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Malathion Structure

Malathion

Chemical Properties

Melting point 2.85°C
Boiling point 156°C
Density  1.2076
vapor pressure  7.95 at 25 °C (gas saturation method-GC, Kim et al., 1984)
refractive index  nD25 1.4985
Flash point -18 °C
storage temp.  APPROX 4°C
solubility  Slightly soluble in water, miscible with acetone, with cyclohexane, with ethanol (96 per cent) and with vegetable oils.
form  liquid
Specific Gravity 1.23 (25℃)
Water Solubility  0.0145 g/100 mL
Henry's Law Constant (x 10-9 atm?m3/mol): 4.89 at 25 °C (wetted-wall column, Fendinger and Glotfelty, 1990)
Exposure limits NIOSH REL: TWA 10 mg/m3, IDLH 250 mg/m3; OSHA PEL: TWA 15 mg/m3; ACGIH TLV: TWA 10 mg/m3.
Stability Stable. Incompatible with oxidizing agents, metals.
LogP 2.360
CAS DataBase Reference 121-75-5(CAS DataBase Reference)
IARC 2A (Vol. 30, Sup 7, 112) 2017
NIST Chemistry Reference Malathion(121-75-5)
EPA Substance Registry System Malathion (121-75-5)

Safety Information

Hazard Codes  Xn;N,N,Xn,F
Risk Statements  22-50/53-67-65-38-11-43
Safety Statements  2-24-60-61-62-46-37-16
RIDADR  UN 2783
RTECS  WM8400000
HazardClass  6.1(b)
PackingGroup  III
HS Code  29309090
Hazardous Substances Data 121-75-5(Hazardous Substances Data)
Toxicity LD50 in female, male rats (mg/kg): 1000, 1375 orally (Gaines)
IDLA 250 mg/m3

Usage And Synthesis