ARS PESTICIDE PROPERTIES last update May 1995 name:NITRAPYRIN CASRN: 1929-82-4 molecular formula: C6H3CL4N molecular weight : 230.9 physical state : S (L=liquid; G=gas; S=solid) reference: 9ACHB2 7TH ED.,1977 _________________________________________________________________________ Key to sources: (M)Manufacturer, (R)eview, (H)andbook, (E)xperiment, (C)alculated, (U)nknown, (P)EPA data, (W)auchope * denotes a selected value where multiple values of a property are listed. _________________________________________________________________________ -value- -medium- -temp- -pH- -source- -reference- Boiling point(deg C): - Melting point(deg C): 62 - 65 H 9ACHB2 7TH ED., 1977 Decomposition point(deg C): - Heat of vaporization(deg C): --RATE CONSTANTS-- Hydrolysis (per day): 0.090* 25 6.0 E AECTCV 7:149-158,1978 0.345 35 3.2-8.4 E AECTCV 7:149-158,1978 1.28 45 6.0 E AECTCV 7:149-158,1978 Photolysis (per day): 1.34 WATER 25 E AECTCV 7:1490158,1978 Vapor pressure (mPa): 370* 23 H 9ACHB2 7TH ED., 1977 Water solubility (ppm): -temp- -source- -reference- 40 22 C EESADV H 9ACHB2 7TH ED.,1977 92* 25 R RREVAH 85:17-27,1983 Organic solubility (ppm): 905 XYLENE M 6DOWCH Henrys law (Pa m3/mol): 0.929* 25 R RREVAH 85:17-27,1983 H 9ACHB2, 7TH ED.,1977 Octanol/water partitioning (log Kow): 3.31* M 6DOWCH 3.32 H 9PME10 Acid dissociation (pKa): Soil sorption: soiltype temp. Kd Koc %om pH source reference 172 C 8SWAMD 458 C 8BULEV 24:190-195,1980 570 R EESADV 420 R EESADV 560 R RREVAH 85:231-244,1983 R 8AOACA 386 P 8EPAGR 420 C 8SWAMD 271 C 8SWAMD 238 C 8SWAMD 437* SANDY LOAM(CA) 0.95 290 .57 6 M 6DOWCH LOAM(MS) 2.2 360 1.08 7.1 M 6DOWCH CLAY LOAM(OH) 2.0 350 9.72 6.3 M 6DOWCH SANDY LOAM(GA) 2.9 360 1.39 6.4 M 6DOWCH SILTY CLAY(IL) 5.2 250 3.53 5.4 M 6DOWCH Field Dissipation halflife(days): value test area pH source reference 10 8INSFO 25(5-89)* LOAM(MS) 22 M 6DOWCH 10* SNDY LOAM(NC) 8 M 6DOWCH 5 CLAY(ONTARIO) 5.8 M 6DOWCH 42 CLAY(ONTARIO) 5.8 M 6DOWCH 89 CLAY(ONTARIO) 5.8 M 6DOWCH 66 CLAY(ONTARIO) 5.8 M 6DOWCH 17 SLTY LOAM(ONT.) 6.7 M 6DOWCH 36 SLTY LOAM(ONT.) 6.7 M 6DOWCH 45 SNDY LOAM(MI) 6.2 M 6DOWCH 43 SNDY LOAM(MI) 6.2 M 6DOWCH 51 SNDY LOAM(MI) 6.2 M 6DOWCH 58 SNDY LOAM 5 M 6DOWCH 33 SNDY LOAM 5 M 6DOWCH 15 SNDY LOAM 5 M 6DOWCH Halflife in soil: Soiltype aerobic anaerobic source reference 25* LOAM(MS) 12 M 6DOWCH SLTY CLAY(IL) 30 M 6DOWCH CLAY(ND) 27 M 6DOWCH CLAY LOAM(NC) 5 M 6DOWCH Comments: SOIL SORPTION KOC VALUE=437(172-764); AEROBIC=25(5-89)