In the highly competitive global colorant industry, Acid Yellow 36—commonly known as Metanil Yellow or C.I. 13065—stands as an essential monoazo dyestuff. Widely preferred for its exceptional solubility in water, vibrant golden-yellow hue, and affinity for proteinaceous fibers and cellulose substrates, this compound is a cornerstone of modern textile, paper, leather, and industrial coloring workflows. As dynamic regulatory frameworks and sustainable production standards shift the purchasing landscape, global procurement teams require more than just a chemical supplier; they need strategic OEM/ODM manufacturers capable of delivering rigorous batch consistency, environmental safety clearances, and optimized cost structures.
Tianjin Sunrise Chem Group operates at the vanguard of this industrial segment. Guided by decades of international export experience and powered by a highly integrated production facility, we address the precise structural and logistical needs of global buyers. Our chemical design processes are built on modern laboratory testing, allowing us to manipulate salt parameters, solid content percentages, and physical form factors (powder vs. low-dust granules) to optimize for specific process requirements. Understanding the technical, structural, and ecological variables of Acid Yellow 36 sourcing is key to building resilient supply chains.
Acid Yellow 36 is synthesized through the diazotization of metanilic acid followed by coupling with diphenylamine. Structurally, it functions as an anionic dye containing a sulfonic acid functional group which yields exceptional water solubility and enables electrostatic binding with positively charged groups in protein fibers (wool, silk) and polyamide polymers.
To help global chemical QA professionals run pre-purchase risk reviews, the baseline chemical profile of our premium-grade OEM Acid Yellow 36 is detailed below:
| Parameter Description | Target Chemical Specification (Standard Grade) | High-Concentration / OEM Custom Grade |
|---|---|---|
| Color Index Name | C.I. Acid Yellow 36 | C.I. Acid Yellow 36 (Custom Refined) |
| Chemical Structure Class | Monoazo Class (Sulfonated diphenylamine derivative) | Purified Monoazo |
| CAS Registry Number | 587-98-4 | 587-98-4 |
| Molecular Formula / Weight | C18H14N3NaO3S | 375.38 g/mol | C18H14N3NaO3S | 375.38 g/mol |
| Appearance Profile | Fine Yellow-Brown Powder | Uniform Granular or Low-Dusting Formulations |
| Strength Value (Colorimetric) | 100% (Standard) | 120% to 150% (High-Concentration options) |
| Moisture Content (%) | ≤ 5.0% | ≤ 2.5% (Low-moisture vacuum packed) |
| Insoluble Matter in Water | ≤ 0.5% | ≤ 0.1% (Superfine filtration grade) |
| pH Transition Interval | pH 1.2 (Red) - pH 2.3 (Yellow) | Precisely buffered for indicator applications |
Tianjin Sunrise Chem Group specializes in manufacturing high-quality dyestuffs, serving as a reliable supplier across the global dye and pigment industry. Our chemical product portfolio includes Direct dyes, Acid dyes, Basic dyes, Sulphur dyes, Solvent dyes, Liquid dyes, and Fluorescent dyes.
Backed by decades of industry and export experience, we have built a reputation for reliability and excellence, serving clients from diverse sectors including denim, textile, leather, paper, and plastic. We highly focus on goods quality and stability. Every batch is tested prior to dispatch to ensure consistency. With ZDHC Level 3 and GOTS certifications, our customers receive guaranteed quality for compliant international production.
Cooperating with textile and paper mills for many years shows that the factory has established a strong and reliable business relationship. This kind of long-term collaboration brings numerous benefits, such as consistent orders, shared resources, and mutual support. It indicates that the factory has a good track record of delivering quality products and meeting the needs of its partners.
Our mission is to drive business growth by providing reliable and customized products. Our goal is to make a significant contribution to our customers' success by consistently delivering first-class products and exceptional customer service. By building lasting partnerships, we strive to be a catalyst for our clients' success.
Standard color index specifications do not always align with specialized industrial application configurations. At Tianjin Sunrise Chem Group, we understand that viscosity, pH buffering, particle size, and salt-content profiles play critical roles in specialized dyeing processes. Our OEM service focuses on custom-tailored adjustments designed to improve process efficiency and yield:
High inorganic salt concentrations can cause issues in sensitive liquid formulations or paper mill operations. We offer ultra-filtered, desalinated variations of Acid Yellow 36 for applications requiring low salt profiles.
To improve factory floor safety and handling efficiency, we manufacture dust-free granular versions of Acid Yellow 36, minimizing airborne particles during bulk blending and dissolution stages.
We offer ready-to-use stable liquid solutions of Acid Yellow 36 with customized concentration levels, designed to streamline automatic dosing systems in modern pulp coloring and textile lines.
As industrial buyers manage global supply chains, procuring from Tianjin, China offers distinct structural benefits. Tianjin Sunrise Chem Group utilizes local industrial infrastructure to provide competitive pricing and reliable supply.
Key factors supporting our chemical export logistics include:
Environmental protection is the cornerstone of our innovation. We dedicate ourselves to providing eco-friendly, high-quality colorants that balance productivity with environmental harmony, driving the industry towards a more sustainable development path while delivering high-performance products—for a greener textile industry and a sustainable future.
Our chemical management and production processes are aligned with major international standards:
The ZDHC program is a collaborative effort by leading brands, retailers, and suppliers in the textile and footwear industry to reduce the use of hazardous chemicals. Achieving ZDHC Level 3 certification indicates that our company has implemented chemical management procedures and met the requirements for chemical handling, wastewater treatment, and pollution prevention.
The Global Organic Textile Standard (GOTS) ensures the organic status of textiles from harvesting raw materials to environmentally and socially responsible manufacturing. The GOTS certification guarantees that textiles are made from organic fibers, chemical inputs are minimized, and strict environmental and labor standards are met throughout the production process.
Both certifications are important in the context of sustainable and responsible textile production. ZDHC focuses on the elimination of hazardous chemicals, while GOTS certification guarantees the organic and ethical aspects of textile production. Our QC technicians monitor the entire process, testing each batch for color fastness, solubility, and purity before export.
Acid Yellow 36 is utilized across several major industrial applications, each requiring specific technical performance profiles:
Widely used on wool, silk, and polyamide (nylon) fibers. Acid Yellow 36 yields bright golden-yellow shades with good leveling properties under acidic dye bath conditions.
Used in paper mills for surface sizing and tissue paper coloring. Its excellent water solubility ensures uniform dye distribution without speckling.
Provides deep penetration and level dyeings on chrome-tanned and vegetable-tanned leathers, serving as a base color for diverse yellow and tan finishes.
Blended into solvent or water-based wood stains to highlight natural grain patterns with warm yellow and amber undertones.
Used in select industrial cleaning formulations and specialty soap products where color stability and water solubility are required.
Its clear pH transition interval makes it a useful component in laboratory test solutions and chemical indicator reagents.
Explore our warehousing, quality checks, container packing operations, and product delivery workflows. We manage each step to ensure that all shipments arrive in optimal condition.
The global dyestuff market is experiencing shifts due to regulatory changes in chemical safety and environmental standards. As key industrial importing regions like the European Union (under REACH protocols) and North America tighten restrictions on hazardous chemical residuals, traditional suppliers using outdated processing methods are facing constraints.
This shifting environment creates opportunities for factories that invest in advanced chemical synthesis and waste treatment. Tianjin Sunrise Chem Group addresses these changes by upgrading our production equipment and monitoring purification stages, ensuring that raw material inputs and finished dyes meet international environmental limits.
For procurement directors, building a stable supply chain requires looking beyond unit cost. Key aspects of risk management include:
Sunrise
