Ecological Assessment of Storm Impacts

Data Collection

Diazinon

Basic Information

Synonym(s): Antigal; Basudin; Diagran; Diazajet; Diazide; Diazitol; Antigal; Basudin; Diagran; dianon; Diaterr-fos; Diazajet; Diazide; Diazinon; Diazitol
Formula: C₁₂H₂₁N₂O₃PS
Molecular Weight: 304.343
Boiling Point (°C): 306
Contaminant Type: Diazinon is an insecticide.
Notes: Colorless liquid

Solubility (in water)

• Solubility: 0.004 % ^g
  Temperature (°C): room
  

• Solubility: 40 mg/l ^e
  Temperature (°C): room
  

Half-Life (in soil unless otherwise noted)

• t1/2: 0.45 days ^e
  Temperature (°C): 18-22
  Notes: Aerobic biodegration half-life at an initial concentration of 2 ppm, using a mixture of nonacclimated sludge, field soil, and river sediment as inoculum, in a stirred flask, the major bacterial types in the activated sludge have been characterized as follows: Flavobacterium 35%; Alcaligenes 30%; Corynebacterium 20%; Pseudomonas 15%

• t1/2: 0.17 days ^e
  Temperature (°C): 40
  pH Value: 9
  Environment: Alkaline hydrolysis half-life in the dark
  

• t1/2: 14-80 days ^a
  Environment: In soil, degradation by hydrolysis and microbial degradation
  

Toxicity Effects

• Organism Type: Crustaceans ^e
  Scientific Name: Acartia tonsa
  Toxicity: 2.57 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Common Name: Daphnia
  Scientific Name: Daphnia magna
  Toxicity: 0.26 µg/l
  Test: 21d NOEC
  

• Organism Type: Crustaceans ^e
  Common Name: Daphnia
  Scientific Name: Daphnia magna
  Toxicity: 1.22-1.25 µg/l
  Test: 48h LC50
  

• Organism Type: Crustaceans ^e
  Common Name: Daphnia
  Scientific Name: Daphnia pulex
  Toxicity: 0.9 µg/l
  Test: 48h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Gammarus lacustris
  Toxicity: 200 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Gammarus pseudolimnaeus
  Toxicity: 0.27 µg/l
  Test: 30d LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Gammarus pseudolimnaeus
  Toxicity: 0.2 µg/l
  Test: 30d NOEC
  

• Organism Type: Crustaceans ^e
  Scientific Name: Simocephalus serrulatus
  Toxicity: 1.4 µg/l
  Test: 48h LC50
  

• Organism Type: Fish ^e
  Common Name: Sheepshead minnow
  Scientific Name: Cyprinodon variegatus
  Toxicity: 1.47 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Carp
  Scientific Name: Cyprinus carpio
  Toxicity: 3.18 mg/l
  Test: 24h LC50,S
  

• Organism Type: Fish ^e
  Common Name: Carp
  Scientific Name: Cyprinus carpio
  Toxicity: 3.2 mg/l
  Test: 48h LC50
  

• Organism Type: Fish ^e
  Common Name: Carp
  Scientific Name: Cyprinus carpio
  Toxicity: 3.14 mg/l
  Test: 48h LC50,S
  

• Organism Type: Fish ^e
  Common Name: Carp
  Scientific Name: Cyprinus carpio
  Toxicity: 3.11 mg/l
  Test: 72h LC50,S
  

• Organism Type: Fish ^e
  Common Name: Flagfish
  Scientific Name: Jordanella floridae
  Toxicity: 1.5-1.8 mg/l
  Test: 96h LC50,F
  

• Organism Type: Fish ^e
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 0.052 mg/l
  Test: 24h LC50
  

• Organism Type: Fish ^e
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 0.17-0.53 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 0.44-0.48 mg/l
  Test: 96h LC50,F
  

• Organism Type: Fish ^e
  Common Name: Inland silverside, tidewater silverside
  Scientific Name: Menidia beryllina
  Toxicity: 4.8 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 0.38 mg/l
  Test: 24h LC50
  

• Organism Type: Fish ^e
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 1.35 mg/l
  Test: 96h LC50
  Formulation: technical grade
  

• Organism Type: Fish ^e
  Common Name: Fathead minnow
  Scientific Name: Pimephales promelas
  Toxicity: 9.4 mg/l
  Test: 4d LC50
  

• Organism Type: Fish ^e
  Common Name: Fathead minnow
  Scientific Name: Pimephales promelas
  Toxicity: 3.7-10 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Fathead minnow
  Scientific Name: Pimephales promelas
  Toxicity: 0.12 mg/l
  Test: 96h LC50
  Formulation: technical grade
  

• Organism Type: Fish ^e
  Common Name: Fathead minnow
  Scientific Name: Pimephales promelas
  Toxicity: 6.8-10 mg/l
  Test: 96h LC50,F
  

• Organism Type: Fish ^e
  Common Name: Brook trout
  Scientific Name: Salvelinus fontinalis
  Toxicity: 0.45-1.05 mg/l
  Test: 96h LC50,F
  

• Organism Type: Mammals ^c
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 66 mg/kg
  Test: Acute oral LD50
  Formulation: Diazinon 5G
  

• Organism Type: Mammals ^g
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 1250 mg/kg
  Test: LD50
  

Octanol-Water Partition Coefficients

• Log Kow: 1.92/3.14 ^e
  

Work Cited