1141-38-4
naphthalene-2,6-dicarboxylic acid
CAS: 1141-38-4
Molecular Formula: C12H8O4
1141-38-4 - Names and Identifiers
| Name | naphthalene-2,6-dicarboxylic acid |
| Synonyms | 2,6-NAPHTHALIC ACID TIMTEC-BB SBB008377 naphthalene-2,6-dicarboxylate 2,6-Naphthalenedicarboxylic acid 2,6-NAPHTHALENEDICARBOXYLIC ACID naphthalene-2,6-dicarboxylic acid NAPHTHALENE-2,6-DICARBOXYLIC ACID |
| CAS | 1141-38-4 |
| EINECS | 214-527-0 |
| InChI | InChI=1/C12H8O4/c13-11(14)9-3-1-7-5-10(12(15)16)4-2-8(7)6-9/h1-6H,(H,13,14)(H,15,16)/p-2 |
1141-38-4 - Physico-chemical Properties
| Molecular Formula | C12H8O4 |
| Molar Mass | 216.19 |
| Density | 1.5 |
| Melting Point | >300 °C (lit.) |
| Boling Point | 316.6°C (rough estimate) |
| Flash Point | 232.4°C |
| Water Solubility | 3μg/L at 20℃ |
| Solubility | very faint turbidity in hot Pyridine |
| Vapor Presure | 2.03E-08mmHg at 25°C |
| Appearance | White powder |
| Color | white |
| BRN | 2051257 |
| pKa | 3.69±0.30(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.7080 (estimate) |
| Physical and Chemical Properties | White needle-like crystals. Melting point 310-313 °c (decomposition). Insoluble in benzene, toluene and acetic acid. |
1141-38-4 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| TSCA | T |
| HS Code | 29173990 |
| Hazard Class | IRRITANT |
1141-38-4 - Reference Information
| LogP | 2.22 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | this product is used to manufacture polyester fiber and f-grade insulating material with high strength and excellent dyeing performance. it is an important monomer of high performance PEN, PBN, liquid crystal polymer (LCP) and polyurethane resin, and is also an important raw material for medicine and fine chemicals. |
| Production method | One method is to synthesize NDA/NDC through Henkel reaction from the mono-or binary carboxylate of naphthalene; The other is to first synthesize 2,6-position substituted naphthalene that can be used for oxidation, and then oxidize to NDA, namely 2, 6-dialkylnaphthalene method and 2-alkyl-6-acylnaphthalene method. At present, the only industrialized (including semi-industrialized) production methods in the world are the o-xylene DMN method of BP Amoco in the United States, the 2-methyl-6-acetylnaphthalene method of MGC in Japan and the 2, 6-diisopropylnaphthalene oxidation method of Japan's Sumijin Chemical Company. |
Last Update：2024-04-09 02:00:06
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