Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
Home > 1,2-Phthalic dicarboxaldehyde > 1,2-Phthalic dicarboxaldehyde(643-79-8)

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

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

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 Properties

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 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
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 Storage

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 Identification

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 Protection

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 Measures

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 Measures

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 Reactivity

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 Information

UN Number
2928
HS Code
2912 29 00
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