Isophthalic acid CAS 121-91-5
——————
CAS number ： 121-91-5
molecular formula : C8H6O4
EINECS ： 204-506-4
——————
Email ： info@deshangchem.com
Mobile : +86-13153039501
TEL ： +86-531-88752665
CAS number:121-91-5
molecular formula：C8H6O4
molecular weight：166.13
EINECS number：204-506-4
English synonyms
RARECHEM AL BO 0036;M-PHTHALIC ACID;1,3-dicarboxybenzene;1,3-phthalicacid;m-benzenedicarboxylicacid;m-Dicarboxybenzene;1,3-BENZENEDICARBOXYLIC ACID;1,3-PHENYL DICARBOXYLIC ACID
Related categories
Benzene ring series;Organic acid;Organic building block;General reagent;Carboxylic acid;Organic base;Biochemical reagent;Organic chemical raw material;Carboxylic acid and derivatives;Organic chemical industry;Organic chemical raw material;Polyurethane resin raw material;Aromatic hydrocarbon;Organic raw material;Inorganic Acids;Impurity reference substance;Organic carboxylic acid and its derivatives;Acid;Chemical raw materials;Daily chemicals;Chemical intermediates;General biochemical reagents-organic acid;Organic chemical industry;Pure isophthalic acid;BuildingBChemicalbooklocks;C8;CarbonylCompounds; CarboxylicAcids;ChemicalSynthesis;OrganicBuildingBlocks;solventsandintermediates;organic intermediates;intermediates-organic intermediates;chemicals;organic chemical products;chemical reagents;acids;elements
Introduction
Isophthalic acid (IPA for short), also known as 1,3-phthalic acid or isophthalic acid, has strong heat resistance, hydrolysis resistance and chemical resistance, and can undergo salt formation, dehydration, hydrogenation, halogenation, etc. The largest use of the reaction is as an intermediate Chemicalbook for the production of unsaturated polyester resins, followed by the manufacture of polyester resins, alkyd resins (mainly used for paint manufacturing) and printing inks. In addition, it can also be used to strengthen plastics and packaging, to manufacture film couplers, coatings and polyester fiber dyeing modifiers, as well as medicines, etc., and has broad prospects for development and utilization.
Chemical properties
| melting point | 341-343 °C (lit.) |
| boiling point | 214.32°C (rough estimate) |
| density | 1,54 g/cm3 |
| refractive index | 1.5100 (estimate) |
| Storage conditions | Sealed in dry,Room Temperature |
| Solubility | 0.12g/l |
| shape | Crystalline Powder |
| Acidity coefficient(pKa) | 3.54(at 25℃) |
| color | White to off-white |
| pH value | 3.33(1 mM solution);2.76(10 mM solution);2.24(100 mM solution) |
| water solubility | 0.01 g/100 mL (25 ºC) |
| Merck | 14,5197 |
| BRN | 1909332 |
| stability | Stable. Incompatible with strong oxidizing agents, strong bases. |
| InChIKey | QQVIHTHCMHWDBS-UHFFFAOYSA-N |
| CAS database | 121-91-5(CAS DataBase Reference) |
Crystallized from water or ethanol, it is colorless crystal. Slightly soluble in water, insoluble in benzene, toluene and petroleum ether, soluble in methanol, ethanol, acetone and glacial acetic acid.
Use
● It is used in the production of alkyd resins, unsaturated polyester resins and other polymers and plasticizers.
● Used as chromatographic analysis reagent, also used in organic synthesis
Production method
In industry, meta-xylene is used as raw material, cobalt acetate is used as catalyst, acetaldehyde is used as promoter, and acetic acid is used as solvent, and isophthalic acid is obtained by liquid-phase oxidation at a low temperature of 120 °C under a pressure of about 0.6 MPa. Raw material consumption quota: m-xylene (≥95%) 900kg/t, Chemicalbook acetaldehyde (≥96%) 600kg/t, acetic acid (≥96%) 500kg/t, cobalt acetate (≥98%) 25kg/t. In addition, the hydrolysis of isophthalonitrile, or the oxidation of meta-xylene with potassium permanganate is also an industrially adopted method for the production of isophthalic acid.
Isophthalic acid CAS 121-91-5
CAS number:121-91-5
molecular formula：C8H6O4
molecular weight：166.13
EINECS number：204-506-4
English synonyms
RARECHEM AL BO 0036;M-PHTHALIC ACID;1,3-dicarboxybenzene;1,3-phthalicacid;m-benzenedicarboxylicacid;m-Dicarboxybenzene;1,3-BENZENEDICARBOXYLIC ACID;1,3-PHENYL DICARBOXYLIC ACID
Related categories
Benzene ring series;Organic acid;Organic building block;General reagent;Carboxylic acid;Organic base;Biochemical reagent;Organic chemical raw material;Carboxylic acid and derivatives;Organic chemical industry;Organic chemical raw material;Polyurethane resin raw material;Aromatic hydrocarbon;Organic raw material;Inorganic Acids;Impurity reference substance;Organic carboxylic acid and its derivatives;Acid;Chemical raw materials;Daily chemicals;Chemical intermediates;General biochemical reagents-organic acid;Organic chemical industry;Pure isophthalic acid;BuildingBChemicalbooklocks;C8;CarbonylCompounds; CarboxylicAcids;ChemicalSynthesis;OrganicBuildingBlocks;solventsandintermediates;organic intermediates;intermediates-organic intermediates;chemicals;organic chemical products;chemical reagents;acids;elements
Introduction
Isophthalic acid (IPA for short), also known as 1,3-phthalic acid or isophthalic acid, has strong heat resistance, hydrolysis resistance and chemical resistance, and can undergo salt formation, dehydration, hydrogenation, halogenation, etc. The largest use of the reaction is as an intermediate Chemicalbook for the production of unsaturated polyester resins, followed by the manufacture of polyester resins, alkyd resins (mainly used for paint manufacturing) and printing inks. In addition, it can also be used to strengthen plastics and packaging, to manufacture film couplers, coatings and polyester fiber dyeing modifiers, as well as medicines, etc., and has broad prospects for development and utilization.
Chemical properties
| melting point | 341-343 °C (lit.) |
| boiling point | 214.32°C (rough estimate) |
| density | 1,54 g/cm3 |
| refractive index | 1.5100 (estimate) |
| Storage conditions | Sealed in dry,Room Temperature |
| Solubility | 0.12g/l |
| shape | Crystalline Powder |
| Acidity coefficient(pKa) | 3.54(at 25℃) |
| color | White to off-white |
| pH value | 3.33(1 mM solution);2.76(10 mM solution);2.24(100 mM solution) |
| water solubility | 0.01 g/100 mL (25 ºC) |
| Merck | 14,5197 |
| BRN | 1909332 |
| stability | Stable. Incompatible with strong oxidizing agents, strong bases. |
| InChIKey | QQVIHTHCMHWDBS-UHFFFAOYSA-N |
| CAS database | 121-91-5(CAS DataBase Reference) |
Crystallized from water or ethanol, it is colorless crystal. Slightly soluble in water, insoluble in benzene, toluene and petroleum ether, soluble in methanol, ethanol, acetone and glacial acetic acid.
Use
● It is used in the production of alkyd resins, unsaturated polyester resins and other polymers and plasticizers.
● Used as chromatographic analysis reagent, also used in organic synthesis
Production method
In industry, meta-xylene is used as raw material, cobalt acetate is used as catalyst, acetaldehyde is used as promoter, and acetic acid is used as solvent, and isophthalic acid is obtained by liquid-phase oxidation at a low temperature of 120 °C under a pressure of about 0.6 MPa. Raw material consumption quota: m-xylene (≥95%) 900kg/t, Chemicalbook acetaldehyde (≥96%) 600kg/t, acetic acid (≥96%) 500kg/t, cobalt acetate (≥98%) 25kg/t. In addition, the hydrolysis of isophthalonitrile, or the oxidation of meta-xylene with potassium permanganate is also an industrially adopted method for the production of isophthalic acid.
Team Presentation
Firm：Shandong Deshang Chemical Co., LTD
Phone
：+86-13153039501
Email
：info@deshangchem.com
Add：11th Floor, Chuangbo Industrial Park, 177 Tianchen Road, High-tech Zone, Jinan City, Shandong Province, China
Linke：