1-甲基吲哚啉-2,3-二酮
1-Methylisatin
CAS: 2058-74-4
Molecular Formula: C9H7NO2
1-甲基吲哚啉-2,3-二酮 - Names and Identifiers
| Name | 1-Methylisatin |
| Synonyms | OL-57 187287 N-Methylsatin 1-Methylisatin Methylisatintech N-Methylindol-2,3-dione N-Methylindoline-2,3-dione 1-Methylindoline-2,3-Dione 1-Methyl-2,3-indolinedione 1-methylindoline-2,3-dione 1-methyl-1H-indole-2,3-dione 1-methyl-2,3-dihydroindole-2,3-dione 1-Methyl-2,3-dihydro-1H-indole-2,3-dione 1-Methyl-1H-indole-2,3-dione, 1-Methylindolin-2,3-dione |
| CAS | 2058-74-4 |
| EINECS | 218-164-9 |
| InChI | InChI=1/C9H7NO2/c1-10-7-5-3-2-4-6(7)8(11)9(10)12/h2-5H,1H3 |
1-甲基吲哚啉-2,3-二酮 - Physico-chemical Properties
| Molecular Formula | C9H7NO2 |
| Molar Mass | 161.16 |
| Density | 1.314 |
| Melting Point | 130-133 °C (lit.) |
| Boling Point | 287.44°C (rough estimate) |
| Flash Point | 137.4°C |
| Water Solubility | Insoluble in water. |
| Vapor Presure | 0.00164mmHg at 25°C |
| Appearance | Orange to Brown Crystalline Powder |
| Color | Orange to brownish |
| Maximum wavelength(λmax) | ['427nm(CH2Cl2)(lit.)'] |
| BRN | 128280 |
| pKa | -2.41±0.20(Predicted) |
| Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
| Refractive Index | 1.5050 (estimate) |
| MDL | MFCD00005812 |
1-甲基吲哚啉-2,3-二酮 - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R25 - Toxic if swallowed R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S39 - Wear eye / face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2811 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | NL7939000 |
| HS Code | 29337900 |
| Hazard Class | IRRITANT |
1-甲基吲哚啉-2,3-二酮 - Introduction
1-methylliamin is an organic dye with the chemical name of n-methyl-4-(2-thiophenyl) aniline carbinol ammonium salt. It is a red crystalline powder, soluble in alcohol and ether, slightly soluble in water.
1-methylliamin is often used as a red food dye to add color to food products. It is also commonly used in textile dyeing and the preparation of pigments, inks, etc.
The preparation of 1-methylliamin is mainly obtained by reacting thioaniline and methanol. In the reaction conditions, some catalysts are usually added to improve the reaction efficiency.
The following safety information needs to be noted when using and preparing 1-methyllistatin:
-1-methylliamin has certain toxicity, contact with skin may cause allergy or irritation, should take protective measures, such as wearing gloves and eye protection device.
-Avoid contact with strong oxidants during operation and storage to avoid combustion or explosion accidents.
-Waste should be disposed of properly and not dumped into water or the environment.
-When using 1-methylliamin as a food dye, it should be used in accordance with the prescribed dosage and ensure compliance with food safety standards.
1-methylliamin is often used as a red food dye to add color to food products. It is also commonly used in textile dyeing and the preparation of pigments, inks, etc.
The preparation of 1-methylliamin is mainly obtained by reacting thioaniline and methanol. In the reaction conditions, some catalysts are usually added to improve the reaction efficiency.
The following safety information needs to be noted when using and preparing 1-methyllistatin:
-1-methylliamin has certain toxicity, contact with skin may cause allergy or irritation, should take protective measures, such as wearing gloves and eye protection device.
-Avoid contact with strong oxidants during operation and storage to avoid combustion or explosion accidents.
-Waste should be disposed of properly and not dumped into water or the environment.
-When using 1-methylliamin as a food dye, it should be used in accordance with the prescribed dosage and ensure compliance with food safety standards.
Last Update：2024-04-09 19:05:47
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