Dioctyl phthalate

  • Di-n-octyl phthalate
  • Di-(2-ethylhexyl)phthalate
  • Di-sec-octyl phthalate
  • 1,2-Benzenedicarboxylic acid, bis(2-ethylhexyl)ester
Formula
C24H38O4
Structure
Description
Clear, oily, odorless liquid.
Uses
Used as a plasticizer in plastics & rubber materials.

Registry Numbers and Inventories.
CAS
117-84-0
EC (EINECS/ELINCS)
204-214-7
r 60 61
RTECS
TI1925000
RTECS class
Reproductive Effector; Primary Irritant
Beilstein/Gmelin
1915994
Beilstein Reference
4-09-00-03180
RCRA
U107
Swiss Giftliste 1
G-1692
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C24H38O4
Formula mass
390.62
Melting point, °C
-50
Boiling point, °C
230
Vapor pressure, mmHg
4E-7 (25 C)
Vapor density (air=1)
16
Critical temperature
611
Critical pressure
9.7
Density
0.984 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
39 MPa s (20 C)
Surface tension
32 g/s2 (20 C)
Refractive index
1.4861 (20 C)
Dipole moment
2.49 (20 C)
Dielectric constant
5.1 (25 C)
Partition coefficient, pKow
8.10
Heat of vaporization
67.0 kJ/mol
Heat of combustion
-13593 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Keep container closed when not in use. Protect from physical damage.
D2A
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Synth of phthalates require good ventilation in order to minimize contamination of air with phthalic anhydride or alcohols. There may be also some need for skin protection. Handling mineral acids used as catalysts requires ordinary precautions.
Respirators
A full facepiece particulate respirator (with NIOSH type P100 or R100 filters) may be worn for up to 50 times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. Please note that N series filters are not recommended for this material. For emergencies or instances where the exposure levels are not known, use a full-facepiece positive-pressure, air-supplied respirator.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Reacts with acids to liberate heat along with alcohols and acids Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Avoid contact with alkalis and nitrates.
Decomposition
Oxides of carbon, irritating and toxic fumes and gases.

Fire.
Flash Point,°C
210
Autoignition, °C
390
Lower exp. limit, %
0.3
Fire fighting
Wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated in the pressure demand or other positive pressure mode. Use water in flooding quantities as fog. Solid streams of water may spread fire. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use foam, dry chemical, or carbon dioxide.
Fire potential
Slight fire hazard.
Hazards
None
Combustion products
Oxides of carbon, irritating fumes.
Health
1
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
Central nervous system depression may occur with ingestion of large amounts. Material is a suspected teratogen.
   Ingestion
Ingestion causes nausea, abdominal cramps, diarrhea. CNS depression - lethargy, drowsiness, staggering and sleepiness - can result from absorbing large amounts.
   Inhalation
The low vapor pressure of this material essentially eliminates inhalation hazards unless the material is heated or misted. Inhalation of mists can cause nausea and is irritating to the respiratory tract.
   Skin
Slight skin irritation may occur from prolonged skin contact. Low levels may be absorbed through the skin.
   Eyes
Causes irritation, redness, and pain.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
   Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Transport.
USCG CHRIS Code
DOP
 
Std. Transport #
4962120
 
IMO Chemical Code
18
IMO Pollution Category
III