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Pyrethrins Structure

Pyrethrins

Product NamePyrethrins

CAS8003-34-7

CBNumberCB2421513

MFC43H56O8

MW700.9

EINECS232-919-8

MDL NumberMFCD00078611

MOL File8003-34-7.mol

Chemical Properties

Density  0.84-0.86 g/cm3
vapor pressure  2.7×10-3 (pyrethrin I) and 5.3×10-5 (pyrethrin II) Pa
refractive index  n20/D 1.45
Flash point 75 °C
storage temp.  2-8°C
form  neat
Water Solubility  0.2 (pyrethrin I) and 9 (pyrethrin II) mg l-1 (ambient temp.)
InChIKey VXSIXFKKSNGRRO-YWUDCVDHSA-N
EPA Substance Registry System Pyrethrins (8003-34-7)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H301+H331-H312-H410
Precautionary statements P261-P273-P280-P301+P310-P302+P352+P312-P304+P340+P311
Hazard Codes  Xn,N
Risk Statements  20/21/22-50/53
Safety Statements  13-60-61
RIDADR  UN 2810 6.1/PG 3
WGK Germany  3
RTECS  UR4200000
HazardClass  6.1(b)
PackingGroup  III
Hazardous Substances Data 8003-34-7(Hazardous Substances Data)
Toxicity The six insecticidal constituents of the extract of the pyrethrum flowers Pyrethrum (Chrysanthemum cinerariaefolium). Pyrethrins I and II are most prominent, existing in the ratio 71:21:7 for pyrethrin (I and II), cinerin (I and II), jasmolin (I and II). Pyrethrins are potent, nonsystemic, contact insec_x0002_ticides, causing rapid paralysis or knockdown and death at a later stage in a variety of insects. They exhibit low vertebrate toxicity with an acute oral LD50 in rats of 1.2 g/kg. The mechanism of action involves modification of nerve membrane Na1 channels. Opening and closing of the Na1 channel is slowed, resulting in increased Na1 permeability and depolarization leading to hyperexcitability. Symptoms in humans include gastrointestinal irritation, nausea, vomiting, diarrhea, numbness of tongue and lips, syncope, hyperexcitability, incoordination, convulsions, muscular paralysis, collapse and death due to respiratory paralysis. Treatment involves gastric lavage, emetics, cathartics, demulcents, artificial respiration if necessary and short-acting barbiturates for convulsions.
IDLA 5,000 mg/m3

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Pyrethrins Chemical Properties,Usage,Production

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