Product Identification
【Product Name】1,2-Phthalic dicarboxaldehyde
【CAS】643-79-8
【Formula】C8H6O2
【Molecular Weight】134.13999999999999
【EINECS】211-402-2
【RTECS】TH6950000
【RTECS Class】13,2345
【Beilstein/Gmelin】878317
【Beilstein Reference】4-07-00-02138
【EC Class】toxic, corrosive, sensitizing

Physical and Chemical Properties
【Appearance】Yellow solid.
【Solubility in water】Very soluble
【Melting Point】54 - 56
【Boiling Point】266
【Vapor Pressure】0.009 (25 C)
【Density】1.617 g/cm3
【pKa/pKb】3.44 (pKa)
【Partition Coefficient】.54
【Heat Of Vaporization】63.7 kJ/mol
【Heat Of Combustion】-2008 kJ/mol
【Usage】A reagent in the analysis of amino acids.

First Aid Measures
【Ingestion】If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
【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】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 immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
【Eyes】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. Store protected from moisture.
【Handling】Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Hazards Identification
【Ingestion】May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. Exposure (either ingestion or inhalation) of aldehyde compounds may cause central nervous system
【Skin】Contact with skin causes irritation and possible burns, especially if the skin is wet or moist.
【Eyes】May cause eye irritation and possible burns.
【Hazards】During a fire, irritating and highly toxic gasesmay be generated by thermal decomposition or combustion.
【EC Risk Phrase】R 36/37/38
【EC Safety Phrase】S 22 36/37
【UN (DOT)】2928