Name:C.I.Acid Red 131
Molecular Structure: Single azo class
Molecular Formula:
Molecular Weight:
CAS Registry Number:12234-99-0
Manufacturing Methods :
Properties and Applications: blue-ray red
Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
Fading | Stain | Fading | Stain | Fading | Stain | |||
ISO | 4-5 | 3 | 5 | 4-5 | 2 | 3 | 4 | 4 |
AATCC | 5 | 4-5 | 4-5 | 4-5 | 4-5 | 4-5 | ||
A Comprehensive Overview
Acid Red 131, known by its chemical classification as C.I. Acid Red 131, is a dye belonging to the azo class, distinguished by its vibrant red color. This article provides a thorough understanding of Acid Red 131, encompassing its molecular structure, manufacturing methods, properties, applications, and standards for evaluation.
Molecular Structure
Acid Red 131 is categorized within the single azo class of dyes, characterized by the presence of an azo group (N=N) within its molecular structure. Unfortunately, the exact molecular structure of Acid Red 131 is not provided here, but being an azo dye, it is expected to have a diazo linkage (-N=N-), typically connecting aromatic rings.
Molecular Formula and Molecular Weight
The molecular formula for Acid Red 131 represents the elemental composition of the dye. However, the precise molecular formula for Acid Red 131 is not provided in the given information. The molecular weight is also not mentioned.
CAS Registry Number
Acid Red 131 is uniquely identified by its CAS (Chemical Abstracts Service) Registry Number, which is 12234-99-0. This number is vital for accurate identification and referencing of the compound in chemical databases.
Manufacturing Methods
Unfortunately, specific details regarding the manufacturing methods for Acid Red 131 are not provided in the given information. Manufacturing methods typically involve complex chemical processes and are proprietary to the manufacturer.
Properties and Applications
Color and Appearance
Acid Red 131 is described as a blue-ray red dye, indicating a vibrant and intense red color.
Standard Properties
The provided standards for evaluating Acid Red 131 are crucial in assessing its suitability for various applications. The standards include:
Light Fastness
- ISO: 4-5 (on a scale of 1-8)
- AATCC: 5 (on a scale of 1-5)
Light fastness indicates the dye’s resistance to fading when exposed to light. A higher rating suggests better resistance to fading.
Soaping Fastness
- ISO: 3 (on a scale of 1-5)
- AATCC: 4-5 (on a scale of 1-5)
Soaping fastness is a measure of the dye’s resistance to fading or bleeding during washing and soaping processes.
Perspiration Fastness
- ISO: 5 (on a scale of 1-5)
- AATCC: 4-5 (on a scale of 1-5)
Perspiration fastness assesses how well the dye withstands exposure to perspiration without fading or staining.
Oxygen Bleaching Fastness
- ISO: 4-5 (on a scale of 1-5)
This measures the dye’s resistance to fading when exposed to oxygen bleaching agents.
Fastness to Seawater
- ISO: 2 (on a scale of 1-5)
This evaluates the dye’s ability to resist fading when exposed to seawater.
Stain Resistance
- ISO: 4 (on a scale of 1-5)
- AATCC: 4-5 (on a scale of 1-5)
Stain resistance indicates how well the dye resists staining from external substances.
Applications
Acid Red 131, with its brilliant red hue, finds applications in various industries. It is commonly used in the textile industry for dyeing natural fibers like wool and silk. The dye is also utilized in the paper industry for coloring paper products.
Conclusion
Acid Red 131, known as C.I. Acid Red 131, is a red dye belonging to the azo class, possessing a vibrant red hue. Despite not having the exact molecular formula and structure provided, its unique CAS Registry Number is 12234-99-0. The dye exhibits various properties such as light fastness, soaping fastness, perspiration fastness, and stain resistance, making it suitable for applications in the textile and paper industries. Understanding the chemical and physical properties of Acid Red 131 is vital for its effective utilization across different domains.
