Section I.Chemical Product and Company Identification
Chemical Name Diphenyl Methylphosphonate
Portland OR
Methylphosphonic Acid Diphenyl Ester
Synonym
C13H13O3P
Chemical Formula
CAS Number 7526-26-3
Section II. Composition and Information on Ingredients
Chemical Name CAS Number Percent (%) TLV/PEL Toxicology Data
Diphenyl Methylphosphonate 7526-26-3 Min. Not available. Rat LD50 (oral) 233 mg/kg
98.0%(GC)
Section III. Hazards Identification
Acute Health Effects Toxic if ingested or inhaled. Avoid prolonged contact with this material. Overexposure may result in serious illness or
death.
Follow safe industrial hygiene practices and always wear proper protective equipment when handling this compound.
Chronic Health Effects CARCINOGENIC EFFECTS : Not available.
MUTAGENIC EFFECTS : Not available.
TERATOGENIC EFFECTS : Not available.
DEVELOPMENTAL TOXICITY: Not available.
Repeated exposure to an highly toxic material may produce general deterioration of health by an accumulation in one or
many human organs.
Section IV. First Aid Measures
Eye Contact Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 15
minutes. Get medical attention.
Skin Contact In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing
and shoes. Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention immediately.
Inhalation If the victim is not breathing, perform mouth-to-mouth resuscitation. Loosen tight clothing such as a collar, tie, belt or
waistband. If breathing is difficult, oxygen can be administered. Seek medical attention if respiration problems do not
improve.
INDUCE VOMITING by sticking finger in throat. Lower the head so that the vomit will not reenter the mouth and throat.
Ingestion
Loosen tight clothing such as a collar, tie, belt or waistband. If the victim is not breathing, perform mouth-to-mouth
resuscitation. Examine the lips and mouth to ascertain whether the tissues are damaged, a possible indication that the
toxic material was ingested; the absence of such signs, however, is not conclusive.
Section V. Fire and Explosion Data
Auto-Ignition Not available.
Flammability May be combustible at high temperature.
Flash Points Flammable Limits Not available.
110°C (230°F).
Combustion Products These products are toxic carbon oxides (CO, CO2), phosphates.
Fire Hazards
Not available.
Risks of explosion of the product in presence of mechanical impact: Not available.
Explosion Hazards
Risks of explosion of the product in presence of static discharge: Not available.
Fire Fighting Media
SMALL FIRE: Use DRY chemical powder.
LARGE FIRE: Use water spray, fog or foam. DO NOT use water jet.
and Instructions
Consult with local fire authorities before attempting large scale fire-fighting operations.
Continued on Next Page
Diphenyl Methylphosphonate
Section VI. Accidental Release Measures
Spill Cleanup Toxic Material.
Stop leak if without risk. If the product is in its solid form: Use a shovel to put the material into a convenient waste
Instructions
disposal container. If the product is in its liquid form: DO NOT get water inside container. Absorb with an inert material
and put the spilled material in an appropriate waste disposal. DO NOT touch spilled material. Use water spray to reduce
vapors. Prevent entry into sewers, basements or confined areas; dike if needed. Eliminate all sources of ignition.
Consult federal, state, and/or local authorities for assistance on disposal.
Section VII. Handling and Storage
Handling and Storage TOXIC. Keep locked up.. Keep away from heat. Mechanical exhaust required. When not in use, tightly seal the
container and store in a dry, cool place. Avoid excessive heat and light. DO NOT ingest. Do not breathe dust. Wear
Information
suitable protective clothing. If ingested, seek medical advice immediately and show the container or the label. Treat
symptomatically and supportively.
Always store away from incompatible compounds such as oxidizing agents, alkalis (bases).
Section VIII. Exposure Controls/Personal Protection
Engineering Controls Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below
recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to
airborne contaminants below the exposure limit.
Personal Protection Splash goggles. Lab coat. Dust respirator. Boots. Gloves. A MSHA/NIOSH approved respirator must be used to avoid
inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist BEFORE handling
this product.
Exposure Limits Not available.
Section IX. Physical and Chemical Properties
Solid. (White Crystals and Lumps.) Solubility
Physical state @ 20°C Not available.
1.21 (water=1)
Specific Gravity
Molecular Weight 248.21 Partition Coefficient Not available.
Boiling Point
Not available. Vapor Pressure Not applicable.
Melting Point 32.5 to 37.5°C (90.5 to 99.5°F) Vapor Density Not available.
Refractive Index Not available. Volatility Not available.
Critical Temperature Not available. Odor Not available.
Viscosity Not available. Taste Not available.
Section X. Stability and Reactivity Data
Stability
This material is stable if stored under proper conditions. (See Section VII for instructions)
Conditions of Instability Avoid excessive heat and light.
Incompatibilities
Reactive with strong oxidizing agents, strong alkalis (bases).
Section XI. Toxicological Information
RTECS Number SZ9127500
Eye Contact. Ingestion. Inhalation.
Routes of Exposure
Toxicity Data Rat LD50 (oral) 233 mg/kg
CARCINOGENIC EFFECTS : Not available.
Chronic Toxic Effects
MUTAGENIC EFFECTS : Not available.
TERATOGENIC EFFECTS : Not available.
DEVELOPMENTAL TOXICITY: Not available.
Repeated exposure to an highly toxic material may produce general deterioration of health by an accumulation in one or
many human organs.
Toxic if ingested or inhaled. Avoid prolonged contact with this material. Overexposure may result in serious illness or
Acute Toxic Effects
death.
Follow safe industrial hygiene practices and always wear proper protective equipment when handling this compound.
Continued on Next Page
Diphenyl Methylphosphonate
Section XII. Ecological Information
Ecotoxicity Not available.
Not available.
Environmental Fate
Section XIII. Disposal Considerations
Recycle to process, if possible. Consult your local regional authorities. You may be able to dissolve or mix material with a
Waste Disposal
combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber system. Observe all
federal, state and local regulations when disposing of the substance.
Section XIV. Transport Information
DOT Classification DOT Class 6.1: Toxic material.
PIN Number
Proper Shipping Name
Toxic solid, organic, n.o.s
Packing Group (PG) III
DOT Pictograms
Section XV. Other Regulatory Information and Pictograms
TSCA Chemical Inventory This compound is ON the EPA Toxic Substances Control Act (TSCA) inventory list.
(EPA)
WHMIS Classification CLASS D-1B: Material causing immediate and serious toxic effects (TOXIC).
On NDSL.
(Canada)
EINECS Number (EEC) 231-388-1
EEC Risk Statements
R23/24/25- Toxic by inhalation, in contact with skin and if swallowed.
SECTION 16 - ADDITIONAL INFORMATION
N/A
