Basic Orange 2

    • Product Name: Basic Orange 2
    • Alias: C.I. 15510
    • Einecs: 20262-58-2
    • Mininmum Order: 1 g
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    806372

    Common Name Basic Orange 2
    Chemical Name 4-[(2-hydroxy-5-nitrophenyl)azo]benzenesulfonic acid sodium salt
    Color Index Number C.I. 50270
    Molecular Formula C16H11N2NaO5S
    Molecular Weight 382.32
    Appearance Orange powder
    Solubility In Water Soluble
    Application Textile dye
    Melting Point Decomposes
    Cas Number 633-96-5

    As an accredited Basic Orange 2 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Basic Orange 2 is packaged in a 25 kg net weight fiber drum, sealed with a plastic liner for safe chemical storage.
    Shipping Basic Orange 2 should be shipped in tightly sealed, clearly labeled containers to prevent leaks or spills. It must be handled according to chemical transport regulations, kept away from incompatible substances, and protected from moisture and direct sunlight. Proper documentation and hazard labeling are required to ensure safe and compliant shipping.
    Storage Basic Orange 2 should be stored in a tightly sealed container in a cool, dry, and well-ventilated area, away from direct sunlight and incompatible materials such as strong oxidizers. The storage area should be protected from moisture and sources of ignition. Proper labelling is essential, and access should be restricted to trained personnel to ensure safe handling.
    Application of Basic Orange 2

    Purity 98%: Basic Orange 2 with a purity of 98% is used in textile dyeing applications, where it ensures vibrant shade consistency and high color yield. Molecular Weight 350.43 g/mol: Basic Orange 2 with a molecular weight of 350.43 g/mol is used in paper tinting, where it provides uniform particle dispersion and reliable color intensity. Melting Point 132°C: Basic Orange 2 with a melting point of 132°C is used in ink formulation, where it enhances thermal stability and prevents pigment degradation. Particle Size 5 microns: Basic Orange 2 with a particle size of 5 microns is used in leather finishing, where it improves coverage uniformity and depth of color. Stability pH 4–9: Basic Orange 2 exhibiting pH stability from 4 to 9 is used in water-based paints, where it maintains color performance under varying pH conditions. Light Fastness Grade 4: Basic Orange 2 with a light fastness grade of 4 is used in plastic coloring, where it resists fading and retains its chromatic properties under UV exposure. Solubility 80 g/L at 25°C: Basic Orange 2 with a solubility of 80 g/L at 25°C is used in aqueous staining solutions, where it enables homogeneous dispersion and efficient substrate penetration. Viscosity Grade Low: Basic Orange 2 with low viscosity grade is used in aerosol sprays, where it allows smooth application and even color distribution. Residue on Ignition ≤0.2%: Basic Orange 2 with a residue on ignition of ≤0.2% is used in specialty coatings, where it reduces unwanted ash and contributes to cleaner film formation. Heat Stability up to 100°C: Basic Orange 2 with heat stability up to 100°C is used in candle manufacturing, where it offers persistent coloration without thermal decomposition.

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    Certification & Compliance
    More Introduction

    Introducing Basic Orange 2: A Manufacturer’s Perspective

    Our Work with Basic Orange 2

    For decades, we have produced synthetic dyes, always focusing on bringing consistency, safety, and performance to industrial clients. Basic Orange 2, also known in many trade circles as Orange II or C.I. 113, stands as a staple in our dye portfolio. Since we first set up our colorant lines for this basic dye, our technicians have honed each batch to minimize impurities and increase reliability. Whether you’re blending for textiles, processing paper, mixing in scientific research, or adjusting leather color, this product finds a place simply because it works—and keeps working through cycles and changes in demand.

    Technical Qualities Manufacturers Notice

    Basic Orange 2 comes to us as an orange powder, with a chemical structure rooted in azo compounds. What makes this particular dye stand out on a practical level is its quick solubility in water and the level of brilliance in the final shade. That straightforward chemistry saves time during production—fast dissolution means operators spend less time preparing dye liquors and can predict minimal dye waste at the start of every shift. In textile factories, even teams that run continuous dyeing processes rely on this behavior for predictable throughput.

    Batch to batch, we focus on keeping the strength at a high standard, usually measured against the manufacturer’s own internal spectrophotometric benchmarks. For direct dyeing, the typical application strength runs between 1% to 4% on the weight of fiber, but experienced users know that the control lies in how well the manufacturer keeps impurities out and sulfate levels low. Instead of listing numbers, what operators often say is they want their dye to behave exactly as the previous drum did—and that’s what we engineer for in every lot.

    What Actually Matters for Users

    No matter what industry you operate in, unexpected variance in dyes causes expensive interruptions. The most vocal feedback we hear from end-users, whether they’re textile dyers or paper mill engineers, is about repeatability. In real practice, a large textile plant relies on the color landing in the same target range every single manufacturing run. If shade shifts, production stops or re-runs cost time and money.

    In practice, there’s also a safety and handling question. Unlike some legacy products in the same orange color range, Basic Orange 2 dissolves entirely at working temperatures below 60°C, which means less energy use. Since the powder doesn’t clump or aggregate, there’s little risk of foreign matter affecting your machinery or leading to uneven streaking in batches. We keep dust levels controlled during packing and shipping through moisture-tight seals, so users report less mess in the dyeroom and warehouse.

    Reasons Industries Choose Basic Orange 2 Over Alternatives

    From a manufacturer’s position, we have tested and produced many other basic dyes and direct dyes. Synthetic options like Basic Orange 21 or Basic Orange 31 also appear in international markets, but industry professionals usually select Basic Orange 2 for several clear reasons. First, its molecular structure gives a shade and brightness that others struggle to match without extra additives. Dyers working with viscose, acrylic, silk, and even paper pulps get a highly visible effect without layering additional colorants.

    Alternative orange dyes—especially natural ones or complex synthetics—bring challenges. Either they bleed more easily in most washing cycles or they call for fixatives and mordants that add cost and slow down overall process speed. Because the molecular arrangement in Basic Orange 2 resists these bleed behaviors under normal pH ranges, many of our clients see a direct reduction in quality complaints coming from end customers.

    We’ve also worked with clients on aftercare testing. Some dyes fade after repeated sunlight exposure or repeated laundry cycles—Basic Orange 2 handles well under ISO washing and lightfastness tests for a basic dye. It’s not intended for military or high-demand outdoor uniforms, but for general purpose and indoor-use textiles, it stands up to repeated wear better than most dyes in the same class.

    Expert Use Cases Across Sectors

    Textile and garment operations remain our main clients for Basic Orange 2, particularly in South Asia and parts of Africa where mass-market cotton and viscose blends rely on staple colorants. Our experience also extends to paper manufacturing—colored notepads, book grades, and some specialty packaging receive treatment baths based on this dye. Large-volume batch facilities favor the speed at which the dye integrates into their process water.

    Leather goods and artificial leather segments use a thinner concentration. We’ve helped two major shoe manufacturers update their coloring steps for efficiency, because they noticed that other oranges left uneven tone or migrated during the drying phase. Our technical experts worked with their chemists to reformulate so that color stays locked into the surface grain, avoiding rubbing or peeling seen with cheaper substitutes.

    Students and researchers in laboratories also reach out for Basic Orange 2, since the vivid color assists in demonstration setups and certain chemical analyses. While we don’t market directly to education, our quality and documentation make the dye a common choice for those who require traceable purity and a clear visible spectrum.

    Regulatory Matters and Sustainability

    We pay attention to evolving regulatory guidance around azo dyes. Any time a region discusses new lists or labeling needs, we provide full data for compliance reviews. Our internal records track impurity levels and aromatic amines so that shipments remain well under current legislative limits found in Europe, Japan, and the Americas. Our own quality assurance teams run checks on each finished lot to certify it before leaving our plant. Full transparency in supply and content builds client trust and maintains longstanding relationships.

    On the manufacturing floor, sustainability has moved from a conversation to an expectation among responsible producers. We’ve upgraded our facilities to recover process water, tighten cleaning cycles, and reduce powder loss during handling. Our packaging comes from locally sourced, recyclable materials, and we encourage clients to return drums for refilling rather than disposal. Many customers want to know that their inputs don’t drive excessive environmental impact; Basic Orange 2 is engineered to meet this demand, with minimized water and energy use during both its own production and client application.

    Sentiment around chemical safety and carbon footprint now reaches procurement offices across the globe. We see a strong trend where buyers ask not just for performance, but for evidence of sound environmental practices—reduced waste, improved safety data, and the lowest possible energy draw. In conversations with buyers, we field direct requests for environmental audits and documentation. Our team provides these without rotating through middlemen or passing clients around.

    Challenges and Practical Realities

    Across worldwide business, every year brings new constraints. Import and export regulations, changes in chemical policy, rising transportation costs, and raw material volatility squeeze manufacturers at every end. Over the last decade, Basic Orange 2’s main raw materials have remained stable thanks to deep supplier relationships and direct contracts. Whenever volatility comes—be it from commodity price swings or logistic backlogs—we keep a buffer in finished stock so that our customers receive timely deliveries.

    Seasonal demand spikes do surface. Textile demand in advance of spring and autumn runs at double or triple the usual volume. Our facility operates year-round, so instead of scrambling during rush periods, we smooth output through advance rolling forecasts with key buyers. This keeps staff in employment, avoids last-minute orders, and lets clients communicate openly about schedules and expectations.

    Changes in workplace standards also shape our daily practices. Some years ago, standard industrial ventilation and housekeeping were enough to manage powder dust or spills. Now, staff work within modernized, climate-controlled facilities, with dust suppression systems and real-time air quality monitoring. Continuous safety training for handling both dye powders and auxiliary chemicals is standard. In more than one case, our experience distributing to high-standard export markets led us to adopt stricter in-house limits than legally required, simply to keep both our staff and end users safe.

    What We’ve Learned as a Basic Dye Producer

    Manufacturing, at its core, deals with variation. Our edge comes from minimizing avoidable variation—be it in dye strength, pourability, solubility, or logistic control. Buying directly from a chemical producer means you limit the hands that touch a product, which knocks down the risk of adulteration or quality slips. Our direct relationships with textile, paper, and research customers keep us sharp—constructive complaints get action, advice on improving handling gets answered, and next-generation adjustments to product lines grow from day-to-day field feedback.

    Nobody wants surprises at scale. As one factory manager told us after a successful run: “It just does its job every time.” Steady product equals steady business, for us and for every manufacturer downstream. Our own technicians take pride in building colorants that stay true from the drum to the final fabric. The best compliment arrives not just through repeat orders, but from seeing how many of our clients hold multi-year partnerships and still trust a product we first launched decades ago.

    Our Professional Advice for Using Basic Orange 2

    New clients often reach out asking how to adapt processes for Basic Orange 2. Our advice comes from actual plant experience, not a sales sheet. Any operator should use clean, filtered process water and run a test dye batch with small increments in depth. Avoid over-alkalizing, as extreme pH eats into shade strength. Do not combine with reducing agents unless working on specialized blends, because these may break the azo bond and dull the color. For those exploring blended or multi-hue palettes, we recommend combining Basic Orange 2 with compatible basic blue or yellow dyes—but always check compatibility in a controlled environment before full-scale production to avoid unexpected interference.

    Storage needs minimal fuss; keep drums dry and out of direct sunlight. We designed our packaging to prevent moisture ingress during normal warehouse conditions, including monsoon periods in even the most humid regions. If powder does cake at the surface, simple breaking with a clean tool restores flow—no need for additional chemical agents or drying. We supply usage and cleanup training as part of technical support for new industrial clients, and provide continuous improvement insights based on what our field staff observe in customer plants.

    Performance Feedback from Real Manufacturing Environments

    Close collaboration with hundreds of plant managers gives us a clear sense of where Basic Orange 2 excels and where improvements still matter. Textile dyehouse teams continually report solid results in everyday direct dyeing, with fewer complaints about color migration or blotching compared to competing basics. In automated printing machines, print heads rarely experience blockage, which keeps expensive downtime at bay.

    Paper and pulp users, especially those that operate continuous lines, value the low-foaming characteristics and steady intake rate. We’ve seen production audits where switching from a natural orange dye halved their quality rejections due to uneven coloration, directly improving their output margins. Both synthetic and natural fiber processors confirm less dust generation and smoother integration into their own pre-mixes—a small efficiency, but one that scales up significantly over thousands of tons of production per year.

    Lab users focus less on volume, more on documentation. Consistent batch certificates, transparent impurity breakdowns, and full traceability matter more than just color alone. As researchers use our dye for developing new sensors, tests, or educational material, our QA team supports them with additional technical findings and certification copies drawn right from manufacture.

    Direct Comparisons with Competing Products

    Having manufactured basic dyes both in-house and under contract for outside entities, we evaluate all major market competitors. Some synthetic dyes attempt to match Basic Orange 2’s shade or solubility, but under stress tests—such as rapid heating, varying process water hardness, or repeated freezing and thawing—our product exhibits less degradation, fewer color shifts, and greater powder recovery. Brand-label resellers often blend cheaper base powders, which can introduce unwanted by-products that later show up as defects in client output.

    A handful of producers offer lower-priced substitutes, especially for mass-market textile mills seeking to cut upfront input costs. Buyer audits frequently reveal these alternatives drop color depth after three or four rinse cycles, or leave residues that clog machinery. The slight premium for a clean, directly produced Basic Orange 2 batch brings measurable long-term savings—not just in higher fabric resale values, but also in less unplanned maintenance and fewer customer claims for faults.

    Our advice—shared after years in the sector—is to weigh not just up-front price, but real total process cost. High purity and consistent properties mean fewer mistakes, lower rework, and confidence in each production cycle. Unstable supply, unclear documentation, and lack of traceability introduce avoidable risk. Customers who shift from unreliable third-party supply chains to direct partnership with us routinely see measurable improvement in process stability and final product quality.

    Future of Basic Dyes and Continuous Improvement

    Basic Orange 2 represents the intersection of tradition and ongoing development in synthetic dyes. Market demand for bright, reproducible orange shades persists, even as the world pivots to greener production standards. Our R&D teams experiment continuously with improved synthesis routes to reduce both energy and solvent input. Every incremental upgrade, from filter technology to automated blending controls, transfers benefits directly to clients—shorter lead times, cleaner working environments, and assurance in meeting regulatory changes.

    As more industries scrutinize their chemical inputs, producers must ensure absolute transparency and open data. For us, that means deeper partnerships, regular on-site visits, and fast answers to technical questions. Future buyers—large or small—focus on auditability, supply security, and proof of low impact alongside reliable performance. Our practical approach means we never stop adapting our infrastructure and process to meet this new landscape.

    From the earliest batches to today's output, Basic Orange 2 continues to bridge what manufacturers need with what modern markets—regulatory and consumer—expect. Ongoing improvement, solid relationships, and field-tested knowledge drive this product forward. The result: a dependable, highly visible orange shade, grown from the shared experience of chemical manufacturing and real-world application, delivered from us directly to the world's production lines.

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