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Triethyl phosphite 122-52-1 MSDS
Name: Triethyl Phosphite 98% Material Safety Data Sheet
Synonym: Phosphorous Acid, Triethyl Ester; Triethoxyphosphine
CAS: 122-52-1
Section 1 - Chemical Product   MSDS Name:Triethyl Phosphite 98% Material Safety Data Sheet
Synonym:Phosphorous Acid, Triethyl Ester; Triethoxyphosphine

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
122-52-1 Triethyl Phosphite 98% 204-552-5
Hazard Symbols: XN
Risk Phrases: 10 22

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Flammable. Harmful if swallowed.Stench.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
Inhalation:
May cause respiratory tract irritation.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
  Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
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.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
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. Flammable Liquid. Can release vapors that form explosive mixtures at temperatures above the flashpoint. Use water spray to keep fire-exposed containers cool. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water.
Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. May polymerize explosively when involved in a fire. Containers may explode if exposed to fire.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog or alcohol-resistant foam. Do NOT use straight streams of water. Cool containers with flooding quantities of water until well after fire is out.

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. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
Flammables-area.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Use adequate ventilation to keep airborne concentrations low. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 122-52-1: 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 prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Liquid
Color: clear, colorless
Odor: obnoxious odor, stench
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 156 deg C
Freezing/Melting Point: -112 deg C
Autoignition Temperature: 250 deg C ( 482.00 deg F)
Flash Point: 54 deg C ( 129.20 deg F)
Explosion Limits, lower: 3.75
Explosion Limits, upper: 42.5
Decomposition Temperature: 260 deg C
Solubility in water: Insoluble.
Specific Gravity/Density: 0.969
Molecular Formula: C6H15O3P
Molecular Weight: 166.077

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable at room temperature in closed containers under normal storage and handling conditions.
Conditions to Avoid:
Incompatible materials, ignition sources, moisture, exposure to air, excess heat, strong oxidants.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong bases, may decompose on exposure to moist air or water.
Hazardous Decomposition Products:
Carbon monoxide, oxides of phosphorus, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: May occur.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 122-52-1: TH1130000 LD50/LC50:
CAS# 122-52-1: Draize test, rabbit, eye: 100 mg Moderate; Draize test, rabbit, skin: 500 mg Mild; Inhalation, mouse: LC50 = 6203 mg/m3/6H; Inhalation, rat: LC50 = 11063 mg/m3/6H; Oral, mouse: LD50 = 3720 mg/kg; Oral, rat: LD50 = 1840 mg/kg; Skin, rabbit: LD50 = 2800 mg/kg.
Carcinogenicity:
Triethyl Phosphite - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
 

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

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: TRIETHYL PHOSPHITE
Hazard Class: 3
UN Number: 2323
Packing Group: III
IMO
Shipping Name: TRIETHYL PHOSPHITE
Hazard Class: 3.3
UN Number: 2323
Packing Group: III
RID/ADR
Shipping Name: TRIETHYL PHOSPHITE
Hazard Class: 3
UN Number: 2323
Packing group: III

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 10 Flammable.
R 22 Harmful if swallowed.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
S 23 Do not inhale gas/fumes/vapour/spray.
S 25 Avoid contact with eyes.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 37/39 Wear suitable gloves and eye/face
protection.
WGK (Water Danger/Protection)
CAS# 122-52-1: 1
Canada
CAS# 122-52-1 is listed on Canada's DSL List.
CAS# 122-52-1 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 122-52-1 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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