Methyl 4-formylbenzoate

  • Benzoic acid, 4-formyl-, methyl ester
Formula
4-(OHC)C6H4COOCH3
Structure
Description
White to off-white crystalline powder.
Uses
Chemical intermediate (unisolated) for dimethyl terephthalate.

Registry Numbers and Inventories.
CAS
1571-08-0
EC (EINECS/ELINCS)
216-385-5
S 22 24/25
Beilstein/Gmelin
775895
Beilstein Reference
4-10-00-02753
Canada DSL/NDSL
DSL
US TSCA
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C9H8O3
Formula mass
164.16
Melting point, °C
56 - 59
Boiling point, °C
265
Vapor pressure, mmHg
0.009 (25 C(
Density
1.200 g/cm3 (20 C)
Solubility in water
Insoluble
Partition coefficient, pKow
2.05
Heat of vaporization
50.3 kJ/mol

Hazards and Protection.
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.
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.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
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.
Decomposition
Irritating and toxic fumes and gases.

Fire.
Flash Point,°C
123
Autoignition, °C
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.

Health.
Exposure effects
The toxicological properties of this material have not been investigated.

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

Transport.
HS Code
2918 30 00