Terephthalic acid Cas : 100-21-0
Specifications:Content≥99.8%
Packing:25kg or according to customer requirements.
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Product Description
| Name |
Terephthalic acid |
| Synonyms |
PTA Terephthalic a P-Phthelic Acid p-Phthalic acid 1,4-phthalicacid Terephthalic acid acideterephtalique Acide terephtalique Kyselina terftalova 1,4-dicarboxybenzene Kyselina tereftalova acideterephtalique(french) Benzene-p-dicarboxylic acid Benzene-1,4-dicarboxylic acid (1aR,1bS,4aR,7aS,7bS,8R,9R,9aS)-4a,7b,9,9a-tetrahydroxy-3-(hydroxymethyl)-1,1,6,8-tetramethyl-1,1a,1b,4,4a,7a,7b,8,9,9a-decahydro-5H-cyclopropa[3,4]benzo[1,2-e]azulen-5-one |
| CAS |
100-21-0 |
| EINECS | 202-830-0 |
| InChI | InChI=1/C8H6O4/c1-9-5-13-18(24,15(9)22)7-11(8-21)6-12-14-17(3,4)20(14,26)16(23)10(2)19(12,13)25/h5-6,10,12-14,16,21,23-26H,7-8H2,1-4H3/t10-,12+,13-,14-,16-,18-,19-,20-/m1/s1 |
100-21-0 - Physico-chemical Properties
| Molecular Formula |
C8H6O4 |
| Molar Mass | 166.13 |
| Density | 1.58 g/cm3 at 25 °C |
| Melting Point | >300 °C (lit.) |
| Boling Point | 214.32°C (rough estimate) |
| Flash Point | 260°C |
| Water Solubility | slightly soluble in water (0,017 g/L at 25°C) |
| Solubility | Slightly soluble in hot ethanol, soluble in alkali, almost insoluble in water, chloroform, ether and acetic acid. |
| Vapor Presure | <0.01 mm Hg ( 20 °C) |
| Appearance | White powder |
| Color | White |
| Exposure Limit | ACGIH: TWA 10 mg/m3 |
| Merck | 14,9162 |
| BRN | 1909333 |
| pKa | 3.51(at 25℃) |
| PH | 3.36(1 mM solution);2.79(10 mM solution);2.26(100 mM solution) |
| Storage Condition | Sealed in dry,Room Temperature |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| Refractive Index | 1.5100 (estimate) |
| MDL | MFCD00002558 |
| Physical and Chemical Properties |
Character White needle-like crystal or powder. The relative density of 1.510g/cm3 soluble in alkali solution, soluble in hot ethanol, insoluble in water, ether, acetic acid and chloroform. |
| Use | It is an important raw material for the manufacture of polyester resin, film, fiber, insulating paint and engineering plastics |
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