n-Butyl phthalate

  • 1,2-Benzenedicarboxylic acid, dibutyl ester
  • Dibutyl phthalate
  • Phthalic acid, dibutyl ester
Formula
C6H4[COO(CH2)3CH3]2
Structure
Description
Colorless to faint yellow, oily, viscous liquid, odorless or slight aromatic, ester odor.
Uses
Insect repellent.

Registry Numbers and Inventories.
CAS
84-74-2
EC (EINECS/ELINCS)
201-557-4
EC Index Number
607-318-00-4
EC Class
Toxic for reproduction Category 2; Toxic for reproduction Category 3; Dangerous for the Environment
R 61 50 62
S 53 45 61
RTECS
TI0875000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Human Data
UN (DOT)
9095
Merck
13,1586
Beilstein/Gmelin
1914064
Beilstein Reference
4-09-00-03175
RCRA
U069
EPA OPP
28001
Swiss Giftliste 1
G-1512
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C16H22O4
Formula mass
278.35
Melting point, °C
-35
Boiling point, °C
340
Vapor pressure, mmHg
0.00012 (25 C)
Vapor density (air=1)
9.6
Saturation Concentration
0.013 - 0.18 ppm at 25 C (calculated)
Evaporization number
Extremely low
Odor Threshold Odor threshold 0.26 To 1.47 mg/m3
Critical temperature
500
Critical pressure
1.7
Density
1.0595 g/cm3 (2 C)
Solubility in water
10 mg/L
Viscosity
0.203 p at 20C
Surface tension
34 g/s2
Refractive index
1.5011 (20 C)
Partition coefficient, pKow
4.9
Heat of vaporization
74.9 kJ/mol
Heat of combustion
-8500 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
D2A
Handling
Wash thoroughly after handling. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Wash clothing before reuse.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation.
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Strong acids, strong bases, strong oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide, acrid smoke and fumes.

Fire.
Flash Point,°C
160
Autoignition, °C
390
Upper exp. limit, %
2.5
Lower exp. limit, %
0.5
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Containers may explode when heated. Combustible material when exposed to heat or flame. Extinguishing media: Water or foam may cause frothing. Cool containers with flooding quantities of water until well after fire is out. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
This material is combustible.
Hazards
Containers may explode when heated.
Combustion products
The thermal decomposition of dibutyl phthalate was carried out in a flow system @ 250-500 C. The major products were 1-butene, butanol and phthalic anhydride.
Health
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure limit(s)
TLV (as TWA): ppm; 5 mg/m3 (ACGIH 1992-1993) OSHA PEL: TWA 5 mg/m3 NIOSH REL: TWA 5 mg/m3 NIOSH IDLH: 4000 mg/m3
Poison_Class
4
Exposure effects
Effects may be delayed.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
Causes respiratory tract irritation. Inhalation of a mist of this material may cause respiratory tract irritation. Can produce delayed pulmonary edema.
   Skin
Causes skin irritation.
   Eyes
Contact produces irritation, tearing, and burning pain. May cause chemical conjunctivitis.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
9095
Response guide
Hazard class
9
Packing Group
III
 
USCG CHRIS Code
DPA
 
HS Code
2917 31 00
 
Std. Transport #
4962119
 
IMO Chemical Code
17
IMO Pollution Category
A
IMO Hazard code
P