Cyanophos

  • Ciafos
  • BAY 34727
  • Sumitomo S 4084
  • O,O-Dimethyl O-(p-cyanophenyl) phosphorothioate
  • o-(4-Cyanophenyl) O,O-dimethylphosphorothioate
  • Phosphorothioic acid, O-(4-cyanophenyl) O,O-dimethyl ester
Formula
C9H10NO3PS
Structure
Description
Yellow to reddish-yellow transparent liquid.
Uses
Insecticide.

Registry Numbers and Inventories.
CAS
2636-26-2
EC (EINECS/ELINCS)
220-130-3
EC Index Number
015-087-00-0
EC Class
Harmful; Dangerous for the Environment
RTECS
TF7600000
RTECS class
Agricultural Chemical and Pesticide
Merck
12,2321
Beilstein/Gmelin
2695901
EPA OPP
268200
Swiss Giftliste 1
G-5149
Japan ENCS (MITI)
Listed

Properties.
Formula
C9H10NO3PS
Formula mass
243.22
Melting point, °C
14-15
Boiling point, °C
119-120 (0.09 torr)
Vapor pressure, mmHg
0.0008 (25 C)
Density
1.255-1.265 g/cm3 (25 C)
Solubility in water
Insoluble
Refractive index
1.5404 (20 C)
Partition coefficient, pKow
2.71

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
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
(Non-Specific -- Organophosphorus Pesticide, Liquid, n.o.s.) Stay upwind; keep out of low areas. Ventilate closed spaces before entering them. Remove and isolate contaminated clothing at the site. Do not touch spilled material. Use water spray to reduce vapors. Take up small spills with sand or other noncombustible absorbent material and place in containers for later disposal. Dike far ahead of large spills for later disposal.
Stability
Stable to storage > 2 yr under normal conditions.

Fire.
Flash Point,°C
104
Fire fighting
(Non-Specific -- Organophosphorus Pesticide, Liquid, 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. Wear positive pressure breathing apparatus and special protective clothing.(Non-Specific -- Organophosphorus Pesticide, Liquid, 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.

Health.
Poison_Class
4
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, diarrhea, fecal incontinence, and abdominal pain may occur.
   Inhalation
Dyspnea, rales, bronchorrhea, or tachypnea may be noted. Pulmonary edema may occur in severe cases.
   Skin
Sweating is a consistent but not universal sign.
   Eyes
Constriction of the pupil, tearing, and blurred vision are common. Prolonged dialation of the pupils may occur in severe poisonings. Opsoclonus has occurred rarely. Excessive salivation commonly occurs.

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
CYS