Home Categories Chemical pesticides Parathion-methyl solution
A6690412

Parathion-methyl solution , analyticalstandard,500ug/mlinchloroform , 298-00-0

Synonym(s):
O,O-Dimethyl O-(4-nitrophenyl) phosphorothioate;Methyl parathion

CAS NO.:298-00-0

Empirical Formula: C8H10NO5PS

Molecular Weight: 263.21

MDL number: MFCD00041813

EINECS: 206-050-1

Update time: 2022-07-08

PRODUCT Properties

Melting point: 36°C
Boiling point: 143°C (1.0 mmHg)
Density  1.36
vapor pressure  4.1×10-4 Pa (20 °C)
refractive index  nD25 1.5367
Flash point: 46.1°C
storage temp.  APPROX 4°C
solubility  Chloroform: Slightly Soluble,Methanol: Slightly Soluble
form  solid
Water Solubility  0.005 g/100 mL
BRN  8905814
Stability: Stable. Flammable.

Description and Uses

Methyl parathion is an organophosphate insecticide. It is converted into an oxon-containing metabolite in vivo, similar to other organophosphate pesticides, that inhibits acetylcholinesterase. Methyl parathion is lethal to lab strains and field isolates of tobacco budworm larvae (LD50s = 7 and 81.8-128.3 μg/g, respectively). It reduces the number of stink bugs (C. sayi) caught per 100 net sweeps when applied to alfalfa fields at a concentration of 0.4 pounds per acre. Methyl parathion increases sister chromatid exchange (SCE) in a concentration-dependent manner and induces cell cycle arrest at the M1 phase in V79 cells at a concentration of 40 μg/ml. It is toxic to rats (LD50 = 14 mg/kg).

Parathion-methyl is an derivative of Parathion (P192220), an organophosphate insecticide used on cotton, rice and fruit trees.

Safety

Symbol(GHS) 
GHS06,GHS08,GHS09
Signal word  Danger
Hazard statements  H300+H330-H311-H373-H410
Precautionary statements  P260-P273-P280-P302+P352+P312-P304+P340+P310-P314
Hazard Codes  T+;N,N,T+,Xn,F
Risk Statements  5-24-26/28-48/22-50/53-10-67-66-51/53-36-20/22-11-65-38
Safety Statements  28-36/37-45-60-61-26-62-16
RIDADR  UN 2052/2783/2811
OEB C
OEL TWA: 0.2 mg/m3 [skin]
WGK Germany  3
RTECS  TG0175000
HazardClass  6.1(a)
PackingGroup  II
HS Code  29201100
Toxicity LD50 in male, female rats (mg/kg): 14, 24 orally; 67, 67 dermally (Gaines)

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