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EC number: 223-296-5
CAS number: 3811-73-2
on algae showed NOEC values of 0.08 mg/L for Selenastrum capricornutum
which indicates that NaPT is toxic. The LC50values range was
0.46 mg/L mg NaPT/L.
studies with the freshwater algae Anabaena flosaque using ZPT gave a
value of 0.0038 mg/L.
PSA gave much
higher values of 5.46 mg/L for the NOEC with Selenastrum.
Table 220.127.116.11: Growth inhibition effects of
NaPT on algae
Guideline /Test method
Endpoint /Type of test
Fresh water algae
Smyth et al (1994)
Table 18.104.22.168: Growth
inhibition effects of Pyridine-N-oxide-2-sulfonic acid on algae
US EPA –
11.8 (120 hr)
Boeri RL, Kowalski PL, Ward TJ (1994)
Table 22.214.171.124: Growth
inhibition effects of Pyridine Sulphonic acid on algae
Table 126.96.36.199: Growth
inhibition effects of 2,2’-(pyridyl-N-oxide) disulphide on algae
0.080 (120 hr)
0.140 (120 hr)
Ward TJ, Magazu JP, Boeri RL (1995)
The information contained within this robust summary document comes from
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protected in several regions globally. This information may not be used
for any purpose other than in support of the Chemical safety Report
submitted by Arch Chemicals Inc. under RegulationEC
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