Parathion suppliers
Parathion
- CAS:
- 56-38-2
- MF:
- C10H14NO5PS
- MW:
- 291.26
Properties
- Melting point:
- 6.1°C
- Boiling point:
- 375°C
- Density
- 1.26
- vapor pressure
- 0.470 at 20 °C, 0.942 at 25 °C, 1.84 at 30 °C, 3.53 at 35 °C, 6.62 at 40 °C, 12.18 at 45 °C (gassaturation method, Spencer et al., 1979)
- refractive index
- nD25 1.5370
- Flash point:
- 120 °C
- storage temp.
- APPROX 4°C
- solubility
- 2,900 and 2,700 g/kg in petroleum ether and heptane, respectively (Williams, 1951)
- form
- liquid
- color
- Pale-yellow liquid
- Water Solubility
- Slightly soluble
- Merck
- 13,7105
- BRN
- 8912188
- Henry's Law Constant
- 8.56 at 25 °C (wetted-wall column, Fendinger and Glotfelty, 1990)
- Exposure limits
- NIOSH REL: TWA 0.05 mg/m3, IDLH 10 mg/m3; OSHA PEL: TWA 0.1 mg/m3.
- Stability:
- Hygroscopic, Moisture Sensitive
Safety Information
- Symbol(GHS)
GHS06,GHS08,GHS09
- Signal word
- Danger
- Hazard statements
- H300+H310+H330-H372-H410
- Precautionary statements
- P262-P273-P280-P302+P352+P310-P304+P340+P310-P314
- Hazard Codes
- T+;N,N,T+,Xn,F
- Risk Statements
- 24-26/28-48/25-50/53-67-65-38-11
- Safety Statements
- 28-36/37-45-60-61-62-16
- RIDADR
- UN 3278
- WGK Germany
- 3
- RTECS
- TF4550000
- HazardClass
- 6.1(a)
- PackingGroup
- I
- HS Code
- 29201100
- Toxicity
- LD50 in female, male rats (mg/kg): 3.6, 13 orally; 6.8, 21 dermally (Gaines)
- IDLA
- 10 mg/m3
Use
Pure parathion is a pale yellow liquid with a faint odor of garlic, while technical parathion is a deep brown to yellow liquid. It is sparingly soluble in water, but soluble in alcohols, aromatic hydrocarbons, esters, ethers, n-hexane, dichloromethane, 2-propanol, toluene,and ketones. Parathion is one of the most acutely toxic pesticides and the US EPA has classifi ed parathion as an RUP, meaning it should only be handled by qualifi ed, trained, and certifi ed workers. In January 1992, the US EPA announced the cancellation of parathion for all uses on fruit, nut, and vegetable crops. Parathion was used for the control of pests of fruits, nuts, and vegetable crops. The only uses retained are those on alfalfa, barley, corn, cotton, sorghum, soybeans, sunfl owers, and wheat. Further, to reduce exposure of agricultural workers, parathion may only be applied to these crops by commercially certifi ed aerial applicators and treated crops may not be harvested by hand. Parathion is a broad spectrum, organophosphate pesticide used to control many insects and mites.
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