Direct Yellow 17 is a synthetic azo dye characterized by its red light yellow color. It is soluble in water, and its color varies depending on the pH level of the solution. In strong sulfuric acid, it appears as a yellow color, while in diluted conditions, it forms an orange precipitate. When hydrochloric acid is added to the dye solution, it forms a fluorescent orange-yellow precipitate. The addition of sodium hydroxide results in a dark color.
6537-65-1
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Basic information
- Product Name: Direct yellow 17
- Synonyms: Direct yellow 17;2'-[4-[[4,5-Dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]phenyl]-6-methyl-2,6'-bibenzothiazole-7-sulfonic acid disodium salt;C.I.18855;C.I.Direct Yellow 17
- CAS NO:6537-65-1
- Molecular Formula: C31H20N6Na2O7S4
- Molecular Weight: 762.76604
- EINECS: N/A
- Product Categories: N/A
- Mol File: 6537-65-1.mol
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Chemical Properties
- Melting Point: N/A
- Boiling Point: N/A
- Flash Point: N/A
- Appearance: /
- Density: N/A
- Refractive Index: N/A
- Storage Temp.: N/A
- Solubility: N/A
- CAS DataBase Reference: Direct yellow 17(CAS DataBase Reference)
- NIST Chemistry Reference: Direct yellow 17(6537-65-1)
- EPA Substance Registry System: Direct yellow 17(6537-65-1)
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Safety Data
- Hazard Codes: N/A
- Statements: N/A
- Safety Statements: N/A
- WGK Germany:
- RTECS:
- HazardClass: N/A
- PackingGroup: N/A
- Hazardous Substances Data: 6537-65-1(Hazardous Substances Data)
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6537-65-1 Usage
Uses
Used in Textile Industry:Direct Yellow 17 is used as a dye for coloring textiles, particularly in the textile industry. It is valued for its ability to produce a vibrant yellow color on various types of fabrics. The dye's properties, such as its acid and alkali resistance, light fastness, and water fading, make it suitable for use in this application.
Used in Leather Industry:
Direct Yellow 17 is also used as a dye in the leather industry for coloring leather products. Its resistance to acids and alkalis, as well as its light fastness, make it an ideal choice for use in this industry.
Used in Paper Industry:
In the paper industry, Direct Yellow 17 is employed as a dye for coloring paper products. Its ability to produce a bright yellow color, along with its resistance to acids, alkalis, and light fading, makes it a popular choice for use in this application.
Overall, Direct Yellow 17 is a versatile dye with various applications across different industries, including textile, leather, and paper, due to its color properties and resistance to various environmental factors.
Preparation
C.I. Direct Yellow 59 (C.I. 49000) diazo, and 2-(2-(4Aminophenyl)benzo[d]thiazol-6-yl)-6-methylbenzo[d]thiazole-7-sulfonic acid?coupling.Standard
Acid ResistanceFading
StainISO
5Check Digit Verification of cas no
The CAS Registry Mumber 6537-65-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,3 and 7 respectively; the second part has 2 digits, 6 and 5 respectively.Calculate Digit Verification of CAS Registry Number 6537-65:
(6*6)+(5*5)+(4*3)+(3*7)+(2*6)+(1*5)=111
111 % 10 = 1
So 6537-65-1 is a valid CAS Registry Number.
6537-65-1Upstream product
6537-65-1Downstream Products
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Direct yellow 17
