4-Nitrophthalic anhydride
4-Nitrophthalic anhydride
CAS: 5466-84-2
Molecular Formula: C8H3NO5
4-Nitrophthalic anhydride - Names and Identifiers
| Name | 4-Nitrophthalic anhydride |
| Synonyms | TIMTEC-BB SBB008431 4-NITROPHTHALIC ANHYDRIDE 4-Nitrophthalic anhydride 4-nitrophthalicacidanhydride 4-Nitrophthalic acid anhydride 5-nitro-2-benzofuran-1,3-dione 4-nitro-2-benzofuran-1,3-dione 5-NITRO-ISOBENZOFURAN-1,3-DIONE 1,3-Isobenzofurandione, 5-nitro- 4-nitro-1,2-benzenedicarboxylic acid anhydride 4-Nitro Phthalic Anhydride p-Nitro Phthalic Anhydride ethyl {[(3,4-dichlorophenyl)carbamoyl]oxy}methylcarbamate |
| CAS | 5466-84-2 |
| EINECS | 226-776-2 |
| InChI | InChI=1/C11H12Cl2N2O4/c1-3-18-11(17)15(2)19-10(16)14-7-4-5-8(12)9(13)6-7/h4-6H,3H2,1-2H3,(H,14,16) |
4-Nitrophthalic anhydride - Physico-chemical Properties
| Molecular Formula | C8H3NO5 |
| Molar Mass | 193.11 |
| Density | 1.6392 (rough estimate) |
| Melting Point | 116-120°C(lit.) |
| Boling Point | 197 °C / 8mmHg |
| Water Solubility | Hydrolysis |
| Solubility | Acetone (Slightly), Chloroform (Slightly), Methanol (Slightly) |
| Appearance | Crystallization |
| Color | Pale Beige |
| BRN | 179682 |
| Storage Condition | Inert atmosphere,Room Temperature |
| Sensitive | Moisture Sensitive |
| Refractive Index | 1.4700 (estimate) |
| MDL | MFCD00005922 |
| Physical and Chemical Properties | Colorless or gray-yellow needle-like crystals. Melting Point 119 °c. Soluble in hot alcohol, hot acetic acid and acetone, insoluble in water. |
4-Nitrophthalic anhydride - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R20/22 - Harmful by inhalation and if swallowed. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S22 - Do not breathe dust. |
| WGK Germany | 3 |
| RTECS | TI3328000 |
| FLUKA BRAND F CODES | 10-21 |
| TSCA | Yes |
| HS Code | 29173990 |
4-Nitrophthalic anhydride - Upstream Downstream Industry
| Downstream Products | 4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic anhydride) |
4-Nitrophthalic anhydride - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Uses | 4-nitrophthalic anhydride is used to prepare phthalic acid and compounds with anticonvulsant activity. Used as an intermediate of the fluorescent dye fluorescein isothiocyanate, and also used for the determination of alcohols. |
| Production method | 4-nitrophthalic acid (610-27-5) is generated by hydrolysis of 4-nitrophthalimide, and then obtained by dehydration. 4-nitrobenzenediimide was added to sodium hydroxide solution and heated to boil for 15min. Adjust the pH6-8 with nitric acid and boil with nitric acid for 5min. Cooling, filtering, the filtrate is extracted with ether, and the extract is dried and evaporated to remove the ether, that is, 4-nitrobenzene diformic anhydride crystals are precipitated. 95% yield. |
Last Update：2024-04-10 22:29:15
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