6420-09-3 Usage
Uses
Used in Textile Industry:
5-Amino-4-hydroxy-3-[[4'-[(1-hydroxy-4-sulfonaphthalen-2-yl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2,7-naphthalenedisulfonic acid trisodium salt is used as a dye for coloring textiles. Its unique color properties and solubility characteristics make it suitable for use in various textile applications, including navy blue shades and light purple hues.
Used in Analytical Chemistry:
5-Amino-4-hydroxy-3-[[4'-[(1-hydroxy-4-sulfonaphthalen-2-yl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2,7-naphthalenedisulfonic acid trisodium salt can be used as an analytical reagent in various chemical tests and assays. Its color-changing properties in response to different chemical environments make it a useful tool for detecting and measuring the presence of specific compounds or conditions.
Standard:
5-Amino-4-hydroxy-3-[[4'-[(1-hydroxy-4-sulfonaphthalen-2-yl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2,7-naphthalenedisulfonic acid trisodium salt's performance is evaluated based on several standard parameters, including acid resistance, alkali resistance, light fastness, soaping, water fading, and stain fading. According to the provided materials, it has a rating of 5 for ISO and 3 for AATCC in terms of acid resistance, indicating a high level of resistance to acidic environments. Its alkali resistance is rated 3-4 for ISO and 3 for AATCC, suggesting moderate resistance to alkaline conditions. The light fastness is rated 1 for ISO and 2 for AATCC, indicating that the color may fade under direct sunlight. The soaping rating is 1-2 for ISO and 2 for AATCC, suggesting that the color may bleed when washed with soap. The water fading and stain fading ratings are both 2 for ISO and AATCC, indicating moderate resistance to fading when exposed to water or stained.
Preparation
3,3′-Dimethylbenzidine double nitriding, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupling, and then and 4-Hydroxynaphthalene-1-sulfonic acid coupling.
Standard
Acid Resistance
Fading
Stain
ISO
5
AATCC
3
Check Digit Verification of cas no
The CAS Registry Mumber 6420-09-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,2 and 0 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 6420-09:
(6*6)+(5*4)+(4*2)+(3*0)+(2*0)+(1*9)=73
73 % 10 = 3
So 6420-09-3 is a valid CAS Registry Number.
