Isophthalic acid , 98% , 121-91-5
Synonym(s):
Benzene-1,3-dicarboxylic acid
CAS NO.：121-91-5
Empirical Formula: C8H6O4
Molecular Weight: 166.13
MDL number: MFCD00002516
EINECS: 204-506-4
| Pack Size | Price | Stock | Quantity |
| 100G | RMB23.20 | In Stock |
|
| 500G | RMB38.40 | In Stock |
|
| 2.5kg | RMB164.00 | In Stock |
|
| others | Enquire |
PRODUCT Properties
| Melting point: | 341-343 °C (lit.) |
| Boiling point: | 214.32°C (rough estimate) |
| Density | 1,54 g/cm3 |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.5100 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | 0.12g/l |
| form | Crystalline Powder |
| pka | 3.54(at 25℃) |
| color | White to off-white |
| PH | 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 |
| Dielectric constant | 1.4（Ambient） |
| Stability: | Stable. Incompatible with strong oxidizing agents, strong bases. |
| InChIKey | QQVIHTHCMHWDBS-UHFFFAOYSA-N |
| LogP | 1.66 at 25℃ |
| CAS DataBase Reference | 121-91-5(CAS DataBase Reference) |
| NIST Chemistry Reference | 1,3-Benzenedicarboxylic acid(121-91-5) |
| EPA Substance Registry System | Isophthalic acid (121-91-5) |
Description and Uses
Isophthalic acid is an organic compound with the formula C6H4(CO2H)2. This colourless solid is an isomer of phthalic acid and terephthalic acid. These aromatic dicarboxylic acids are used as precursors (in form of acyl chlorides) to commercially important polymers, e.g. the fire-resistant material Nomex. Mixed with terephthalic acid, iso phthalic acid is used in the production of resins for drink bottles. The high-performance polymer poly benzimidazole is produced from iso phthalic acid.
Purified Isophthalic Acid (PIA) is mainly used as intermediate for high performance UPR, resins for coatings, high solids paints, gel coats, modifier of PET for bottles. Product Data Sheet
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P305+P351+P338 |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 24/25-36-26 |
| WGK Germany | 2 |
| RTECS | NT2007000 |
| Autoignition Temperature | 1198 °F |
| TSCA | Yes |
| HS Code | 29173980 |
| Hazardous Substances Data | 121-91-5(Hazardous Substances Data) |
