4-nitro-1H-pyrazole-3-carboxylic acid
4-Nitro-3-pyrazolecarboxylic acid
CAS: 5334-40-7;1101173-93-6
Molecular Formula: C4H3N3O4
4-nitro-1H-pyrazole-3-carboxylic acid - Names and Identifiers
4-nitro-1H-pyrazole-3-carboxylic acid - Physico-chemical Properties
| Molecular Formula | C4H3N3O4 |
| Molar Mass | 157.08 |
| Density | 1.840±0.06 g/cm3(Predicted) |
| Melting Point | 195°C |
| Boling Point | 509.6±35.0 °C(Predicted) |
| Flash Point | 262°C |
| Vapor Presure | 3.3E-11mmHg at 25°C |
| Appearance | Crystallization |
| pKa | 1.41±0.35(Predicted) |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Refractive Index | 1.679 |
| MDL | MFCD00090899 |
4-nitro-1H-pyrazole-3-carboxylic acid - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S22 - Do not breathe dust. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S37/39 - Wear suitable gloves and eye/face protection S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| HS Code | 29339900 |
| Hazard Class | IRRITANT |
4-nitro-1H-pyrazole-3-carboxylic acid - Introduction
Acid (acid) is an organic compound. Its chemical formula is C5H3N3O4 and its molecular weight is 161.10g/mol.
Acid is a yellow crystal with strong toxicity. It is a weak acid and can be dissolved in water. It is stable at room temperature, but decomposition may occur at high temperature and pressure.
This compound is often used as a catalyst and intermediate in organic synthesis reactions. It can be used in the synthesis of pyrazole compounds, such as drugs and pesticides. In addition, it can also be used in the synthesis of certain fluorescent dyes and pigments.
The preparation method of azo acid is obtained by the reaction of pyrazole and nitric acid. Nitric acid and pyrazole are first reacted, and after a series of chemical steps, acid is obtained.
You need to pay attention to safety when using and handling acid. Due to their toxicity, personal protective equipment such as gloves, goggles and masks should be worn. Avoid contact with skin during operation and maintain good ventilation. Avoid contact with combustibles and oxidants during storage and handling to prevent fire or explosion. It is best to store the compound in a closed container, away from fire and high temperature.
Acid is a yellow crystal with strong toxicity. It is a weak acid and can be dissolved in water. It is stable at room temperature, but decomposition may occur at high temperature and pressure.
This compound is often used as a catalyst and intermediate in organic synthesis reactions. It can be used in the synthesis of pyrazole compounds, such as drugs and pesticides. In addition, it can also be used in the synthesis of certain fluorescent dyes and pigments.
The preparation method of azo acid is obtained by the reaction of pyrazole and nitric acid. Nitric acid and pyrazole are first reacted, and after a series of chemical steps, acid is obtained.
You need to pay attention to safety when using and handling acid. Due to their toxicity, personal protective equipment such as gloves, goggles and masks should be worn. Avoid contact with skin during operation and maintain good ventilation. Avoid contact with combustibles and oxidants during storage and handling to prevent fire or explosion. It is best to store the compound in a closed container, away from fire and high temperature.
Last Update：2024-04-09 21:32:41
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