Diphosgene 503-38-8 MSDS
Name: Diphosgene 99% Material Safety Data Sheet
Synonym: Trichloromethyl Chloroformate; Carbonochloridic Acid, Trichloromethyl Ester
CAS: 503-38-8
Section 1 - Chemical Product   MSDS Name:Diphosgene 99% Material Safety Data Sheet
Synonym:Trichloromethyl Chloroformate; Carbonochloridic Acid, Trichloromethyl Ester

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
503-38-8 Diphosgene 99 207-965-9
Hazard Symbols: T+ C
Risk Phrases: 26/27/28 34

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Very toxic by inhalation, in contact with skin and if swallowed.
Causes burns.Corrosive.Lachrymator (substance which increases the flow of tears).
Potential Health Effects
Eye:
Causes eye burns. Lachrymator (substance which increases the flow of tears).
Skin:
Causes skin burns. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Ingestion:
May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. Direct aspiration into the lungs may cause chemical pneumonitis, pulmonary edema, and hemorrhaging.
Inhalation:
Causes chemical burns to the respiratory tract. Inhalation may produce coughing, nausea, and pulmonary edema. In rare instances, exposure may cause sensitization, resulting in inflammation of the mucous membranes and in eczematous eruptions.
Chronic:
Repeated or prolonged exposure may cause allergic reactions in sensitive individuals.

Section 4 - FIRST AID MEASURES
  Eyes: Get medical aid immediately. Do NOT allow victim to rub eyes or keep eyes closed. Extensive irrigation with water is required (at least 30 minutes).
Skin:
Get medical aid immediately. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Do NOT use mouth-to-mouth resuscitation.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
Containers can build up pressure if exposed to heat and/or fire. As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. May ignite or explode on contact with steam or moist air.
Substance may react with water, and may release corrosive and/or toxic gases.
Extinguishing Media:
Use dry sand or earth to smother fire. Do NOT get water inside containers. For large fires, use water spray, fog or regular foam.
Contact professional fire-fighters immediately. Cool containers with flooding quantities of water until well after fire is out. For small fires, use dry chemical or carbon dioxide.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, observing precautions in the Protective Equipment section. Isolate area and deny entry. Provide ventilation. Do not expose spill to water. Do not get water inside containers. A vapor suppressing foam may be used to reduce vapors.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well-ventilated area. Do not allow water to get into the container because of violent reaction. Avoid contact with skin and eyes. Keep container tightly closed. Avoid ingestion and inhalation. Do not allow contact with water. Discard contaminated shoes. Keep from contact with moist air and steam.
Storage:
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. Corrosives area. Keep refrigerated. (Store below 4C/39F.) Vent periodically.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Use explosion-proof ventilation equipment. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 503-38-8: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to minimize contact with skin.
Respirators:
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Liquid
Color: clear, colorless
Odor: phosgene odor (resembling that of newly mown hay)
pH: Not available.
Vapor Pressure: 13.7 mbar @ 20
Viscosity: Not available.
Boiling Point: 128 deg C @ 760.00mmHg
Freezing/Melting Point: -57 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: N/A
Explosion Limits, upper: N/A
Decomposition Temperature:
Solubility in water: may decompose
Specific Gravity/Density: 1.6400g/cm3
Molecular Formula: C2Cl4O2
Molecular Weight: 197.83

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures. Combines vigorously or explosively with water.
Conditions to Avoid:
Incompatible materials, excess heat, exposure to moist air or water, oxidizers.
Incompatibilities with Other Materials:
Metals, strong oxidizing agents, ammonia, isopropyl alcohol.
Hazardous Decomposition Products:
Hydrogen chloride, phosgene, irritating and toxic fumes and gases, hydrogen gas, hydrogen gas.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 503-38-8: LQ7350000 LD50/LC50:
Not available.
Carcinogenicity:
Diphosgene - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
  Other No information available.

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: TOXIC LIQUID, CORROSIVE, ORGANIC, N.O.S.*
Hazard Class: 6.1 (8)
UN Number: 2927
Packing Group: I
IMO
Shipping Name: TOXIC LIQUID, CORROSIVE, ORGANIC, N.O.S.
Hazard Class: 6.1 (8)
UN Number: 2927
Packing Group: I
RID/ADR
Shipping Name: TOXIC LIQUID, CORROSIVE, ORGANIC, N.O.S.
Hazard Class: 6.1
UN Number: 2927
Packing group: I

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+ C
Risk Phrases:
R 26/27/28 Very toxic by inhalation, in contact with
skin and if swallowed.
R 34 Causes burns.
Safety Phrases:
S 36/39 Wear suitable protective clothing and
eye/face protection.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 503-38-8: No information available.
Canada
CAS# 503-38-8 is listed on Canada's NDSL List.
CAS# 503-38-8 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 503-38-8 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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