Product Identification
【Product Name】4-(Methoxycarbonyl)benzaldehyde
【Synonyms】p-Carbomethoxybenzaldehyde 对甲酰基苯甲酸甲酯
【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℃)
【Density】1.200 g/cm3 (20 ℃)
【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 ggles. 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 virous 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