ChemicalBook >>o-Phthalaldehyde>>1,2-Phthalic dicarboxaldehyde(643-79-8)

1,2-Phthalic dicarboxaldehyde(643-79-8)

1,2-Phthalic dicarboxaldehyde(643-79-8)
Product IdentificationBack to Contents
【Product Name】

1,2-Phthalic dicarboxaldehyde
【Synonyms】

(Z)-2-Methylbut-2-enedioic acid
1,2-Benzenedicarboxaldehyde
2-Butenedioic acid, 2-methyl-
2-Formylbenzaldehyde
Benzene-1,2-dicarbaldehyde
Methylmaleic acid
Phthalic aldehyde
【CAS】

498-23-7
【CAS】

643-79-8
【Formula】

C5H6O4
【Formula】

C8H6O2
【Molecular Weight】

130.1
【Molecular Weight】

134.13999999999999
【EINECS】

207-858-7
【EINECS】

211-402-2
【RTECS】

GE6650000
【RTECS】

TH6950000
【RTECS Class】

Other
【Merck】

13,2345
【Beilstein/Gmelin】

1722679
【Beilstein/Gmelin】

878317
【Beilstein Reference】

4-02-00-02230
【Beilstein Reference】

4-07-00-02138
【EC Class】

toxic, corrosive, sensitizing
Physical and Chemical PropertiesBack to Contents
【Appearance】

Hygroscopic, off-white powder.
【Appearance】

Yellow solid.
【Solubility in water】

Soluble
【Solubility in water】

Very soluble
【Melting Point】

98 - 99
【Melting Point】

54 - 56
【Boiling Point】

336
【Boiling Point】

266
【Vapor Pressure】

2E-5 (25 C)
【Vapor Pressure】

0.009 (25 C)
【Density】

1.13 g/cm3 (20 C)
【Density】

1.617 g/cm3
【pKa/pKb】

3.44 (pKa)
【Partition Coefficient】

.51
【Partition Coefficient】

.54
【Heat Of Vaporization】

50.4 kJ/mol
【Heat Of Vaporization】

63.7 kJ/mol
【Heat Of Combustion】

-2008 kJ/mol
【Usage】

A reagent in the analysis of amino acids.
First Aid MeasuresBack to Contents
【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】

Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
【Inhalation】

May cause respiratory tract irritation.
【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】

May cause skin irritation.
【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.
【Skin】

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
【Eyes】

May cause eye irritation.
【Eyes】

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

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Handling and StorageBack to Contents
【Storage】

Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
【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. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
【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 IdentificationBack to Contents
【Ingestion】

May cause irritation of the digestive tract. May be harmful if swallowed.
【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
【Inhalation】

May cause severe irritation of the upper respiratory tract with pain, burns, and inflammation.
【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 22
【EC Risk Phrase】

R 36/37/38
【EC Safety Phrase】

S 22 36/37
【EC Safety Phrase】

S 26 36
【UN (DOT)】

2928
Exposure Controls/Personal ProtectionBack to Contents
【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】

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Fire Fighting MeasuresBack to Contents
【Flash Point】

172
【Flash Point】

99
【Autoignition】

480
【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: For small fires, use water spray, dry chemical, carbon dioxide or chemical foam.
【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. Runoff from fire control or dilution water may cause pollution. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
【Upper exp. limit】

14.6
【Lower exp. limit】

2.1
Accidental Release MeasuresBack to Contents
【Small spills/leaks】

Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
【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. Provide ventilation.
Stability and ReactivityBack to Contents
【Disposal Code】

3
【Incompatibilities】

Oxidizing agents, reducing agents, bases, moisture.
【Stability】

Stable under normal temperatures and pressures.
【Incompatibilities】

Strong oxidizing agents; strong bases.
【Decomposition】

Carbon monoxide, carbon dioxide.
【Decomposition】

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Transport InformationBack to Contents
【UN Number】

2928
【HS Code】

2912 29 00
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