251
A Program to Reduce Toxic Chemical Use
TABLE 16.1 (continued)

Proposed Chemical Usage Concentration Reporting Thresholds for
TRI Chemicals
Chemical
ETF (Doses/
Capita-lb)
Reporting
Threshold
Oryzalin
2.32E–09
1%
Osmium oxide Oso4 (T-4)
—
1%
O-Toluidine
2.10E–05
0.10%
O-Toluidine hydrochloride
1.23E–05
0.10%
Oxydemeton methyl
—
1%
Oxydiazon
1.74E–08
1%
Oxyfluorfen
2.41E–08
1%
O-Xylene
5.15E–10
1%
Ozone
—
1%
P-Anisidine
1.43E–05
0.10%
Paraldehyde
—
1%
Paraquat
8.31E–08
1%
Parathion
8.58E–09
1%
P-Chloroaniline
1.03E–05
0.10%
P-Cresidine
—
1%
P-Cresol
1.78E–08
1%
P-Dinitrobenzene
9.31E–08
1%
Pebulate
2.32E–09
1%
Pendimethalin
1.36E–09
1%
Pentachlorobenzene
6.81E–06
1%
Pentachloroethane
6.95E–05
0.10%
Pentachlorophenol
6.15E–06
1%
Peracetic acid
—
1%
Perchloromethyl mercaptan
—
1%
Permethrin
4.27E–09
1%
Phenanthrene
—
1%
Phenol
9.66E–09
1%
Phenothrin
—
1%
Phenytoin
—
1%
Phosgene
9.39E–06
1%
Phosphine
2.25E–05
0.10%
Phosphorus (yellow or white)
9.05E–07
1%
Phospohoric acid
6.14E–08
1%
Phthalic anhydride
4.97E–09
1%
Picloram
3.69E–10
1%
Piperonyl butoxide
—
1%
Pirimiphos methyl
1.16E–08
1%
P-Nitroaniline
3.30E–07
1%
P-Nitrosodiphenylamine
2.16E–06
1%
continued