- O-4-Bromo-2,5-dichlorophenyl-O-methyl phenylphosphonothioate
- O-(2,5-Dichloro-4-bromophenyl)-O-methyl phenyl thiophosphonate
- Phosphonothioic acid, phenyl-O-(4-bromo-2,5-dichlorophenyl) O-methyl ester
White crystalline solid.
Registry Numbers and Inventories.
EC Index Number
Toxic; Harmful; Dangerous for the Environment
Agricultural Chemical and Pesticide; Drug; Mutagen; Reproductive Effector
Swiss Giftliste 1
Melting point, °C
Vapor pressure, mmHg
1.53 g/cm3 (20 C)
Solubility in water
@ 25 C: 2.4 mg/L 470 g/L in acetone
Hazards and Protection.
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.
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.
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.
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
(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.
Stable @ normal temperatures, stable to acids under long exposure @ normal temperature, but is slowly hydrolyzed under strongly alkaline conditions.
(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.
Container may explode in heat of fire. Decomposes above 356F. Avoid strong alkalies.
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.
Vomiting, hypersalivation, diarrhea, fecal incontinence and abdominal pain may occur.
Dyspnea, rales, bronchorrhea, bronchospasm, or tachypnea may be noted. Noncardiogenic pulmonary edema may occur in severe cases. Chemical pneumonitis may be seen.
Sweating is a consistent but not universal sign.
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.
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.
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
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.
USCG CHRIS Code