We mainly produce acid dyes and dye intermediates, and we are a professional Wholesale Acid Yellow 49 dyes manufacturer of anthraquinone acid dyes in China.

  • Acid Yellow 49
  • Acid Yellow 49
  • Acid Yellow 49
  • Acid Yellow 49
  • Acid Yellow 49
  • Acid Yellow 49
Tnyanyl® A Dyes Series

Acid Yellow 49
Weakly acidic yellow GR

- No blocking effect, good covering properties
- Good dyeing properties, excellent combinability
- Excellent levelling and migration properties
- High light fastness, wide range of shades
- Levelling acid dyes with monosulfonic group

Is mainly used for dyeing pale shades in polyamide.
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Dye Name Color Card
Light (Xenon)

Dyeing Depth
ISO 105 C10

ISO 105 E04
ISO 105 X12
Hot Pressing 
Chlorination water 

Dry Rub
Wet Rub
Acid Yellow 49 6
100 1 5

5 4-5 4-5

Dye Name: Weak Acidic Yellow GR, Weak Acidic Yellow NFC, Weak Acidic Yellow E-4G, Weakly Acidic Yellow GR
CAS Registry Number: 12239-15-5
Molecular Structure: Monoazo dyes series
Molecular Formula: C16H12Cl2N5NaO3S
Molecular Weight: 448.26
Samples: Free samples are available, PSS can be sent to you before shipment. The quality of this item is very stable and once you confirm the quality we can deliver to you directly without PSS.
Tianya Industry is a fine chemical enterprise that engages in R&D, production, and operation of acid dyes and intermediates, which has obtained an ISO9001 certificate. Contact us freely for more details.

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Industry knowledge

What safety matters need to be paid attention to when storing and transporting Acid Yellow 49 DYES SERIES?

It is crucial to ensure safety during storage and transportation of Acid Yellow 49 DYES SERIES. Since dyes are classified as chemicals, a series of strict safety regulations and operating guidelines must be followed to prevent possible accidents and environmental pollution. Here are some aspects you should pay attention to:
The choice of storage environment is crucial. Dyes should be stored in a dry, cool, well-ventilated dedicated warehouse, away from fire, heat and direct sunlight. At the same time, the floor of the warehouse should be moisture-proof to prevent the dye from clumping or chemical reactions due to moisture. In addition, warehouses should be equipped with appropriate fire protection facilities and undergo regular inspection and maintenance to ensure timely and effective response in emergencies.
During storage, the packaging container of the dye should be kept intact and the label clearly visible. Different types of dyes should be stored separately to avoid confusion or cross-contamination. For opened dyes, make sure the container mouth is tightly closed to reduce contact with oxygen in the air and prevent oxidative discoloration or deterioration.
In terms of transportation, you should choose a logistics company with corresponding qualifications and experience for transportation. Transport vehicles should be thoroughly cleaned and inspected before loading to ensure there are no residues or contaminants. Dyes should be packaged appropriately to ensure they do not leak, break, or become loose during transportation. At the same time, the appropriate transportation method should be selected according to the nature of the dye, such as land transportation, sea transportation or air transportation, and relevant transportation regulations and safety requirements should be followed.
During the transportation process, drivers and escorts should hold corresponding professional qualification certificates and understand the properties of dyes and emergency treatment measures. They should strictly abide by traffic rules and ensure that transport vehicles drive safely and stably. During transportation, the goods should be inspected regularly to ensure that no abnormalities occur.
The development and implementation of emergency plans are also essential. Detailed emergency plans should be developed, including measures to respond to emergencies such as fires and leaks. At the same time, emergency drills should be conducted regularly to improve employees’ emergency handling capabilities and collaboration levels.
The cultivation of environmental awareness is also crucial. During storage and transportation, the impact on the environment should be minimized. For example, choose environmentally friendly packaging materials to reduce waste generation; take energy-saving measures during transportation to reduce carbon emissions.

How can the performance of Acid Yellow 49 be adjusted and optimized for specific application areas?

Tuning and optimizing the performance of Acid Yellow 49 DYES SERIES products for specific application areas is a crucial task. Different application fields have different requirements for dye performance. Therefore, we need to make fine adjustments and optimizations to our products according to specific application scenarios to meet customer needs and enhance the market competitiveness of our products.
We need a deep understanding of the process characteristics and requirements of specific application areas. For example, in the field of textile dyeing, customers may pay more attention to the color fastness, brightness and washability of dyes; while in the field of ink manufacturing, customers may pay more attention to the dispersion, stability and printing effect of dyes. Therefore, we need to conduct in-depth communication and exchanges with customers to understand their specific needs and expectations, so as to provide a basis for subsequent performance adjustments and optimizations.
We can perform performance adjustments and optimizations on Acid Yellow 49 DYES SERIES products from the following aspects:
Formula adjustment: Improve the performance of the dye by changing the formula of the dye, such as adding additives, adjusting pH, etc. For example, in textile dyeing, an appropriate amount of fixing agent can be added to improve color fastness; in ink manufacturing, the type and amount of dye dispersant can be adjusted to improve the dispersion and stability of the ink.
Particle size control: The particle size of the dye directly affects its performance in applications. By controlling the particle size distribution of the dye, its dispersion and permeability in different media can be optimized. For example, in the field of coatings, smaller particle sizes allow dyes to better penetrate into the substrate, improving the uniformity and hiding power of the coating.
Hue and intensity adjustment: In response to customers' special requirements for hue and intensity, we can fine-tune the hue or enhance the intensity of the dye. This usually involves modification of the dye's molecular structure or the addition of specific color enhancers.
Environmental adaptability optimization: Considering the differences in environmental conditions (such as temperature, humidity, light, etc.) that different application fields may face, we can optimize the environmental adaptability of dyes. For example, in dyeing outdoor products, the lightfastness and weather resistance of the dye can be increased to ensure that the color of the product remains unchanged during long-term use.
During the performance adjustment and optimization process, we also need to conduct a large amount of experimental verification and performance testing. This includes performance testing in the laboratory, pilot production and actual application testing at customer sites. Through these tests, we can ensure that the adjusted product performance meets customer requirements and performs well in actual applications.
We also need to establish a complete after-sales service system to provide customers with timely technical support and solutions. During the application process, customers may encounter some problems or require further technical consultation, and our professional team should be able to respond quickly and provide effective assistance.
Adjusting and optimizing the performance of Acid Yellow 49 DYES SERIES products for specific application areas is a comprehensive task that requires an in-depth understanding of customer needs, fine adjustment of product formulas and performance parameters, and sufficient experimental verification and performance testing. Only in this way can we provide customers with satisfactory products and services and win market recognition and trust.