| Customization: | Available |
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| CAS No.: | 121-91-5 |
| Formula: | C8h6o4 |
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Product Name
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Isophthalic acid |
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Category
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Plant Extracts
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Analysis
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HPLC
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Storage
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Keep in cool and dry place, well-closed, away from moisture or direct sunlight.
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Isophthalic acid (IPA), also known as 1, 3-benzoic acid or iso-phthalic acid, has strong heat resistance and hydrolysis resistance and chemical resistance, can occur salt dehydration hydrogenation halogenation and other reactions, the largest use is used as an unsaturated polyester resin production intermediate, followed by the manufacture of polyester resin alkyd resin (the main use of paint manufacturing) and printing ink In addition, it can also be used in reinforcing plastics and packaging, making film coloring agent, coating and dyeing modifier of polyester fiber, medicine and so on.
| Item | Top grades | First grade | |
| Appearance | White powder | White powder | |
| Acid value /(mgKOH/g) | 675±2 | 675±2 | |
| P-Carboxybenzaldehyde/(mg/Kg) | ≤25 | ≤25 | |
| p-methylbenzaldehyde /(mg/Kg) | ≤150 | ≤180 | |
| Ignition residue/(mg/Kg) | ≤6 | ≤10 | |
| Total heavy metal (Mo,Cr, Ni, Co, Mn,Fe )/(mg/Kg) | ≤3 | ≤5 | |
| Fe/(mg/Kg) | ≤1 | ≤2 | |
| moisture W/% | ≤0.2 | ≤0.2 | |
| DMF tinct(5g/100ml)/Hazen unit | ≤10 | ≤10 | |
| (Platinum cobalt color number) | |||
| b*value | ≤1.4 | ≤1.5 | |
| Particle size distribution | 250μm W/% | 7.9 | 7.9 |
| 45μm W/% | 10.2 | 10.2 | |
| average grain diameter/μm(sieve method) | 128 | 128 | |
PTA is one of the important bulk organic raw materials, widely used in chemical fiber, light industry, electronics, construction and other aspects of the national economy. At the same time, the application of PTA is more concentrated. More than 90% of PTA in the world is used to produce polyethylene terephthalate (PET). It needs 0.85-0.86 tons of PTA and 0.33-0.34 tons of MEG to produce 1 ton of pet. Polyester includes fiber chip, polyester fiber, bottle chip and film chip. In the domestic market, 75% of PTA is used in the production of polyester fiber; 20% is used in the production of bottle grade polyester, mainly used in the packaging of various drinks, especially carbonated drinks; 5% is used in film grade polyester, mainly used in packaging materials, films and tapes. It can be seen that the downstream extension product of PTA is mainly polyester fiber.
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