values (PPRTVs)