Product Identification

Product Name

1,2-Benzenedicarboxylic acid dibutyl ester

Synonyms

1,2-Benzenedicarboxylic acid, dibutyl ester
Dibutyl benzene-1,2-dicarboxylate
Dibutyl phthalate
Phthalic acid, dibutyl ester

CAS

84-74-2

Formula

C16H22O4

Molecular Weight

278.35000000000002

EINECS

201-557-4

RTECS

TI0875000

RTECS Class

Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Human Data

Merck

13,1586

Beilstein/Gmelin

1914064

Beilstein Reference

4-09-00-03175

EC Index Number

607-318-00-4

EC Class

Toxic for reproduction Category 2; Toxic for reproduction Category 3; Dangerous for the Environment

Physical and Chemical Properties

Appearance

Colorless to faint yellow, oily, viscous liquid, odorless or slight aromatic, ester odor.

Solubility in water

10 mg/L

Melting Point

-35

Boiling Point

340

Vapor Pressure

0.00012 (25 C)

Density

1.0595 g/cm3 (2 C)

Partition Coefficient

4.9

Heat Of Vaporization

74.9 kJ/mol

Heat Of Combustion

-8500 kJ/mol

Usage

Insect repellent.

Vapor Density

9.6

Saturation Concentration

0.013 - 0.18 ppm at 25 C (calculated)

Odor threshold

0.26 To 1.47 mg/m3

Refractive Index

1.5011 (20 C)

First Aid Measures

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.

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

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.

Hazards Identification

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.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea.

Hazards

Containers may explode when heated.

EC Risk Phrase

R 61 50 62

EC Safety Phrase

S 53 45 61

UN (DOT)

9095

Exposure Controls/Personal Protection

Personal 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.

Exposure Effects

Effects may be delayed.

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

Fire Fighting Measures

Flash Point

160

Autoignition

390

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.

Upper exp. limit

2.5

Lower exp. limit

.5

Fire Potential

This material is combustible.

Accidental Release Measures

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 and Reactivity

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.

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.

Transport Information

UN Number

9095

Hazard Class

9

Packing Group

III

HS Code

2917 31 00