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Chemical Datasheet

DI-(2-ETHYLHEXYL)PHOSPHORIC ACID

 8 - Corrosive

Chemical Identifiers

CAS Number UN/NA Number DOT Hazard Label USCG CHRIS Code
  • 298-07-7
  • 1902
  • Corrosive
  • DEP
NIOSH Pocket Guide International Chem Safety Card
none
  • BIS(2-ETHYLHEXYL)PHOSPHATE
NFPA 704
Diamond Hazard Value Description
1
2 0
Blue Health 2 Can cause temporary incapacitation or residual injury.
Red Flammability 1 Must be preheated before ignition can occur.
Yellow Instability 0 Normally stable, even under fire conditions.
White Special
(NFPA, 2010)
General Description
Odorless light yellow liquid. Floats on water. (USCG, 1999)

Hazards

Reactivity Alerts
none
Air & Water Reactions
No rapid reaction with air. No rapid reaction with water.
Fire Hazard
Special Hazards of Combustion Products: Irritating phosphorus oxides may be released. (USCG, 1999)
Health Hazard
Contact with liquid irritates eyes and may cause serious injury; consult an eye specialist. Also causes skin irritation on contact. Ingestion produces irritation similar to that caused by strong vinegar. (USCG, 1999)
Reactivity Profile
Organophosphates, such as DI-(2-ETHYLHEXYL)PHOSPHORIC ACID, are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides. Mildly corrosive to most metals; may form flammable hydrogen gas (USCG, 1999).
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

No information available.

Response Recommendations

Isolation and Evacuation
Excerpt from 153 Polymerizable warning [Substances - Toxic and/or Corrosive (Combustible)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)
Firefighting
Fire Extinguishing Agents Not to Be Used: Water or foam may cause frothing.

Fire Extinguishing Agents: Dry chemical, alcohol foam, carbon dioxide (USCG, 1999)
Non-Fire Response
Neutralizing Agents for Acids and Caustics: Sodium bicarbonate or lime solution (USCG, 1999)
Protective Clothing
Goggles or face shield; rubber gloves; protective clothing. (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
EYES: immediately flush with plenty of water for at least 15 min.; see a physician.

SKIN: immediately flush with plenty of water for at least 15 min.

INGESTION: induce vomiting and call a physician. (USCG, 1999)

Physical Properties

Chemical Formula:
  • C16H35O4P
Flash Point: 385°F (USCG, 1999)
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: less than -76°F (USCG, 1999)
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 0.977 at 68°F (USCG, 1999) - Less dense than water; will float
Boiling Point: data unavailable
Molecular Weight: 322.4 (USCG, 1999)
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

Chemical PAC-1 PAC-2 PAC-3
Bis(2-ethylhexyl) hydrogen phosphate (298-07-7) 15 mg/m3 160 mg/m3 980 mg/m3
(DOE, 2018)

Regulatory Information

EPA Consolidated List of Lists

No regulatory information available.

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

No regulatory information available.

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

Alternate Chemical Names