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Home » Products » Pyrethroid
Pyrethroid
  • Prallethrin

Prallethrin

  • Description:
  • Prallethrin content:

    Min. 93%.

    Appearance:

    Yellow brown to red brown viscous liquid.

    Moisture:

    Max. 0.30%.

    Acidity (as H2SO4) :

    Max. 0.30%.

  • Description

CHEMICAL IDENTIFICATION
Product name: Prallethrin
Chemical name: (S)-2-methyl-3-(2-propynyl)-4-oxocyclopent-2-enyl-(1R)cis-trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate
Chemical family: Synthetic Pyrethroids
CAS number: 23031-36-9
Molecular formula: C19H24O3
Molecular weight: 300.40
 

PHYSICAL CHEMISTRY
Purity: 93% Min.
Appearance: Yellow to brown viscous liquid.
Odour: Faint characteristic odour.
Melting point: From -16 to -18 ℃ (freezing point)
Boiling point: 313.5℃
Flash point: 133℃ (Seta closed cup)
Density: 1.03 g/mL (20℃)
Vapor pressure: 4.2 x 10-3 Pa (25℃)
Ignition Temperature: 354℃
Octanol/Water Partition Coefficient: Log Pow = 4.49 (25℃)
Solubility: Soluble in most organic solvents. Solubility in water is 8 mg/L (25℃).
Stability: Stable in weak acidic and neutral medium, but easily hydrolyze in alkaline solution; unstable to light. Can be store 2 years in normal condition.


PROPERTIES
Prallethrin has high vapor pressure. It is used for prevention and control of mosquito, fly and roach etc. In knok down and killing active, it is 4 times highter than d-allethrin. Especially it has the function to wipe out roach. It's therefore used as active ingredient mosquito-repellent insect.  Electro-thermal, mosquito repellent incense, aerosol and spraying products. The used amount in mosquito-repellent incense is 1/3 of that d-Allethrin.
 

APPLICATIONS
Coils: The recommended dosages for use in coils are between 0.05% and 0.4%.
Mats: 10 mg/mat to 40 mg/mat. Center temperature of heater controlled between 125℃-135℃.
Liquid electric thermal incense: Content 0.8% to 1.6% in mixture with stabilizer.
Aerosols: Content 0.15% to 0.6% in mixture with lethal agent, synergist and emulsifier.
 

TOXICOLOGY
Acute toxicity:
Swallowed: LD50 (male rat) = 667 mg/kg; LD50 (female rat) = 417 mg/kg.
Skin: LD50 (rat) > 2000 mg/kg.
Inhalation: LC50 male rat (4 hour) = 0.855 mg/L of air; LC50 female rat (4 hour) = 0.658 mg/L of air.
Irritancy:
Eye irritancy: Moderate irritating.
Skin irritancy: Non irritating.
Sensitisation: Non sensitising.
Long term toxicity: Non teratogenic, non mutagenic, non carcinogenic, non genotoxic.
 

PACKAGING
Prallethrin is supplied in the packaging described below:
PVF-lined Steel drums, standard size (net weight) -- 25 kg.

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