Ecological Assessment of Storm Impacts

Data Collection

Thiram

Basic Information

Synonym(s): Polyram-Ultra; Pomarsal; Tetramethylenethiuram disulfide; tetramethylthiocarbamoyldisulfide; Tetramethylthioperoxydicarbonothioic diamide
Formula: C₆H₁₂N₂S₄
Molecular Weight: 240.414
Boiling Point (°C): 129 (20mm Hg)
Melting Point (°C): 155 - 156
Contaminant Type: Thiram is a fungicide.
Notes: Colorless to cream solid (some commercial products dyed blue). White or yellow crystals

Solubility (in water)

• Solubility: 30 mg/l ^g
  

• Solubility: 30 mg/l ^e
  Temperature (°C): 20
  

Half-Life (in soil unless otherwise noted)

• t1/2: 9.5 hours ^e
  pH Value: 3.8
  

• t1/2: 108 hours ^e
  pH Value: 5.7
  

• t1/2: 1123 hours ^e
  pH Value: 7
  

• t1/2: 3316 hours ^e
  pH Value: 8
  

Toxicity Effects

• Organism Type: Algae ^e
  Scientific Name: Chlorella pyrenoidosa
  Toxicity: 1 mg/l
  Test: 96h EC50
  

• Organism Type: Crustaceans ^e
  Common Name: Daphnia
  Scientific Name: Daphnia magna
  Toxicity: 0.21 mg/l
  Test: 48h LC50
  

• Organism Type: Fish ^e
  Common Name: Guppy
  Scientific Name: Poecilia reticulata
  Toxicity: 0.27 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Columbia River redband trout
  Scientific Name: Salmo gairdneri
  Toxicity: 1.1 µg/l
  Test: 60d LC50
  Notes: Early Life Stages

• Organism Type: Mammals ^g
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 1000 mg/kg
  Test: LD50
  

Work Cited