Methylenebis(diethylphosphonate)

  • Methylenedi(phosphonic acid) tetraethyl ester
  • Tetraethyl methylenebisphosphonate
  • Tetraethyl methylenediphosphonate
  • Phosphonic acid, methylenedi-, tetraethyl ester
  • Phosphonic acid, methylenebis-, tetraethyl ester
Formula
C9H22O6P2
Structure
Description
Clear, colorless liquid.

Registry Numbers and Inventories.
CAS
1660-94-2
EC (EINECS/ELINCS)
216-764-5
R 22 36/38
RTECS
SZ9150000
RTECS class
Other
UN (DOT)
1824
Beilstein/Gmelin
1813241
Beilstein Reference
4-01-00-03071
Canada DSL/NDSL
NDSL
US TSCA
Listed

Properties.
Formula
C9H22O6P2
Formula mass
288.22
Boiling point, °C
151 - 153 (1.6 hPa)
Vapor density (air=1)
9.9
Density
1.167 g/cm3 (20 C)
Solubility in water
Slightly soluble
Viscosity
9.82 cp (30 C)
Refractive index
1.4312 (16.5 C)

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Wash clothing before reuse.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Remove all sources of ignition. Provide ventilation.
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, oxides of phosphorus, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
>110
Fire fighting
Extinguish using agent most appropriate for surrounding fire.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
   Ingestion
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated.
   Inhalation
Causes respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
   Skin
Causes skin irritation. The toxicological properties of this material have not been fully investigated.
   Eyes
Causes eye irritation. The toxicological properties of this material have not been fully investigated.

First aid
 
   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 immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
1824
Response guide
Hazard class
8
HS Code
2931 00 95