TABLE 8.1 (continued)
Persistence Factors of TRI Chemicals
Chemical
Water
Soil
Half-Lives (yrs)
Residual
(lb)
PF
Sediment
Air
Average
Safrole
0.10
0.21
0.93
0.00
0.31
1
0.02
sec-Butyl alcohol
0.04
0.08
0.38
0.00
0.13
1
0.01
Selenium
Long
Long
Long
Long
Long
70
1.00
Sethoxydim
0.10
0.21
0.93
0.00
0.31
1
0.02
Silver
Long
Long
Long
Long
Long
70
1.00
Silver compounds
Long
Long
Long
Long
Long
70
1.00
Simazine
0.16
0.33
1.48
0.00
0.49
1
0.02
Sodium azide
0.27
0.27
0.27
0.27
0.27
1
0.02
Sodium dicamba
0.16
0.33
1.48
0.01
0.50
1
0.02
Sodium
0.04
0.08
0.38
0.00
0.13
1
0.01
dimethyldithiocarbamate
Sodium nitrite
0.03
0.03
0.03
0.03
0.03
1
0.01
Sodium O-phenylphenoxide
0.04
0.08
0.38
0.00
0.13
1
0.01
Strychnine and salts
27.40
27.40
27.40
27.40
27.40
33
0.47
Styrene
0.04
0.08
0.38
0.00
0.13
1
0.01
Styrene oxide
0.04
0.08
0.38
0.01
0.13
1
0.01
Sulfuric acid (1994 and after
0.03
0.03
0.03
0.03
0.03
1
0.01
“acid aerosols” only)
Sulfuryl fluoride
27.40
27.40
27.40
27.40
27.40
33
0.47
Tebuthiuron
0.10
0.21
0.93
0.01
0.31
1
0.02
Temephos
0.10
0.21
0.93
0.00
0.31
1
0.02
tert-Butyl alcohol
0.04
0.08
0.38
0.04
0.14
1
0.01
Tetrabromobisphenol A
0.49
0.99
4.38
0.01
1.47
3
0.04
Tetrachloroethylene
0.16
0.33
1.48
0.26
0.56
1
0.02
Tetrachlorvinphos
0.16
0.33
1.48
0.00
0.49
1
0.02
Tetracycline hydrochloride
0.16
0.33
1.48
0.00
0.49
1
0.02
Tetramethrin
0.10
0.21
0.93
0.00
0.31
1
0.02
Thallium
Long
Long
Long
Long
Long
70
1.00
Thiabendazole
0.04
0.08
0.38
0.00
0.13
1
0.01
Thioacetamide
0.04
0.08
0.38
0.00
0.13
1
0.01
Thiobencarb
0.10
0.21
0.93
0.00
0.31
1
0.02
Thiodicarb
0.10
0.21
0.93
0.00
0.31
1
0.02
Thiophanate-methyl
0.16
0.33
1.48
0.00
0.49
1
0.02
Thiourea
0.04
0.08
0.38
0.00
0.13
1
0.01
Thiram
0.10
0.21
0.93
0.00
0.31
1
0.02
Thorium dioxide
Long
Long
Long
Long
Long
70
1.00
Titanium tetrachloride
Long
Long
Long
Long
Long
70
1.00
Toluene
0.04
0.08
0.38
0.01
0.13
1
0.01
Toluene diisocyanate (mixed
0.10
0.21
0.93
0.01
0.31
1
0.02
isomers)
Toxaphene
0.49
0.99
4.38
0.02
1.47
3
0.04
continued
117
Quantifying Persistence