ChemicalBook >>Isophthalic acid>>1,3-Benzenedicarboxylic acid(121-91-5)

1,3-Benzenedicarboxylic acid(121-91-5)

1,3-Benzenedicarboxylic acid(121-91-5)
Product IdentificationBack to Contents
【Product Name】

1,3-Benzenedicarboxylic acid
【Synonyms】

1,3-Benzenedicarboxylic acid
Benzene-1,3-dicarboxylic acid
Isophthalic acid
【CAS】

121-91-5
【Formula】

C8H6O4
【Molecular Weight】

166.13
【EINECS】

204-506-4
【RTECS】

NT2007000
【RTECS Class】

Primary Irritant
【Merck】

13,5216
【Beilstein/Gmelin】

1909332
【Beilstein Reference】

4-09-00-03292
Physical and Chemical PropertiesBack to Contents
【Appearance】

White crystals or powder.
【Solubility in water】

1 g/L
【Melting Point】

345 - 348
【Boiling Point】

119 - 121 (6 torr)
【Vapor Pressure】

2E-7 (25 C)
【Density】

1.54 g/cm3 (20 C)
【pKa/pKb】

3.70 (pKa)
【Partition Coefficient】

1.66
【Heat Of Vaporization】

124.70 kJ/mol
【Heat Of Combustion】

-3203 kJ/mol
【Usage】

Chemical intermediate for diphenyl isophthalate.
【Saturation Concentration】

Very low at normal temperatures.
First Aid MeasuresBack to Contents
【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 not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
【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】

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 tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
【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.
Hazards IdentificationBack to Contents
【Inhalation】

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
【Skin】

May cause skin irritation. The toxicological properties of this material have not been fully investigated.
【Eyes】

May cause eye irritation. The toxicological properties of this material have not been fully investigated.
【Ingestion】

May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
【Hazards】

Dust forms explosive mixture in air.
【EC Risk Phrase】

R 36/37/38
【EC Safety Phrase】

S 26 36
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.
【Exposure Effects】

No data were available to assess the potential effects of exposure to this agent during pregnancy or lactation.
【Poison Class】

4
Fire Fighting MeasuresBack to Contents
【Flash Point】

329
【Autoignition】

700
【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. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
【Upper exp. limit】

7.7
【Lower exp. limit】

1.3
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.
Stability and ReactivityBack to Contents
【Disposal Code】

4
【Incompatibilities】

Oxidizing agents.
【Stability】

Stable under normal temperatures and pressures.
【Decomposition】

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

2917 39 80
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