22346-43-6

Basic information

• Product Name: 4-hydroxy-7-methylamino-2-Naphthanlenesulfonicacid
• Synonyms: 4-hydroxy-7-(methylamino)-2-naphthalenesulfonicaci;4-hydroxy-7-methylamino-2-Naphthanlenesulfonicacid;4-hydroxy-7-N-methylamino-2-N-Aphthalenesulfonicacid;kyselina2-methylamino-5-naftol-7-sulfonova;kyselinan-methyl-i;n-methyliacid
• CAS NO: 22346-43-6
• Molecular Formula: C₁₁H₁₁NO₄S
• Molecular Weight: 253.27434
• EINECS: 244-924-4
• Mol File: 22346-43-6.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• Density: 1.542 g/cm³
• Refractive Index: 1.714
• CAS DataBase Reference: 4-hydroxy-7-methylamino-2-Naphthanlenesulfonicacid(CAS DataBase Reference)
• NIST Chemistry Reference: 4-hydroxy-7-methylamino-2-Naphthanlenesulfonicacid(22346-43-6)
• EPA Substance Registry System: 4-hydroxy-7-methylamino-2-Naphthanlenesulfonicacid(22346-43-6)

Safety Data

• Hazardous Substances Data: 22346-43-6(Hazardous Substances Data)

Usage

General Description

4-hydroxy-7-methylamino-2-Naphthanlenesulfonic acid, also known as Methyl Orange, is a synthetic compound commonly used as a pH indicator in laboratory settings. Its chemical structure consists of a naphthalene ring with a methylamino group and a hydroxy group, as well as a sulfonic acid group. Methyl Orange is commonly used in titrations to determine the endpoint of a reaction by changing color based on the pH of the solution. It is typically red in acidic conditions and yellow in alkaline conditions, making it a useful tool for determining the acidity or basicity of a solution in chemical analysis. Additionally, Methyl Orange is also used in the textile industry as a dye for silk and wool, and as a colorant in various products. However, it should be handled with care as it is toxic if ingested and can cause irritation to the skin and eyes.

InChI:InChI=1/C11H11NO4S/c1-12-8-2-3-10-7(4-8)5-9(6-11(10)13)17(14,15)16/h2-6,12-13H,1H3,(H,14,15,16)

Upstream product

• 87-02-5 7-amino-4-hydroxy-2-naphthalenesulfonic acid 
• 74-89-5 methylamine 

Relevant articles and documents

2 - (N-substituted amino) - 5-naphthol-7-sulfonic acid clean production process (by machine translation)

This invention belongs to the dyeing industry, relates to a new material in the field of technology of the dye intermediates, in particular 2 - (N-substituted amino) - 5-naphthol-7-sulfonic acid clean production process. To improve the quality of this invention, waste water is greatly reduced. 2 - (N-substituted amino) - 5-naphthol-7-sulfonic acid clean production process, the method comprises the following steps: A, condensation reaction; B, material after treatment; C, refining the filter cake. And the recovery and reuse of the filtrate. The method of the present invention that are used in the can be of various raw materials are purchased from the market, the compounds of the present invention and the use of the preparation process of the security process is, environmental protection, energy-saving. (by machine translation)

Copper complexes of sulpho groups containing disazo dyestuffs

The new disazo dyestuffs of the formula (I) STR1 in which the substituents and indices have the meaning given in the description, and salts thereof are outstandingly suitable for dyeing cellulose-containing materials and leather in blue shades having good wet- and light-fastnesses.