6846-33-9
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Basic information
- Product Name: C.I. Acid Red 81
- Synonyms: C.I. Acid Red 81;4-[(2,7-Dihydro-3-methyl-2,7-dioxo-3H-dibenz[f,ij]isoquinolin-6-yl)amino]benzenesulfonic acid sodium salt;C.I.68200
- CAS NO:6846-33-9
- Molecular Formula: C23H15N2NaO5S
- Molecular Weight: 454.43037
- EINECS: N/A
- Product Categories: N/A
- Mol File: 6846-33-9.mol
- Article Data: 0
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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: C.I. Acid Red 81(CAS DataBase Reference)
- NIST Chemistry Reference: C.I. Acid Red 81(6846-33-9)
- EPA Substance Registry System: C.I. Acid Red 81(6846-33-9)
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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: 6846-33-9(Hazardous Substances Data)
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6846-33-9 Usage
Description
C.I. Acid Red 81 is a synthetic dye characterized by its colorful red-blue hue and solubility in alcohol. It exhibits strong color properties and is known for its ability to produce a blue-ray red shade when combined with strong sulfuric acid, which then dilutes into a pink color.Uses
Used in Textile Industry:C.I. Acid Red 81 is used as a dye for coloring textiles, providing a vibrant red-blue shade to fabrics. Its light fastness, soaping, perspiration fastness, and resistance to oxygen bleaching and seawater make it a suitable choice for various textile applications.
Used in Colorant Industry:
C.I. Acid Red 81 is used as a colorant in various industries, such as plastics, paints, and coatings, to impart a rich red-blue color to the products. Its properties, including fading and staining resistance, make it a reliable option for coloration in different applications.
Used in Analytical Chemistry:
C.I. Acid Red 81 can be used as an analytical reagent in chemical analysis, taking advantage of its color-changing properties in response to different chemical environments, which can be useful for detecting specific substances or monitoring chemical reactions.
Preparation
1-Bromo-4-(N-methylacetamido)anthraquinone?condensation into 6-Bromo-3-methyl-3H-naphtho[1,2,3-de]quinoline-2,7-dione, then with aniline condensation, again with hair smoke sulphonated sulfuric acid, and translated into sodium salt.Standard
Light FastnessFading
StainISO
5-6Check Digit Verification of cas no
The CAS Registry Mumber 6846-33-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,8,4 and 6 respectively; the second part has 2 digits, 3 and 3 respectively.Calculate Digit Verification of CAS Registry Number 6846-33:
(6*6)+(5*8)+(4*4)+(3*6)+(2*3)+(1*3)=119
119 % 10 = 9
So 6846-33-9 is a valid CAS Registry Number.
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C.I. Acid Red 81
