1667-99-8 Usage
Description
Mordant Blue 29, also known as Chromeazurol S (CAS# 1667-99-8), is a red light blue dye that is soluble in water, slightly soluble in ethanol, and forms a dark brown powder. It is known for its various color-changing properties when exposed to different conditions, such as concentrated sulfuric acid, sodium hydroxide, and dilution.
Uses
Used in Dye Industry:
Mordant Blue 29 is used as a dye for various applications due to its color-changing properties and ability to produce a range of shades from red light brown to magenta and orange. It is particularly useful in the dyeing of textiles and other materials.
Used in Organic Synthesis:
Mordant Blue 29 is also used as a compound in organic synthesis, contributing to the creation of dyes and metabolites.
Standard:
Mordant Blue 29 has been tested and meets certain standards in terms of its fastness and reactivity with different substances:
Ironing Fastness: ISO 4
Light Fastness: ISO 3
Fulling: ISO 4
Perspiration Fastness: ISO 2
Soaping: ISO 4-5
Water: ISO 4
Alkali: ISO 5
Acid: ISO 4
These standards indicate the dye's performance and stability under various conditions, making it a reliable choice for different applications in the dye and textile industries.
Preparation
2,4-Dichloro-3-formylbenzenesulfonic acid?and 2-Hydroxy-3-methylbenzoic acid condensation, its product oxidation and changed into sodium salt.
Standard
Ironing Fastness
Alkali
Acid
ISO
4
Purification Methods
The crude phenolic triphenylmethanecarboxysulfonic acid triNa salt (40g) is dissolved in water (250mL) and filtered. Then conc HCl (50mL) is added to the filtrate, with stirring. The precipitate is filtered off, washed with HCl (2M) and dried. It is redissolved in water (250mL), and precipitation is repeated twice more in a water bath at 70o. It is dried under vacuum over solid KOH (first), then P2O5 [Martynov et al. Zh Analyt Khim 32 519 1977]. It has also been purified by paper chromatography using n-butanol, acetic acid and water (7:3:1). First and second spots were extracted. It chelates Al and Be. It is used also for estimating fluoride. [Beilstein 11 IV 707.]
Check Digit Verification of cas no
The CAS Registry Mumber 1667-99-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,6 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1667-99:
(6*1)+(5*6)+(4*6)+(3*7)+(2*9)+(1*9)=108
108 % 10 = 8
So 1667-99-8 is a valid CAS Registry Number.
InChI:InChI=1/C23H16Cl2O9S.3Na/c1-9-5-11(7-13(20(9)26)22(28)29)17(12-6-10(2)21(27)14(8-12)23(30)31)18-15(24)3-4-16(19(18)25)35(32,33)34;;;/h3-8,26H,1-2H3,(H,28,29)(H,30,31)(H,32,33,34);;;/q;3*+1/p-3/b17-12-;;;
