Ecological Assessment of Storm Impacts

Data Collection

Naled

Basic Information

Synonym(s): Alvora; Dibrom; Dibromfos; Dimethyl 1,2-dibromo-2,2-dichloroethyl phosphate; Dimethyl O-(1,2-dibromo-2,2-dichloroethyl) phosphate; Bromchlorphos; bromochlorphos, Dimethyl-1,2-dibromo-2,2-dichlorethyl
Formula: C₄H₇Br₂Cl₂O₄P
Molecular Weight: 380.785
Boiling Point (°C): 110 at 0.5 mm Hg
Melting Point (°C): 27
Contaminant Type: Naled is an insecticide.
Notes: Colorless solid or straw-colored liquid with a slightly pungent odor

Solubility (in water)

• Solubility: <1 mg/l ^h
  Temperature (°C): 20
  

Half-Life (in soil unless otherwise noted)

• t1/2: <1 day ^h
  Notes: It rapidly degrades in the presence of sunlight to dichlorvos. Naled is not strongly bound to soils, but is not highly soluble in water. It is rapidly broken down if wet, and it is moderately volatile. Soil microorganisms break down most of the naled in the soil. It therefore should not present a hazard to groundwater.

Toxicity Effects

• Organism Type: Birds ^ah
  Common Name: Mallard
  Scientific Name: Anas platyrhynchos
  Toxicity: 2724 ppm
  Test: 96h LC50
  Formulation: Dibrom
  

• Organism Type: Birds ^ah
  Common Name: Mallard
  Scientific Name: Anas platyrhynchos
  Toxicity: 52.2 mg/kg
  Test: LD50
  Formulation: Dibrom
  

• Organism Type: Birds ^h
  Common Name: Bird
  Scientific Name: Aves (Class)
  Toxicity: 59 mg/kg
  Test: LD50
  Notes: chicken

• Organism Type: Birds ^h
  Common Name: Canada Goose
  Scientific Name: Branta canadensis
  Toxicity: 36-50 mg/kg
  Test: LD50
  

• Organism Type: Birds ^h
  Common Name: ring-necked pheasant
  Scientific Name: Phasianus colchicus
  Toxicity: 120 mg/kg
  Test: LD50
  

• Organism Type: Birds ^h
  Common Name: sharp-tailed grouse
  Scientific Name: Tympanuchus phasianellus
  Toxicity: 65 mg/kg
  Test: LD50
  

• Organism Type: Crustaceans ^ah
  Common Name: Daphnia
  Scientific Name: Daphnia magna
  Toxicity: 0.3 µg/l
  Test: 48h EC50
  Formulation: Dibrom
  

• Organism Type: Crustaceans ^h
  Common Name: Daphnia
  Scientific Name: Daphnia magna
  Toxicity: 0.4 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Common Name: Daphnia
  Scientific Name: Daphnia pulex
  Toxicity: 0.35 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Gammarus fasciatus
  Toxicity: 14 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Gammarus lacustris
  Toxicity: 110 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Orconectes nais
  Toxicity: 1800 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Common Name: Mississippi grass shrimp
  Scientific Name: Palaemonetes kadiakensis
  Toxicity: 90 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Simocephalus serrulatus
  Toxicity: 1.1 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Goldfish
  Scientific Name: Carassius auratus
  Toxicity: 2-4 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Carp
  Scientific Name: Cyprinus carpio
  Toxicity: 1.3 mg/l
  Test: 48h LC50
  

• Organism Type: Fish ^e
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 180 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 2.2 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Largemouth bass
  Scientific Name: Micropterus salmoides
  Toxicity: 1.9 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Cutthroat trout
  Scientific Name: Oncorhynchus clarkii
  Toxicity: 0.127 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 0.195 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^ah
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 132-195 µg/l
  Test: 96h LC50
  Formulation: Dibrom
  

• Organism Type: Fish ^h
  Common Name: Fathead minnow
  Scientific Name: Pimephales promelas
  Toxicity: 3.3 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Columbia River redband trout
  Scientific Name: Salmo gairdneri
  Toxicity: 132 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Lake trout
  Scientific Name: Salvelinus namaycush
  Toxicity: 0.087 mg/l
  Test: 96h LC50
  

• Organism Type: Mammals ^ah
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Gender: Male
  Toxicity: 191 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^h
  Common Name: Mouse
  Scientific Name: Muridae (Family)
  Toxicity: 330-375 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^h
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 91-430 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^ah
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Gender: Female
  Toxicity: 92 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^h
  Common Name: mule deer
  Scientific Name: Odocoileus hemionus
  Toxicity: 200 mg/kg
  Test: LD50
  

Work Cited