Mordant Blue 29 CAS 1667-99-8 C. I. 43825; Chrome Azurol S

• CAS No.: 1667-99-8
• Formula: C23h13cl2na3o9s
• EINECS: 216-787-0
• Carboxyl No.: Dicarboxylic Acid
• Alkyl No.: Saturated Acid
• Appearance: Powder
• Model NO.: SUREST-100
• Source: Hydrolysis
• Colour: Reddish Brown
• Shelf Life: 2 Years
• Stock: Available
• Molecular Weight: 605.28
• Water Solubility: Slightly Soluble
• Color: Reddish Brown
• Transport Package: 25kg or 200 Kg/Barrel
• Specification: 98%min
• Trademark: Surest
• Origin: China
• HS Code: 3207200000
• Production Capacity: 1000 Tons Yearly

Product Description

Mordant Blue 29

 

Name	Mordant Blue 29
Synonyms	C.I. 43825; Chrome Azurol S; Trisodium 5-[(3-carboxylato-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(2,6-dichloro-3-sulphonatophenyl)methyl]-2-hydroxy-3-methylbenzoate
Molecular Structure
Molecular Formula	C23H13Cl2Na3O9S
Molecular Weight	605.28
CAS Registry Number	1667-99-8
EINECS	216-787-0

 

 
Chemical Property/Description
The appearance is reddish-brown powder, it is brown-yellow solution after soluble in water, slightly soluble in water, the aqueous solution is reddish-brown, the maximum absorption wavelength is 458nm, and it is irritating.


Main Uses:

Mordant Blue 29 is a triphenylmethane acid dye, which can form colored complexes with aluminum, beryllium, copper, iron, zirconium and vanadium plasma, so it can be used as a color developing agent for the colorimetric determination of these ions.

Mordant Blue 29 and aluminum form 1∶1, 1∶2 and 1∶3 complexes under high acidity, among which 1∶2 complex is the most stable. Since the absorbance of the product itself and its complex with aluminum has a great relationship with the pH value of the solution, the control of the pH value is very important in the determination.

Generally, pH5 ~ 5.5 and absorption wavelength of 550nm are used as the colorimetric determination conditions for aluminum. In addition, it can generally be used as a metal indicator in complexometric titration of aluminum, titanium and zirconium.