Mephosfolan

  • AC 47470
  • D 47470
  • Cyclic propylene (diethoxy-phosphinyl)dithioimidocarbonate
  • Cyclic propylene (diethoxyphosphinyl)dithiomidocarbonate
  • Cyclic propylene p,p-diethyl phosphonodithioimidocarbonate
  • Cytro-lane
Formula
C8H16NO3PS2
Structure
Description
Yellow to amber liquid.
Uses
Has shown significant activity against certain of the more important borer insects such as european corn borer, sugar cane borer and fall armyworm.

Registry Numbers and Inventories.
CAS
950-10-7
EC (EINECS/ELINCS)
213-447-3
EC Index Number
015-094-00-9
EC Class
Very toxic; Dangerous for the Environment
RTECS
JP1050000
RTECS class
Agricultural Chemical and Pesticide
UN (DOT)
2784
Merck
12,5900
Beilstein/Gmelin
NA
EPA OPP
268310
Canada DSL/NDSL
NDSL
US TSCA
Listed

Properties.
Formula
C8H16NO3PS2
Formula mass
269.33
Boiling point, °C
120 (0.001 torr)
Density
1.539 g/cm3 (26 C)
Solubility in water
soluble
Refractive index
1.5354 (20 C)

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
(Non-Specific -- Organic Phosphate, Liquid) Use water spray to knock down vapors. Build dikes to contain material as necessary. Avoid breathing vapors. Keep upwind. Avoid bodily contact with the material. Downwind evacuation should be considered.
Stability
It is stable in water under neutral, slightly acid or basic conditions. photodegradation in an aqueous environment. Hydrolysed at pH < 2 and at pH > 9 technical. Hydrolyzed by acid or alkali.

Fire.
Fire fighting
(Non-Specific -- Organic Phosphate, Liquid) Use water spray to absorb vapors. Avoid breathing vapors. Keep upwind. Wear self-contained breathing apparatus. Avoid bodily contact with the material. Wear full protective clothing.(Non-Specific -- Organic Phosphate, Liquid) Use agent suitable for surrounding fire. Use water in flooding quantities as fog. Use foam, carbon dioxide, or dry chemical.
Fire potential
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Hazards
When heated to decomposition, this material emits very toxic fumes of nitrogen oxides, phosphorus oxides and sulfur oxides. Stable at neutral pH. Hydrolyzed by acid or alkali.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
Vital sign changes can include slow or rapid heart rate, abnormally low blood pressure, rapid breathing, respiratory paralysis or fever. Headache, dizziness, muscle spasms and profound weakness are common. Alterations of level of consciousness, anxiety, paralysis, seizures and coma may occur. Seizures may be more common in children.
   Ingestion
Vomiting, hypersalivation, diarrhea, fecal incontinence, pancreatitis and abdominal pain may occur.
   Inhalation
Dyspnea, rales, bronchorrhea, bronchospasm, or tachypnea may be noted. Noncardiogenic pulmonary edema may occur in severe cases. Chemical pneumonitis may be seen.
   Skin
Sweating is a consistent but not universal sign.
   Eyes
Constriction of the pupil, tearing, blurred vision and salivation are common. Prolonged dialation of the pupils may occur in severe poisonings. Eye irritation may occur with direct contact.

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. Remove and isolate contaminated clothing and shoes.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush with running water for at least 20 minutes. Wash skin with soap and water.
   Eyes
In case of contact with substance, immediately flush with running water for at least 20 minutes.

Transport.
UN number
2784
Response guide
Hazard class
3
Packing Group
I; II
 
USCG CHRIS Code
MFL