1-(4,8-Disulfonaphthalen-2-yl)-3-methyl-1H-pyrazol-5(4H)-one - Names and Identifiers
1-(4,8-Disulfonaphthalen-2-yl)-3-methyl-1H-pyrazol-5(4H)-one - Physico-chemical Properties
| Molecular Formula | C14H12N2O7S2
|
| Molar Mass | 384.38 |
| Density | 1.75±0.1 g/cm3(Predicted) |
| pKa | -0.48±0.40(Predicted) |
| Physical and Chemical Properties | EPA Chemical Information 1,5-Naphthalenedisulfonic acid, 3-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)- (6838-01-3) |
1-(4,8-Disulfonaphthalen-2-yl)-3-methyl-1H-pyrazol-5(4H)-one - Upstream Downstream Industry
1-(4,8-Disulfonaphthalen-2-yl)-3-methyl-1H-pyrazol-5(4H)-one - Introduction
3-((5h)-yl naphthalene-1,5-disulfonic acid (3-(5h)-yl)naphthalene-1,5-disulfonic acid) is an organic compound, also known as NPSA.
Nature:
NPSHA is a yellow crystalline powder with high water solubility. It is an acidic compound that reacts with bases to form salts.
Use:
NPSHA is usually used as a dye intermediate and can be used to prepare acid dyes. Due to its special chemical structure, it can give dyes strong light absorption properties and stability.
Method:
The synthesis method of NPSHA is more complicated, and it is usually synthesized by multi-step reaction. First, 1,5-naphthalenedisulfonic acid was synthesized, and then reacted with 4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-amine, further, a substitution reaction and a sulfonation reaction were carried out to finally obtain NPSHA.
Safety Information:
The safety of NPSHA has not been fully evaluated, so it is necessary to follow laboratory safety practices during use. Avoid contact with skin, eyes and mucous membranes to prevent inhalation or ingestion. Wear protective gloves, protective glasses and protective masks during operation to ensure a well-ventilated working environment. Keep away from ignition and oxidizing agents during storage and handling. In case of accidental contact, rinse immediately with plenty of water and seek medical treatment.
Last Update：2024-04-09 21:04:16