ARS PESTICIDE PROPERTIES DATABASE last updated May 1995

name: PYRETHRINS                     CASRN: 8003-34-7    

molecular formula: I = C12H28O3               
molecular weight: I = 328.43                     
physical state: S                      
(L=liquid; G=gas; S=solid)
reference: 9PMED9

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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):

Decomposition point (deg C):

Heat of vaporization (deg C):

--RATE CONSTANTS--

Hydrolysis (per day):

Photolysis (per day):

Vapor pressure (mPa):
0.001                                        W    

Water solubility (ppm): 
0                                            H      9PMED9
0.001                                        W    

Organic solubility (ppm):

Henrys law (Pa m3/mol):

Octanol/water partitioning (log Kow):

Acid dissociation (pKa):
                                                          

Soil sorption:
soiltype         temp.    Kd     Koc    %om    pH   reference
--------         -----    --     ---    ---    --   ---------
                                 100000*            W            

Field dissipation halflife(days):
value              test area          pH    source  reference
-----              ---------          --    ------  ---------
ca.12                                        R      6PYRET 14: 65-67 (1978)

Halflife in soil:
soiltype           aerobic  anaerobic       source  reference
--------           -------  ---------       ------  ---------

Comments:
THE TERM PYREYHRINS IS USED FOR THE SIX INSECTICIDAL CONSTITUENTS PRESENT IN
EXTRACTS OF THE FLOWERS PYRETHRUM CINERARIDEFOLIUM AND OTHER SPECIES