Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity
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Diethyl hydrogen phosphonate(762-04-9)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity

Product Identification

Product Name
Diethyl hydrogen phosphonate
Synonyms
Diethyl acid phosphite
Diethyl phosphite
Diethyl phosphonate
Hydrogen diethyl phosphite
CAS
762-04-9
Formula
C4H11O3P
Molecular Weight
138.12
EINECS
212-091-6
RTECS
TG7875000
RTECS Class
Other
Beilstein/Gmelin
605759
Beilstein Reference
4-01-00-01329

Physical and Chemical Properties

Appearance
Clear, colorless liquid.
Solubility in water
Soluble
Boiling Point
50
Vapor Pressure
< 2
Density
1.093 g/cm3 (0 C)
Heat Of Vaporization
38.10 kJ/mol
Usage
Textile finishing agent, antioxidant, additive for adhesives & for extreme pressure lubricant, chemical intermediate for organic phosphorus compounds.
Refractive Index
1.4057 (18.4 C)

First Aid Measures

Ingestion
Do NOT induce vomiting. Allow the victim to rinse his mouth and then to drink 2-4 cupfuls of water, and seek medical advice.
Inhalation
Remove from exposure to fresh air immediately.
Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
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.

Handling and Storage

Storage
Store in a cool, dry place. Keep container closed when not in use.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Inhalation
Harmful by inhalation.
Skin
Irritating. Harmful on contact with the skin.
Hazards
During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.

Exposure Controls/Personal Protection

Personal Protection
Wear appropriate safety goggles, protective clothing and gloves.
Respirators
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
Exposure Effects
The toxological properties of this substance have not been fully investigated.
Poison Class
5

Fire Fighting Measures

Flash Point
90
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Accidental Release Measures

Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment.

Stability and Reactivity

Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents - moist air or water - strong bases - strong acids - acid chlorides.
Decomposition
Phosphine, carbon monoxide, oxides of phosphorus, irritating and toxic fumes and gases, carbon dioxide.
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