Product Identification

Product Name

4-(Methoxycarbonyl)benzaldehyde

Synonyms

4-Carbomethoxybenzaldehyde
Benzoic acid, 4-formyl-, methyl ester
Methyl p-formylbenzoate
p-Carbomethoxybenzaldehyde

CAS

1571-08-0

Formula

C9H8O3

Molecular Weight

164.16

EINECS

216-385-5

Beilstein/Gmelin

775895

Beilstein Reference

4-10-00-02753

Physical and Chemical Properties

Appearance

White to off-white crystalline powder.

Solubility in water

Insoluble

Melting Point

56 - 59

Boiling Point

265

Vapor Pressure

0.009 (25 C(

Density

1.200 g/cm3 (20 C)

Partition Coefficient

2.05

Heat Of Vaporization

50.3 kJ/mol

Usage

Chemical intermediate (unisolated) for dimethyl terephthalate.

First Aid Measures

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

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Store in a cool, dry place. Keep container closed when not in use.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear chemical goggles. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.

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

The toxicological properties of this material have not been investigated.

Fire Fighting Measures

Flash Point

123

Autoignition

240

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. Extinguishing media: Use agent most appropriate to extinguish fire.

Fire Potential

This material is probably combustible.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment.

Stability and Reactivity

Disposal Code

3

Incompatibilities

Flammable and/or toxic gases are generated by the combination with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents Can react with air to give first peroxo acids, and ultimately carboxylic acids Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products.

Stability

Stable under normal temperatures and pressures.

Decomposition

Irritating and toxic fumes and gases.

Transport Information

HS Code

2918 30 00

Hazards Identification

EC Safety Phrase

S 22 24/25