Propaphos

  • 4-Methylthiophenyl dipropyl phosphate
  • O,O-Di-n-propyl-O-(4-methylthiophenyl)phosphate
Formula
C13H21O4PS
Structure
Description
Colorless liquid.
Uses
Systemic insecticide with contact and stomach actions. Control of rice hoppers, rice leaf beetle, and rice water weevil.

Registry Numbers and Inventories.
CAS
7292-16-2
RTECS
TC6586000
RTECS class
Agricultural Chemical and Pesticide
UN (DOT)
3018
Beilstein/Gmelin
2990614
Beilstein Reference
5-06
Korea ECL
Listed

Properties.
Formula
C13H21O4PS
Formula mass
304.37
Boiling point, °C
364
Vapor pressure, mmHg
3.7E-5 (25 C)
Solubility in water
0.125 g/L (25 C)

Hazards and Protection.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.

Fire.
Flash Point,°C
174
Fire fighting
Small Fires: Dry chemical, CO2 or water spray. Large Fires: Water spray, fog or regular foam.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
Containers may explode when heated.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
   Inhalation
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed.
   Skin
Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
3018
Response guide
Hazard class
6.1
Std. Transport #
4921674