Phosphonic acid, bis(2-ethylhexyl) ester

  • Bis(2-ethylhexyl) hydrogen phosphite
  • Bis(2-ethylhexyl) phosphite
  • Bis(2-ethylhexyl) phosphonate
  • Bis(2-ethylhexyl) phosphonic acid
  • Chelex-H-8
  • Di-2-ethylhexyl-hydrogen-phosphite
Formula
C16H35O3P
Structure
Description
Colorless liquid.
Uses
Corrosion inhibitor, antioxidant, additive for extreme pressure lubricants & adhesives, textile finishing agent, chemical intermediate for organic phosphorus compounds.

Registry Numbers and Inventories.
CAS
3658-48-8
EC (EINECS/ELINCS)
222-904-6
RTECS
SZ6840000
RTECS class
Primary Irritant
Beilstein/Gmelin
1711893
Beilstein Reference
4-01-00-01785
Swiss Giftliste 1
G-2162
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C16H35O3P
Formula mass
306.48
Boiling point, °C
140 (1 torr)
Density
0.9327 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.4416 (20 C)

Hazards and Protection.
Storage
Keep in a tightly closed container in a cool, dry location.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Respirators
NIOSH?MSHA approved respirator.
Small spills/leaks
Wear protective equipment and ventilate area. Cover with dry lime and soda ash. Pickup and keep in a closed ontainer. Wash site.
Stability
Stable.
Incompatibilities
Strong oxidizing agents.
Decomposition
Oxides of carbon, phosphorous oxides and phosphine.

Fire.
Flash Point,°C
>110
Fire fighting
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. Use agent most appropriate to extinguish fire.

Health.
Poison_Class
2
Exposure effects
May be harmful by inhalation, ingestion or skin absorption. Causes irritation.

First aid
 
   Ingestion
The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. Activated charcoal activated charcoal binds most toxic agents and can decrease their systemic absorption if administered soon after ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. Pesticides - remove contaminated clothing and jewelry. Wash the skin, including hair and nails, vigorously; do repeated soap washings. Discard contaminated clothing. Irritation - treat dermal irritation or burns with standard topical therapy
   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.

Transport.