Direct Dyes for Paper and Textile: Chemistry, Applications, and How to Source Them Right
- Dhruv Garg
- May 26
- 18 min read
Two industries. One dye class. And more buyer headaches than either should have.
If you manage procurement for a paper mill in Vietnam or a dye house in Bangladesh, you've dealt with it at some point — a shade that was spot-on in the trial run, then drifted noticeably in the third production lot. Or a liquid dye that started separating in the storage drum two weeks after delivery. Or a supplier who was reliable for eighteen months, then started cutting dye strength without telling anyone.
Direct dyes for paper and textile are the most widely used anionic dye class for cellulosic substrates — and they should be simple. The application chemistry is genuinely straightforward compared to reactive or vat systems. But sourcing them well, applying them correctly, and getting consistent results lot after lot requires more precision than the "simple dye" reputation suggests.
This guide covers all of it. The chemistry in plain language, the specific application parameters for paper and cotton, the critical differences between liquid and powder form, and the exact questions to ask before approving a new supplier.
We've been manufacturing and exporting direct dyes from our facility in Ahmedabad, India for over 40 years. What follows is what we've learned from supplying paper mills and textile dye houses across Vietnam, Indonesia, Brazil, Turkey, Bangladesh, Egypt, and India.
Direct dyes are anionic, water-soluble dyes with high natural affinity (substantivity) for cellulosic fibres — cotton, viscose, linen — and for paper pulp. No mordant required.
Available in liquid form (preferred by paper mills for wet-end dosing) and powder form (standard for textile exhaust dyeing).
Paper application: dosed directly into the wet-end system — thick stock, thin stock, or headbox — at controlled ppm levels. Liquid form eliminates dissolution time and pump clogging risk.
Textile application: exhaust dyeing at 90–100°C with salt (NaCl or Na₂SO₄) at 5–40 g/L depending on shade depth. No alkali required for fixation (unlike reactive dyes).
Wash fastness is moderate (Grade 2–3 ISO) without aftertreatment; improves to Grade 3–4 with a cationic fixing agent. Know your end-use requirements before specifying.
Avi Chemicals supplies the Colrect Range of direct dyes — powder and liquid — to paper mills and textile manufacturers worldwide. Free samples available.
The name is both accurate and slightly misleading. Direct dyes bond directly with cellulosic fibres — no mordant, no pre-treatment, no covalent reaction required. But that doesn't mean the bonding is trivial or unstable. It means the chemistry is different from reactive dyes, not weaker in all respects.
Direct dyes are large, planar molecules — most are azo-based (containing the –N=N– group), with some stilbene, phthalocyanine, and disazo structures in the range. Their flat, elongated molecular shape is not accidental. It allows them to lie parallel alongside cellulose chains, maximising the contact area for Van der Waals forces and hydrogen bonding. The more surface contact, the greater the substantivity — which is the technical term for a dye's affinity for its substrate without any fixing agent.
This is why direct dyes exhaust readily onto cotton or paper pulp from a dilute aqueous bath. The dye is drawn from solution onto the substrate through physical and electrostatic interactions. Salt (sodium chloride or sodium sulphate) is added to neutralise the negative surface charge that both cotton and paper pulp develop when wet — this charge would otherwise repel the negatively charged dye anions before they reach the fibre surface.
For your production team, this translates to one practical point: unlike reactive dyes, no soda ash, no alkali, no fixation step is required. That simplifies the process significantly — and reduces the risk of alkali-related shade shifts, particularly important in paper dyeing where pH sensitivity of the pulp system is a constant concern.
The Three SDC Classes — A, B, and C — and What They Mean for Production
The Society of Dyers and Colourists classifies direct dyes into three groups based on their levelling behaviour. This classification is not academic — it determines how you control the dyeing process.
Class A dyes are self-levelling. They have good migration properties and can produce uniform shade even if the electrolyte is added at the start of the bath. Maximum exhaustion is typically reached at 60–80°C. These are the most forgiving dyes to work with and are well suited to shorter dyeing cycles.
Class B dyes are salt-controllable. They have lower migration and must be levelled by controlled, graduated salt addition — not all at once. Add salt too fast and you get uneven strike. These are best added after the bath reaches dyeing temperature, in at least two or three separate additions.
Class C dyes are both salt and temperature-controllable. Their substantivity increases sharply as temperature rises, which means they can produce unlevel results if the temperature ramp is too fast. They require the most careful process control but offer the best shade depth on dark colours — which is why most of the best blacks in the direct dye range fall into this category.
If you're experiencing shade variation or levelness problems and can't isolate the cause, the first thing to check is whether you know which SDC class your current dye belongs to. Your supplier's technical data sheet should tell you. If it doesn't, that's already a problem.
Liquid Direct Dyes for the Paper Industry — The Complete Guide
Why Paper Mills Prefer Liquid Over Powder
Direct dyes account for 41.72% of the paper dyes market, and liquid form commanded 58.11% of the paper dyes market share in 2025 — driven by its ease of application in large-scale paper production.
Those numbers confirm what paper mill technical teams already know from experience. Powder dyes were the industry standard for decades, and some mills still use them. But for anyone running a continuous paper machine — tissue, kraft, or fine paper — liquid dyes have real, measurable operational advantages.
Dissolution is eliminated. With powder dye, you need a mixing tank, hot water, and time. You need to confirm the dye has fully dissolved before dosing, because undissolved particles in the wet-end cause speckle defects on the finished sheet — the kind that triggers a customer complaint or a reel rejection. Liquid direct dyes arrive pre-dissolved, pre-standardised to a known dye content, and ready for metering pump dosing immediately.
Precision dosing becomes easier. A peristaltic or diaphragm metering pump can dose liquid dye at consistent ppm levels directly into the thick stock, thin stock, or headbox — wherever your system is designed for addition. You're controlling colour by pump rate, which is far more repeatable than manual powder weighing by an operator on a night shift.
Storage and handling hazard is reduced. Direct dye powders are fine particles with inhalation risk. They can cake in humid storage conditions, changing the effective dye content per kg weighed. Liquid drums are sealed, stable, and require no dissolution infrastructure on-site.
One important note on storage stability: good liquid direct dye formulations are engineered with solubility improvers (typically alkylamines or urea) to maintain stability across temperature fluctuations in storage. During temperature swings, both low and high temperatures can lead to precipitates which can be critical for metering pumps and cause specks or nonuniform colouration on paper. When you're evaluating a liquid dye supplier, ask specifically about storage stability data — particularly at 5°C and 40°C. Any credible manufacturer can show you this.
Wet-End Addition — How Dosing Works in Practice
If you're running a paper machine and considering liquid direct dyes for the first time, or if you're troubleshooting shade inconsistency in your current setup, here's how wet-end addition actually works.
The addition point matters. Most paper mills add dye to the thick stock (after the stuff box but before the fan pump) or to the thin stock (after dilution, before the headbox). Headbox addition gives the fastest response to colour corrections but less mixing time. Thick stock addition gives better dye distribution through the sheet but a longer lag time between recipe change and visible result on the reel. For tissue and lightweight papers, thin stock or headbox addition is generally preferred. For heavier kraft and board, thick stock dosing works well.
Dosage rates vary enormously by shade depth and paper type. For pale tints on tissue, you might be dosing at 0.05–0.5% dye on weight of fibre. For a deep-coloured kraft or kraft liner, dosage can reach 1.5–3% on fibre weight. Your specific dosage depends on your dye's strength, your target shade CIELAB values, your machine speed, and your drainage retention system.
pH of the wet-end affects direct dye exhaustion on fibre. Most direct dyes perform best at slightly alkaline to neutral pH (6.5–8.5). At low pH, some dyes precipitate. In alkaline conditions above pH 9, exhaustion onto the paper fibres increases but can shift the shade noticeably. If your wet-end pH is variable — which it often is when using recycled fibre — expect your shade to move with it. This is why lot-to-lot consistency in dye strength matters so much: if the dye concentration in the drum varies between batches, and your wet-end pH is also varying, shade control becomes nearly impossible.
Retention aids interact with dye. Cationic retention aids (PAM, polyDADMAC) increase dye fixation to fibre — useful for deeper shades with less dye. But cationic chemistry and anionic dye can also cause premature flocculation if dosed too close together in the system. Keep your dye addition point at a minimum distance from cationic retention aid dosing points. Your supplier's technical team should know this and be able to advise on the sequence.
Tissue, Kraft, Office, and Specialty Paper — Different Applications, Different Requirements
Not all paper is the same substrate, and the direct dye that works brilliantly for coloured tissue will not necessarily perform the same way on kraft liner or fine writing paper.
Tissue paper: Low basis weight, high softness, rapid drainage. For coloured tissue — facial tissue, napkins, coloured toilet tissue — you need a dye with very high substantivity at low ppm dosage levels, fast drainage compatibility, and good wet strength resistance. Light, pastel shades dominate this segment. Direct Yellow, Direct Pink, and Direct Blue grades are heavily used. Shade migration between the Fourdrinier wire and the press section can be a problem with low- substantivity grades — choose Class B or Class C dyes rather than fast-striking Class A for tissue applications.
Kraft paper and packaging board: Darker shades, heavier basis weight, usually recycled-fibre furnish. The recycled fibre brings variable cationic demand, which affects dye retention unpredictably. Direct Black 22, Direct Brown 44, and Direct Brown 210 are workhorses in this segment. For black kraft — used in specialty packaging, luxury bags, and industrial wrapping — Direct Black 80 and Direct Black 155 give deep, neutral black shades with good retention on recycled fibre.
Office and fine paper: Whiteness and brightness are everything in this category. The primary application for direct dyes here is blue tinting — adding a trace of blue to push the paper's visual whiteness above its actual whiteness. This is done at very low dosage (1–10 ppm on fibre). Direct Blue 201 and Direct Blue 86 are used for this application. Shade consistency from reel to reel is the critical performance metric — if your tint blue shifts even 0.5 ΔE between reels, your customer will notice it when stacking paper.
Specialty and decorative paper: Gift wrap, coloured art paper, coloured board for packaging. Full-shade colours, custom shade matching required. This is where the breadth of a supplier's range — and their shade development capability — becomes the deciding factor.
What Can Go Wrong in Paper Dyeing — and How to Avoid It
Shade variation between reels is the most common complaint. The root causes are almost always one of three things: dye strength variation between batches (supplier quality problem), wet-end pH drift (process problem), or inconsistent filler/retention chemistry (furnish problem). Isolate which one by running a controlled trial — fixed pH, fixed retention chemistry and changing only the dye batch. If shade holds steady, the problem is upstream of the dye.
Speckle defects on the sheet usually mean undissolved dye particles (if you're using powder dye) or precipitation in the liquid dye storage or dosing line. Check your storage tank temperature. Check your dosing line for dead-legs where the dye can concentrate and precipitate overnight.
Foam problems at the headbox can be dye-related if the dye formulation contains surfactants that interact with your wet-end chemistry. Ask your supplier for the formulation profile and check it against your existing chemistry package.
Avi Chemicals supplies liquid direct dyes specifically formulated for paper machine wet-end dosing — tissue, kraft, office paper, and specialty grades. Available in the full colour spectrum. Free samples and technical consultation available.
📞 +91 88660 13200 | +91 88660 16200
Direct dyes remain the most cost-effective dyeing option for cotton applications where wash fastness requirements are Grade 3 or below — lining fabrics, furnishing fabrics, jute products, packaging material, and certain export markets where the end-use laundering frequency is limited.
Exhaust Dyeing on Jigger and Overflow Machines
The exhaust process for direct dyes on cotton is simpler than reactive dyeing, with fewer critical steps. The absence of alkali removes one major variable from the equation.
Standard exhaust procedure:
Dissolve dye in a small quantity of hot water (90–100°C) to form a lump-free paste, then dilute with warm water. Add 0.5–1 g/L sodium carbonate if the dye has limited solubility at your water hardness.
Set the bath at 40°C. Enter the fabric. Run for 10–15 minutes.
Begin salt addition. Use sodium chloride or Glauber's salt (Na₂SO₄) in graduated additions over 20–30 minutes: — Light shades (< 0.5% depth): 5 g/L — Medium shades (1–2% depth): 10–20 g/L — Heavy shades (> 2% depth): 20–40 g/L
Raise temperature to 90–95°C at 1–2°C per minute. Run at temperature for 45–60 minutes.
Cool to 60°C. Rinse. If wash fastness aftertreatment is required, apply cationic fixative at this stage before final rinse.
The liquor ratio is typically 1:20 to 1:40 for exhaust processes — higher than reactive dyeing. Lower liquor ratios improve exhaustion but require closer control of levelness.
For jigger dyeing of woven fabrics, the same temperature and salt parameters apply. Jigger tension must be controlled carefully on lightweight woven constructions to avoid selvedge-to-centre shade differences caused by tension-induced differential dye uptake.
Continuous and Pad-Steam Dyeing
For high-volume fabric production, continuous processes offer better throughput and lower water and steam consumption per metre.
In the pad-steam process, the fabric is padded in a solution of dye and salt (no alkali), then passed through a steamer at 100–105°C. Steam time is typically 30–60 seconds, which is sufficient for most Class B direct dyes. Class C dyes may require longer steam dwell or higher wet pick-up to achieve adequate exhaustion.
The critical parameter to control in continuous dyeing is the tailing tendency — the shade change between the front and back of a long run caused by dye concentration changing in the trough as fabric absorbs dye. Choose Class B dyes for continuous work rather than Class C. Use small padding troughs fed at a constant level, run at maximum production speed, and monitor the trough dye concentration with an in-line spectrophotometer if shade precision is critical.
Improving Wash Fastness with Cationic Fixing Agents
Direct dyes have a deserved reputation for moderate wash fastness — typically ISO 105-C06 Grade 2–3. For applications requiring Grade 3–4, an aftertreatment with a cationic fixing agent (a resinous cyanamide derivative or a quaternary ammonium compound) is standard practice.
The fixing agent works by forming a large, low-solubility complex with the dye on the fibre surface, physically preventing the dye from migrating into wash water. The result is typically a 0.5–1.0 grade improvement in wash fastness.
The downside: some cationic fixatives cause a slight shade dulling or shift. Test your fixative on your specific dye-shade combination before approving it for production. Some direct blacks, in particular, shift noticeably to a cooler, greener tone after cationic treatment — which may or may not be acceptable depending on your shade standard.
Direct Black Dyes — The Most Requested Shade Category
Black is the highest-volume shade in both the textile and paper direct dye markets. It is also the shade with the most complexity, because "black" covers a range of undertones — warm black, cool black, blue-black, greenish black — and buyers often don't specify until they're looking at a strike-off under different light sources.
Direct Black 22 (VSF): The benchmark black for both paper and textile applications. Gives a neutral to slightly bluish black. Excellent solubility, good exhaustion on cotton, widely used in kraft paper dyeing. High substantivity makes it suitable for deep shade cotton dyeing without excessive salt dosage.
Direct Black 80 (OB): A warmer black with a slight brownish tone compared to DB 22. Often used in paper applications where a kraft-brown undertone is acceptable or desirable. Good retention on recycled fibre.
Direct Black 155 (BF): A cool, blue-black with excellent brightness. Preferred for cotton textile applications where a deep, visually striking black is required. More sensitive to metamerism under different light sources — always specify light source when approving a shade.
Direct Black 19 (G): A greener-undertone black, used in specific paper toning applications and for cotton fabrics where a cool, grey-black final shade is the target. Good migration properties in the exhaust process — a Class A or B classification in most suppliers' ranges.
If you're currently working with a black and experiencing metamerism problems — the shade looks different under daylight versus office fluorescent versus LED — the solution is almost always to switch to a dye with a different chromophore structure, not to adjust the recipe. This is a shade development conversation, not a process problem.
Achieving True Black on Paper vs Cotton
On cotton, black is achieved by a single dye (any of the above) or by a blend of blue, red-brown, and yellow direct dyes combined to produce a neutral black with better light fastness than a single-dye black. The blended approach is more expensive to manage but produces more visually stable blacks under varied lighting conditions.
On paper, direct blacks perform best on bleached chemical pulp. On recycled fibre with high ash content, the effective shade depth is lower — you need higher dosage to compensate. Tissue black is particularly challenging: the extremely low basis weight means any shade variation across the width of the sheet is immediately visible. For tissue black, liquid Direct Black 22 dosed into the headbox with tight pump rate control is the standard approach in most Asian mills.
Direct Dyes vs Reactive Dyes for Cotton — When Each Makes Sense
This is the comparison question we get asked most often — and it's the right question to be asking. The answer isn't "reactive dyes are better." It depends entirely on what you're making, for which market, at what price point.
Side-by-Side Comparison
Parameter | ||
Wash fastness | Grade 2–3 (Grade 3–4 | Grade 4–5 |
with cationic fixative) | ||
Light fastness | Grade 3–4 | Grade 3–5 (varies) |
Application temp | 90–100°C | 60–80°C (hot brand) |
Alkali required | No | Yes (soda ash) |
Salt required | 5–40 g/L | 20–80 g/L |
Process complexity | Low | Medium–High |
Cost per kg | Lower | Higher |
Suitable for | Lining, packaging, | Garments, home textiles, |
furnishing, paper | exports to EU/US brands | |
Effluent load | Lower (no alkali) | Higher (alkali + salt) |
The Real-World Decision Framework
Choose direct dyes when:
Your buyer does not specify a minimum wash fastness above Grade 3
Your application is paper, jute, or packaging
You want a simpler process with fewer fixation steps
Your order is for lining fabric, economical furnishing, or industrial fabric where cost matters more than premium fastness
You are in a market where cationic fixative aftertreatment is routinely used and accepted.
Your buyer specifies ISO 105-C06 Grade 4 minimum (EU brands, US brands, GOTS-certified supply chains)
You are dyeing garment fabric that will be washed 20+ times in consumer use
You need the brightest, cleanest turquoise, red, or yellow shades
reactive dyes have superior colour gamut in these hues
Your compliance documentation requires OEKO-TEX Standard 100 wash fastness compliance
For many mills in Bangladesh, Pakistan, and Egypt supplying mid-market garment exporters, the practical answer is: use reactive dyes for export-spec fabric and direct dyes for domestic or economy grade orders. The process knowledge and equipment are largely shared — the difference is the dye class and the omission of the alkali fixation step.
How to Evaluate a Direct Dye Supplier Before You Commit
Here's the reality of supplier evaluation that most people don't say out loud: you are not just buying dye. You are buying someone's quality consistency for the next 12–24 months. One bad batch in month 7 — a dye that is 8% weaker than the CoA says, or a liquid dye that precipitates in December when your storage room drops below 10°C — costs you far more than any discount you negotiated on the initial order.
The Six Questions That Separate Manufacturers from Traders
If you're currently comparing 5 suppliers and trying to decide who gets the business, ask each of them these six questions. The answers tell you everything.
1. Do you manufacture the dye or are you a trader?
This matters because traders buy from multiple manufacturers — and cannot guarantee the dye chemistry is consistent between lots. Manufacturers control their own production. Ask for a factory address and look it up. Ahmedabad's GIDC Vatva is one of the world's major dye manufacturing zones — many credible manufacturers operate there, and so do traders who claim to be manufacturers.
2. Can you supply a Certificate of Analysis for every lot?
The CoA should show: dye content percentage, shade match to standard (ΔE value on spectrophotometer), solubility, and pH of the dye solution. If they cannot supply this consistently, move on.
3. What is your lot-to-lot strength tolerance?
The industry standard is ±2–3%. Above ±5% variation in dye strength, and you will see visible shade differences in bulk dyeing even with an "identical" recipe.
4. For liquid dyes — what is your storage stability range?
Ask for the temperature range over which the product remains stable without precipitation. Any manufacturer who cannot answer this immediately does not have proper formulation quality control.
5. Can you supply REACH compliance or OEKO-TEX documentation?
If you supply European brands or their supply chain, your input chemicals will be audited. A dye supplier who cannot produce restricted substance compliance data is a liability to your customer relationships.
6. Can you develop a custom shade from my sample?
This tells you whether they have a working laboratory with a spectrophotometer and experienced colorists. If the answer is "yes, send us the sample and we'll develop a lab dip within 5 working days," that's a manufacturer. If the answer is "we'll check with our supplier," that's a trader.
Why Lot-to-Lot Consistency Matters More Than Price Per Kg
The cheapest direct dye is never the cheapest dye. If a supplier charges ₹5/kg less but delivers dye at ±7% strength variation, and you're adjusting recipes manually on every new lot, the labour cost and rework cost exceeds the price saving by a significant margin.
We've had buyers come to Avi Chemicals specifically because their previous supplier — cheaper by ₹8–12/kg — was causing one batch rejection per month on average. One rejection per month in a 5,000- metre/day dye house is an enormous cost that never shows up in the purchase price comparison.
At Avi Chemicals, every batch of the Colrect Direct Dye Range is tested in our in-house laboratory before dispatch. Strength must be within ±2% of the standard. Shade match must be within ΔE 0.8. Solubility and pH are confirmed per lot. These are not marketing claims — they are documented in the CoA that ships with every order.
Frequently Asked Questions — Direct Dyes
What are direct dyes used for?
Direct dyes are primarily used for colouring cellulosic materials — cotton, viscose, linen, jute, and paper — without a mordant or separate fixing agent. In the textile industry, they are applied to cotton fabric and yarn where a cost-effective dyeing process and moderate wash fastness are acceptable, such as lining fabrics, furnishing textiles, and economy apparel. In the paper industry, they are the dominant dye class for colouring tissue, kraft, office, and specialty papers. They are applied in the wet-end of the paper machine — directly into the pulp slurry before sheet formation.
What is the difference between direct dyes and reactive dyes for cotton?
The fundamental difference is the bonding mechanism. Reactive dyes form a covalent chemical bond with cotton cellulose under alkaline conditions — this bond is permanent and delivers wash fastness of Grade 4–5. Direct dyes bond through hydrogen bonding and Van der Waals forces — less permanent, producing wash fastness of Grade 2–3 without aftertreatment. As a result, reactive dyes are preferred for garments and any application requiring repeated washing, while direct dyes are chosen for economy applications, paper, and products where wash fastness Grade 3 (with cationic fixative) is sufficient. Direct dyes also require a simpler process — no alkali fixation step — and are lower in cost per kg.
Can direct dyes be used for paper manufacturing?
Yes — direct dyes are the most widely used dye class in paper manufacturing. The direct dyes segment accounted for 41.72% of the paper dyes market in 2025, driven by cost-effectiveness and versatility. They are used for tissue paper, kraft and packaging paper, fine paper and office paper, specialty and decorative papers. In paper manufacturing, direct dyes are added to the wet-end of the paper machine — dosed as a liquid into the thick stock, thin stock, or headbox. The dye is retained on the cellulose fibres of the paper pulp through its natural substantivity — the same mechanism as in textile dyeing — without requiring any fixing agent.
What is liquid dye for paper and how is it applied?
Liquid direct dye for paper is a pre-dissolved, stabilised aqueous formulation of direct dye at a known dye content — typically 10–25% dye by weight. It is designed for direct metering pump dosing into the paper machine wet-end system without any on-site dissolution step. Application is controlled by pump rate, allowing precise ppm dosage to the pulp slurry. The advantage over powder dye is elimination of dissolution time, reduced speckle defect risk, and more consistent ppm dosing. Storage stability across temperature variation (5–40°C) is an important specification — always request this data from your liquid dye supplier.
Which direct dyes are best for dark shades on cotton?
For dark shades on cotton, Direct Black grades (22, 80, 155, and 19) are the most commonly used. Direct Black 22 gives a neutral black with good solubility and exhaustion; Direct Black 155 gives a cooler blue- black preferred for fashion applications; Direct Black 80 gives a warmer black with slight brown undertone. For very deep, durable blacks where wash fastness aftertreatment will be applied, a combination of a black direct dye with a cationic fixing agent is standard practice. For cotton applications requiring wash fastness above Grade 3, consider switching to reactive dyes — particularly for black, which is the most commercially important shade in export garment markets.
How do I choose a reliable direct dye supplier for bulk orders?
Evaluate suppliers on six criteria: manufacturer vs trader status (manufacturers offer more consistency); Certificate of Analysis with every lot (dye strength ±2%, shade match ΔE < 0.8); lot-to-lot strength consistency; storage stability data for liquid grades; compliance documentation (REACH, OEKO-TEX); and custom shade development capability. Price per kg is the least predictive indicator of total cost — dye strength variation and batch rejections from an unreliable supplier will cost more in rework than any price saving. Request free samples and run a production trial before committing to a new supplier. Any credible manufacturer will welcome this.
We manufacture and export direct dyes from our facility at GIDC Vatva, Ahmedabad — one of India's largest dye manufacturing zones. The Colrect Range covers:
For paper mills:
✓ Liquid direct dyes for wet-end dosing — tissue, kraft, office paper, specialty papers
✓ Full colour spectrum including Direct Black 22, 155, 80, 19; Direct Brown 44, 210; Direct Green 114, 96; Direct Blue 201 and more
✓ Formulated for pump dosing stability across 5–40°C storage range
For textile dye houses:
✓ Powder direct dyes for exhaust, jigger, and continuous dyeing of cotton, viscose, linen, and blends
✓ Complete shade range — black, brown, blue, green, and blends
✓ Technical data sheets with SDC class, exhaustion parameters, and fastness data
What every order includes:
✓ Certificate of Analysis — dye strength, shade match ΔE, solubility
✓ Safety Data Sheet (SDS / MSDS)
✓ REACH compliance declaration available on request
Free samples available for trial before commitment. We respond to all enquiries within 24 hours.
📞 +91 88660 13200 | +91 88660 16200
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