Benzene phosphorus thiodichloride

  • Phenyl phosphorus thiodichloride
  • Dichloro(phenyl)phosphine sulfide
Formula
C6H5Cl2PS
Structure
Description
Colorless liquid with unpleasant acrid pungent odor.

Registry Numbers and Inventories.
CAS
3497-00-5
EC (EINECS/ELINCS)
222-494-9
RTECS
TB2200000
UN (DOT)
2799
Beilstein/Gmelin
971247
Beilstein Reference
4-16-00-01090
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H5Cl2PS
Formula mass
211.05
Melting point, °C
-24.0
Boiling point, °C
271
Vapor pressure, mmHg
0.011 (25 C)
Density
1.4042 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
2.78 cp (20 C)
Refractive index
1.6267 (20 C)
Partition coefficient, pKow
2.61
Heat of vaporization
48.9

Hazards and Protection.
Storage
Store in a cool, dry location, Keep containers tightly closed. Store only with compatible materials.
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
Respiratory protection (supplied-air respirator with full facepiece or self-contained breathing apparatus) should be available where these compounds are manufactured or used and should be worn in case of emergency and overexposure.
Small spills/leaks
Fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Use water spray to reduce vapors; do not put water directly on leak, spill area or inside container. Keep combustibles (wood, paper, oil, etc.) away from spilled material. SMALL SPILLS: Cover with DRY earth, DRY sand, or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. Use clean non-sparking tools to collect material and place it into loosley covered plastic containers for later disposal. Prevent entry into waterways, sewers, basements or confined areas.
Stability
Decomposed by moisture.
Incompatibilities
Incompatible with strong oxidizing agents, alcohols, amines, alkali May react vigorously or explosively
Decomposition
Produces toxic and corrosive fumes.

Fire.
Flash Point,°C
118
Autoignition, °C
170
Fire fighting
When material is not involved in fire: do not use water on material itself. SMALL FIRES: Dry chemical or carbon dioxide. Move containers from fire area if you can do it without risk. LARGE FIRES: Flood fire area with large quantities of water, while knocking down vapors with water fog. If insufficient water supply: knock down vapors only. FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Cool containers with flooding quantities of water until well after fire is out. Do not get water inside containers. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire.
Fire potential
May burn but does not ignite readily.
Hazards
May ignite combustibles (wood, paper, oil, clothing, etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases. Flammable/toxic gases may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.)Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water. Substance may be transported in a molten form.
Combustion products
Toxic fumes include oxides of phosphorus and sulfur and hydrogen chloride.

Health.
Exposure effects
Reduced body temperature or elevated body temperature may occur. Low heart rate and abnormally low blood pressure may develop after moderate to severe poisoning. Rapid heart rate, elevated blood pressure, and changes in respiratory rate may also occur. Early giddiness, anxiety headache, and restlessness followed by ataxia, drowsiness, and confusion are common with moderate to severe exposures. Sporadic reports of human birth defects related to organophosphates have not been fully verified.
   Ingestion
Nausea, vomiting, abdominal cramps, and diarrhea are common muscarinic effects. Both painless and frank clinical pancreatitis have been reported.
   Inhalation
Increased bronchial secretions, bronchospasm and dyspnea occur in moderate to severe exposures. Respiratory failure and non-cardiogenic pulmonary edema may occur with severe poisonings. Acute respiratory insufficiency is the main cause of death in acute poisonings. The hydrocarbon vehicle may cause chemical pneumonitis.
   Skin
Profuse sweating is common. Pallor may be noted. Dermal sensitization has been reported.
   Eyes
Constriction of the pupil, tearing, and blurred vision are common. Prolonged dialation of the pupils may occur. Salivation commonly occurs.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Remove to fresh air.
   Skin
Flush with water; wash with soap and water.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility. Patients symptomatic following exposure should be observed in a controlled setting until all signs and symptoms have fully resolved. Treatment should include recommendations listed in the oral exposure section when appropriate.

Transport.
UN number
2799
Response guide
Hazard class
8
Packing Group
II
 
USCG CHRIS Code
BPT
 
Std. Transport #
4931720