Leptophos

  • O-4-Bromo-2,5-dichlorophenyl-O-methyl phenylphosphonothioate
  • O-(2,5-Dichloro-4-bromophenyl)-O-methyl phenyl thiophosphonate
  • Oleophosvel
  • Phosphonothioic acid, phenyl-O-(4-bromo-2,5-dichlorophenyl) O-methyl ester
  • Phosvel
Formula
C13H10BrCl2O2PS
Structure
Description
White crystalline solid.
Uses
Insecticide.

Registry Numbers and Inventories.
CAS
21609-90-5
EC (EINECS/ELINCS)
244-472-8
EC Index Number
015-093-00-3
EC Class
Toxic; Harmful; Dangerous for the Environment
RTECS
TB1720000
RTECS class
Agricultural Chemical and Pesticide; Drug; Mutagen; Reproductive Effector
Merck
12,5468
Beilstein/Gmelin
2152663
EPA OPP
525300
Swiss Giftliste 1
G-7490
Austrailia AICS
Listed

Properties.
Formula
C13H10BrCl2O2PS
Formula mass
412.07
Melting point, °C
55-67
Vapor pressure, mmHg
2E-8
Density
1.53 g/cm3 (20 C)
Solubility in water
@ 25 C: 2.4 mg/L 470 g/L in acetone

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
Neoprene coated gloves; rubber workshoes or overshoes; latex rubber apron; goggles; respirator or mask approved for toxic dusts and organic vapors. Wear appropriate chemical protective clothing.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
(Non-Specific -- Organophosphorus Pesticide, n.o.s.) Stay upwind; keep out of low areas. Ventilate closed spaces before entering them. Do not touch spilled material; stop leak if you can do it without risk. Use water spray to reduce vapors. Small dry spills: with clean shovel place material into clean, dry container and cover; move containers from spill area.
Stability
Stable @ normal temperatures, stable to acids under long exposure @ normal temperature, but is slowly hydrolyzed under strongly alkaline conditions.

Fire.
Fire fighting
(Non-Specific -- Organophosphorus Pesticide, n.o.s.) Stay upwind; keep out of low areas. Move container from fire area if you can do it without risk. Fight fire from maximum distance. Dike fire control water for later disposal; do not scatter the material.(Non-Specific -- Organophosphorus Pesticide, n.o.s.) This material may burn, but does not ignite readily. For small fires, use dry chemical, carbon dioxide, water spray, or foam. For large fires, use water spray, fog, or foam.
Hazards
Container may explode in heat of fire. Decomposes above 356F. Avoid strong alkalies.

Health.
Poison_Class
3
Exposure effects
Fever, low heart rate and abnormally low blood pressure, or rapid heart rate and elevated blood pressure may occur. 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 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.

First aid
 
   Ingestion
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
   Inhalation
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
   Skin
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
   Eyes
If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Transport.
USCG CHRIS Code
LTP