West Ujimqin Banner, Xilingol League, Inner Mongolia, China sales9@alchemist-chem.com 1531585804@qq.com
Follow us:



New Red: Origins, Properties, Applications, and Prospects

History and Development

New Red didn’t pop up overnight. Its roots stretch back through the evolution of synthetic dyes. Early chemists wanted something brighter, more stable, and less toxic than the old batch of azo reds or natural dyes. By the late 20th century, the demands from the textile, plastics, and coatings worlds pushed researchers to fine-tune both the chemical backbone and the production process. As industrial standards got tighter and consumer health concerns started getting more attention, New Red became known for blending performance with higher safety margins. Today’s formulations are the result of decades of this push-pull between color quality, durability, and safety.

Product Overview

This pigment stands out for its strong chroma and stability across many uses. Labs and factories rely on New Red for its punchy hue and resistance to fading. Granular powders and dispersions circulate through everything from automotive paints to cosmetics. Customers see fewer surprises on their end—color matches batch after batch, with minimal drift or quality drop-off. Producers shave down waste, lower rejects, and can pivot between applications more easily since the pigment works across a bunch of mediums.

Physical and Chemical Properties

New Red sits toward the warmer end of the color map, with high tinctorial strength and opacity that handles direct sun or industrial stress well. The stuff shows solid thermal stability, shrugging off temperatures where earlier reds might start to brown or degrade. Chemical resistance remains strong, so New Red won’t bleed or fade fast in the presence of light acids, bases, or everyday solvents. Fine particle size boosts absorption and dispersion, helping processors get smooth, even coloration in their end products. Some manufacturers tweak the crystal form of New Red to get even tighter shade control.

Technical Specifications and Labeling

Manufacturers document precise shade codes, reflectance curves, and CI (Color Index) numbers with each batch. Moisture content, particle size range, and purity—down to trace elements—appear in the paperwork. Regulations push producers to print out full compositional details, including carrier resins or additives. Those on the receiving end want guaranteed shade consistency and performance, so spec sheets run deep, from pH tolerance to weathering resistance and migration profiles. Good producers stay transparent on all hazardous ingredient identifiers, driving trust with industrial clients and regulators.

Preparation Method

The main route today revolves around controlled coupling reactions under set pH conditions, mixing starting components like diazonium salts and aromatic amines. Operators use carefully calibrated vessels—agitation, temperature, and timing all play a role in getting the target molecular structure without side reactions. Each stage, from reaction to filtration, washing, and drying, shapes the final product’s stability and shade. Some plants add coating steps or surface treatments to boost compatibility with plastics or resins, or to reduce dust hazards. Process water runs through clean-up cycles so the environmental footprint stays reasonable.

Chemical Reactions and Modifications

Tuning New Red often means tinkering with side groups on the aromatic rings, or swapping in different coupling partners to shape solubility or color shade. Post-synthesis treatments—like sulfonation or metal chelation—change how the pigment locks into a matrix, or how it holds up in harsh conditions. New Red can handle high-shear dispersions, and researchers keep pushing boundaries by linking polymer chains directly to the pigment for special uses in inks and engineered composites. The goal is a stable, adaptable pigment without losing that signature shade.

Synonyms and Product Names

You’ll come across New Red under several aliases in markets and safety datasheets. Look for CI Pigment Red 170, PR170, Napthol Red, or names like Fast Red F2R from various producers. Each variant stretches the concept a bit, but most stick to the core chemistry and performance markers. Trade names help buyers match suppliers across regions, though performance tweaks depend on the manufacturer.

Safety and Operational Standards

Modern safety sheets put a spotlight on dust control, eye protection, and proper ventilation. Producers design New Red to sidestep legacy concerns from older azo reds—cutting down on aromatic amine release during use or disposal. Workers get regular training on safe handling, glove use, and spill containment. Facilities keep clear labeling on drums and containers. Industry aligns with REACH and other regional standards, so companies work to keep migration and bioaccumulation risks low, and to document compliance up and down the supply chain.

Applications

New Red shows up everywhere: mass-produced plastics, high-end auto coatings, architectural finishes, artist paints, and cosmetic lines. In plastic injection molding, its heat resistance prevents color loss. Automotive painters use it for body finishes that last through sun, storm, and salt without yellowing. Printing ink makers blend it for packaging where shade accuracy and low migration matter for food safety. Personal care brands lean on it for bold, lasting shades in lipsticks and blush, trusting the rigorous safety checks behind the pigment. Even high-tech coatings and engineered materials see New Red as a way to balance performance, cost, and compliance.

Research and Development

Labs keep working the edges—fine-tuning particle coatings, exploring alternatives to heavy metals in formulations, and boosting fastness ratings in tough end uses. Researchers seek improved dispersibility without extra surfactants. Chemists in green chemistry projects look for bio-based tweaks to conventional synthesis routes, hoping to lower carbon footprint and cut manufacturing waste. Universities and industry consortia dig into pigment-matrix interactions to unlock new uses in 3D printing and smart packaging. As sustainability becomes more than a buzzword, R&D teams keep chemistries transparent and scalable.

Toxicity Research

Over the past decade, New Red has faced close scrutiny from regulators and independent labs. Chronic exposure, bioaccumulation, and metabolite formation during use and disposal all come under review. Most versions avoid banned precursors and break down with lower risk than older reds that used hazardous aromatic amines or volatile carriers. Aquatic toxicity stays front-of-mind, especially in wastewater-rich industries. Ongoing studies monitor the impact of pigment dust and nanoparticles. Producers run in vitro and in vivo tests to satisfy regulatory bodies in Europe, North America, and Asia, aiming to keep the dossier both current and robust as the science moves forward.

Future Prospects

As the world pushes for lower-impact, safer chemicals in manufacturing, New Red stands to evolve in both chemistry and application. Producers focus on waste reduction, closed-loop processes, and energy-saving synthesis. High-performance reds tuned for recyclability in plastics and coatings may rise as extended producer responsibility reshapes entire supply chains. Expect new hybrids—maybe blending organic and inorganic elements or integrating green chemistry breakthroughs—to chase both performance and safety demands. As regulations and consumer expectations climb, pigment makers will have to prove every claim with data, traceability, and full lifecycle analysis.




What is the New Red product used for?

Everyday Uses That Stand Out

Most of us notice products that come in bright packages and eye-catching colors, and the New Red product is no exception. Unlike the many hyped-up releases that fade within weeks, this new entry grabs attention for its real, practical uses. It's not trying to reinvent the wheel. It just handles everyday problems in a smart and simple way. I first came across this product on a shelf at the local pharmacy—red packaging always jumps out, but the function is what kept my interest. Turns out, it's built primarily for wound care. Not just the quick bandage you throw on a paper cut, but something that works for scrapes, burns, and minor injuries that need a solid protective layer.

Why People Reach for It

Treating cuts and abrasions at home hasn’t changed much in years, so anything that keeps the process easy matters to families. The New Red product stands out with a formula designed to clean and shield wounds. I have kids, and I know that bandages can fall off, ointments rub away, and little injuries turn into bigger deals. This product actually sticks, keeps dirt out, and speeds up healing for both kids and adults. Forget having to reapply something every hour—this lasts through the playground or while you’re working around the house.

Why This Matters for Health

Infections start with something small. That scrape you ignore can snag bacteria from a countertop, sidewalk or gym floor. According to the Centers for Disease Control and Prevention, millions of people deal with wound infections every year, and most cases come from tiny injuries handled at home. Function matters more than flashy advertising here. Real people want products that give results they can see. The New Red product hooks into that demand by being easy to use, with clear instructions and ingredients backed by medical research. There's science in play, not just fancy colors: the main compound in the formula has shown proven results in clinical studies, reducing risks of infection and promoting faster healing.

Practical Solutions Still Have a Place

Some products seem more complicated than the problem they solve. I’ve bought sprays that sting and dressings that barely stick. It gets frustrating for parents, seniors, anyone dealing with regular skin injuries or sensitive skin. This product wins points by skipping unnecessary extras. No mystery fragrances, no over-promises on the label, and no messing around with multiple steps. You clean the wound, apply the product, and get back to regular life.

Improving Everyday Health, Not Just Fixing Problems

Many consumers want more control over their own health—greater trust in what's going on their skin, fewer visits to the doctor for routine cuts and scrapes. The New Red product speaks to a growing interest in home care that does not sacrifice safety for convenience. According to recent pharmacy sales data, household wound care products have seen steady growth during the past two years—a sign people want to manage small injuries at home. That saves time, money, and stress, especially with rising medical costs and crowded urgent care clinics.

What Comes Next?

People stay loyal to products that prove themselves over time, and this one brings immediate results without a steep learning curve. Improvements will likely come in packaging and expanded uses, but the core focus—making basic wound care easy and reliable—fills a genuine need. As someone who has seen plenty of family emergencies, both big and small, I can say that the simplest solutions are almost always the most valuable. Most households need products like this, and the New Red product fills that everyday role better than most.

What are the main features of New Red?

What Makes New Red Stand Out

New Red isn’t just another pigment. Over the past few months, I’ve watched people in design and manufacturing wake up to what it brings to the table. Walk down an aisle of products, and you’ll notice a bold, sharp color that just won’t fade into the background. That’s New Red. A lot of its strength comes from stability. Traditional reds often lose their punch because of sunlight, heat, or chemicals. New Red holds on to its color long after others have dulled out. This isn’t just handy for clothing or packaging; it also makes a big difference for everything from cars to electronics—anywhere color counts.

Real-World Durability

Good color shouldn’t mean higher risk. New Red takes everyday bumps and scrapes better than much of its competition. In my own shop, all kinds of plastics get tossed around. We’ve seen New Red stick it out through UV exposure, rough handling, cleaning chemicals, and temperature swings. This sort of toughness saves time and money because parts look new longer and don’t need replacing or repainting as soon. Brands looking to avoid costly callbacks or complaints benefit from this kind of reliability.

Health and Environment

A lot of coloring agents get a bad rap for being tough on human health or on the environment. New Red tries to change that. Every safety data sheet points to formulas designed with modern regulations in mind. It avoids harmful heavy metals—think lead or cadmium. If you’ve ever had to test toys or food packaging, you know how important that is for peace of mind. This pigment holds up under stringent European and North American safety standards, and meeting those standards always means fewer headaches down the road.

Consistency Across Materials

I’ve spent enough time troubleshooting batch variations to appreciate a pigment that doesn't change its tune. New Red delivers the same crisp look whether it goes into plastics, textiles, coatings, or inks. Once we color-match with a supplier, we know the next job will match too. For brand designers and quality assurance teams, this is worth its weight in gold. Companies can roll out new product lines or campaign displays without hassle, sure the color’s right.

Compatibility and Processing

The factories I work with often run fast and lean. Long setups or troubleshooting just eat into margins. New Red blends well during manufacturing, whether it goes into injection molding, extrusion, or screen printing. It disperses quickly, doesn’t clump, and plays nicely with other additives. This means fewer stoppages, less waste, and faster cycles. Anyone who’s run a tight production floor knows that kind of efficiency pays off fast.

The Bottom Line

People underestimate how much work goes into picking the right colorant. New Red brings deep shade, lasting performance, regulatory confidence, and easy use. Talking with product teams, these are the features people mention most. In a world packed with options, the ones that solve old problems while clearing new hurdles tend to stick around. That’s why New Red keeps turning heads wherever it pops up.

Is New Red compatible with other products?

Compatibility Gaps Stir Up Real Questions

New Red keeps popping up in lab supply rooms and industry warehouses. Companies working in food manufacturing or cosmetics notice this pigment in more recipes. New Red’s bright shade covers a lot of ground, and brands hope to swap it into formulas without a hitch. It helps to look at the everyday questions people ask. Here, experience in working with new materials tells me things aren’t always as plug-and-play as product reps hope.

Why Mixing Dyes Causes Headaches

I remember long hours in a product testing lab, watching operators try to add a fresh pigment to a batch they’d worked with for years. Old dyes bring habits and expectations. Folks expect the new color will blend, behave, and last the same way. But that expectation falls apart if New Red reacts differently with stabilizers, preservatives, or other ingredients. From splitting in the tank to fading on shelves, color incompatibility has real costs. If a chef notices a sauce turning muddy, or a lotion starts separating, the brand’s on the hook for recalls, complaints, and costly reformulations.

Ingredients Love Familiar Faces

Emulsifiers, thickeners, and flavors often grew up together in the same formulas. Introduce something new, like New Red, and they don’t always get along. I’ve seen gums clump, fats curdle, and colors start to bleed as soon as one ingredient changes out. Stability problems don’t just annoy technical staff; they cause visible and measurable changes. For food producers, a bright candy that turns dull on the warehouse shelf hits the bottom line. In personal care, odd clumping raises both aesthetic and safety questions with regulators and customers.

Allergies and Label Reform

One of the toughest experiences I ever had in product development came when ingredient swaps triggered a string of allergy complaints. New Red doesn’t hide – its chemical makeup needs a fresh review by food safety authorities in many countries. If a formula previously said “artificial color,” a patchwork of new label laws mean you have to be specific. Every ingredient change brings the risk of cross-contact, mislabeling, and confusing consumers. In the food and beauty world, trust takes years to build and only one bad experience to lose.

Working Toward Smarter Blends

Product compatibility rarely follows a formula. Cross-testing in controlled batches shows how New Red stands up in a blend, under heat, or exposed to light. Some labs lean on accelerated shelf-life testing. Others lean on computer simulations to predict problems before production ramps up. My own best lessons came from shadowing production lines at odd hours, watching for tiny shifts that pointed to bigger problems down the road. Smart operators know that no dye, pigment, or new additive goes it alone.

Moving From Hype to Proof

Just because New Red touts eco-friendly production or vivid color doesn’t mean it matches perfectly with legacy products. Manufacturers demand ingredient suppliers deliver detailed safety documentation and proven track records. Supply chain transparency, traceability, and documented compatibility testing matter more than glossy marketing sheets. The lessons of recalls, regulatory fines, and public backlash hang over every ingredient swap. Anyone looking to bring in New Red should get skeptical, get evidence, and get some hands-on trial under real-world conditions before betting the brand on a new color’s promise.

How much does New Red cost?

Pricing New Red: Scratching Beneath the Surface

Walking through store aisles, the excitement of seeing something labeled “New Red” pulls me in every single time. It could be a sweater, a car model, or even a tech device. The color promises something bold, something fresh, and often, a bump in the price tag. For years, I’ve noticed this with products that get a fresh paint job or branding twist—marketers know how to play with the allure of difference, and they’re not shy about charging more for it.

This isn’t just about a splash of pigment. Take consumer electronics—companies spend millions crafting “limited edition” versions of phones in new hues. The iPhone, for example, rolled out its own vivid red variant more than once. That variant almost always launches at the same retail price as its standard siblings. Even so, resale shops later list it for a premium, sometimes hundreds higher, banking on scarcity and consumer appetite for novelty. That’s a lesson from behavioral economics: perceived uniqueness jacks up perceived value.

Fashion brands do the same. Last spring, I spotted sneakers in “New Red.” They cost more than other colorways from the very start, justified by talk of exclusive dyes and collab hype. It didn’t matter that the same materials and silhouette existed in blue or black. It’s about signaling. Folks want to claim they got the new color first, and brands cash in.

In food, food-grade reds—think Red 40 or carmine—have prices dictated by industry regulation and ingredient sourcing. Natural reds fluctuate in cost. Scarcity plays a role if beet extract or cochineal bugs are in short supply. Synthetic food dyes cost less, but growing concern about health effects has nudged some companies to switch to pricier alternatives. These switches can nudge prices up at the checkout lane.

The Real Cost: Beyond Just Price Tags

It’s not just about what you pay upfront. Red pigments, whether for paint, plastics, cars, or cosmetics, come with a hidden ecologic price. Some synthetic reds take a heavy toll—wastewater from dye factories can pollute rivers unless companies invest in cleaner operations. Countries with stricter environmental laws pass added production costs back to consumers. Several years ago, I compared car paint prices overseas and saw reds on certain models ticking higher where those eco-rules hit hardest.

People often forget the labor behind each new shade. Research chemists, textile designers, even marketing teams—everyone gets a slice, and all those salaries nest in the sticker price. Getting a fresh, bold red that stays fade-resistant in sunlight doesn’t just fall from the sky. Every improvement—longer-lasting tones, better safety profiles—means someone invested resources. Those costs don’t just vanish.

Transparency and Smarter Shopping

Many of us want to understand why we’re paying extra for the latest look or color. Brands owe it to shoppers to say where the money goes. Right now, few do. Detailed breakdowns could help rebuild trust. Third-party watchdogs and consumer groups, like Consumer Reports or Environmental Working Group, check if higher prices really buy safer, more sustainable dyes.

I’ve started checking ingredients lists and paint codes before buying. I also try to support companies open about their supply chains. If more shoppers demanded these details, producers would have little choice but to get transparent. Pricing “New Red” fairly means covering real costs and environmental responsibility, not just marketing hype.

Where can I buy New Red?

Tracking Down New Red: What to Know

Ask anyone who's searched for a specialty pigment or dye and they’ll tell you it can get tricky. New Red, the sort of color that stops you in your tracks, isn’t usually sitting on supermarket shelves. People often hunt for it for art, crafts, textiles, or even research. So, where do you even start looking?

Online Shops Have Changed the Game

I remember the days of crisscrossing town, checking art supply shops and sometimes leaving empty-handed. Now, online retailers step in as the main players. Stores like Dick Blick and Jerry’s Artarama pop up right away in searches for artist colors. These places usually carry a rich selection of modern synthetic reds, sometimes listed by name, pigment code, or both. For those focused on performance and reliability, larger suppliers often display detailed product information, safety data, and, if you’re lucky, customer reviews.

Some stores stay focused on professionals and researchers. Fisher Scientific and Sigma-Aldrich, heavyweights in the chemical supply world, offer New Red for technical work or industry use. Honest disclosure—most folks won’t need these, and prices tend to run steep, but you get transparency and clear quality control. University labs, textile artists working with dye baths, and product developers in cosmetics turn to these sources because safety and documentation matter.

Look Beyond Mainstream Sources

Community and independent shops sometimes set themselves apart by stocking rare or hard-to-find colors. Certain specialty textile dye stores, for example, feature experimental colors that haven’t been adopted by the major brands. These smaller businesses thrive on word-of-mouth and have loyal customer bases because they advise on things like colorfastness, how a dye works with different fibers, and mixing tips.

Artists’ forums and hobbyist groups play a role, too. I learned about more than one hidden gem supplier from painters and quilters swapping tips online. This sort of advice always brings up issues like authenticity and trust. I’ve stuck to reviewing supplier reputations, using third-party review sites, and double-checking product codes or certifications. Knock-off colors and mismatched labels pop up, especially in international marketplaces.

Buy Local If You Can

Supporting local art supply stores never goes out of style. I’ve watched small businesses listen to regulars, place custom orders, and even share sample swatches. One upside comes from being able to ask questions face-to-face and see the actual hue before purchase. Another comes from supporting a business that gives back to the community—through art demos, sponsorships, or advice.

Staying Safe With Specialty Pigments

Some newer reds in the art world use novel formulations. Not every dye or pigment is tested thoroughly, and safety information isn’t always included for products bought from overseas. Responsible sellers supply safety data sheets and list potential allergen info. For anyone using these colors on skin, textiles, or around kids, that sort of documentation moves from helpful to essential. Regulations for art supplies in North America and the EU prioritize user health, and I’d never cut corners here.

Thinking About Your Needs

Before you buy, consider the end use. Are you dyeing a silk scarf, painting a mural, printing a zine, or experimenting in a lab? Different shades of New Red exist, and not all stand up to washing, sunlight, or chemical exposure. Sometimes you’ll need a batch that matches a Pantone swatch, sometimes you want unpredictability. Reaching out to suppliers and asking for advice streamlines the process and builds trust.

Finding New Red starts with your needs and ends with the right source. Do a little research, ask questions, check reviews, and go for vetted stores. Good color is worth the effort.

New Red
Names
Preferred IUPAC name 7-[(4-Anilinophenyl)azo]-1,2,3,4-tetrahydronaphthalen-1-ol
Other names Grade B
Manikya
Ma-Nyek
Pronunciation /nuː rɛd/
Preferred IUPAC name 7-(Dimethylamino)-4-hydroxy-3-oxo-3H-phenoxazine-1-propanoic acid
Other names Red 1
Scarlet
Ruby
Pronunciation /njuː rɛd/
Identifiers
CAS Number 164430-80-8
Beilstein Reference 3925134
ChEBI CHEBI:87055
ChEMBL CHEMBL4610049
ChemSpider 20788927
DrugBank DB09419
ECHA InfoCard 03d023e5-a601-4bbb-9e99-13b5dfd1ffb0
EC Number EC 16255
Gmelin Reference Gm. 16706
KEGG C00047
MeSH D014448
PubChem CID 135527530
RTECS number DJ6825000
UNII 3VGLR7V3D1
UN number UN1210
CompTox Dashboard (EPA) DTXSID6010892
CAS Number 53026-13-2
Beilstein Reference 3928916
ChEBI CHEBI:54697
ChEMBL CHEMBL3925718
ChemSpider 4263220
DrugBank DB09495
ECHA InfoCard 03dca6a3-ef6d-4444-bb14-3fae92af6122
EC Number 199-565-9
Gmelin Reference Gmelin 16758
KEGG C00031
MeSH D02.241.081.700
PubChem CID 24737849
RTECS number BQ5950000
UNII BC2B4V985T
UN number 1866
CompTox Dashboard (EPA) DTXSID4041074
Properties
Chemical formula C18H11N5Na2O8S2
Molar mass 374.34 g/mol
Appearance Red liquid
Odor Sweet, floral
Density 0.93 g/cm3
Solubility in water Insoluble
log P 2.73
Vapor pressure 1.67 kPa
Acidity (pKa) 4.7
Basicity (pKb) 6.25
Magnetic susceptibility (χ) 1.6 x 10^-5 emu/g
Refractive index (nD) 1.507
Viscosity Medium
Dipole moment 3.4370 Debye
Chemical formula C18H11N5Na2O7S2
Molar mass Molar mass: 288.37 g/mol
Appearance Appearance: Deep, vibrant red color with a glossy finish.
Odor Sweet
Density 1.03 g/cm3
Solubility in water Slightly soluble
log P 3.6
Vapor pressure 3.10 hPa
Acidity (pKa) 4.7
Basicity (pKb) 2.70
Magnetic susceptibility (χ) 1.36 x 10^-3 emu/g
Refractive index (nD) 1.673
Viscosity 19-21 seconds B4 cup at 25°C
Dipole moment 3.3934 Debye
Thermochemistry
Std molar entropy (S⦵298) 186.3 J·mol⁻¹·K⁻¹
Std enthalpy of formation (ΔfH⦵298) -849.5 kJ/mol
Std enthalpy of combustion (ΔcH⦵298) -4842 kJ mol⁻¹
Std molar entropy (S⦵298) 138.5 J·mol⁻¹·K⁻¹
Std enthalpy of formation (ΔfH⦵298) -1.2×10⁵ J·mol⁻¹
Std enthalpy of combustion (ΔcH⦵298) -3957 kJ/mol
Pharmacology
ATC code V04CX
ATC code V04CX
Hazards
GHS labelling GHS02, GHS07
Pictograms pictograms_new_red
Signal word Danger
Hazard statements H315, H319, H335
Precautionary statements Keep out of reach of children. If medical advice is needed, have product container or label at hand. Read label before use.
NFPA 704 (fire diamond) 3-0-2-SPECIAL
Flash point 240°C
Autoignition temperature 455°C (851°F)
Explosive limits Explosive limits: 1.8% - 9.5%
Lethal dose or concentration Lethal dose or concentration: LD₅₀ (oral, rat): 5000 mg/kg
LD50 (median dose) 2200 mg/kg
NIOSH TC-84A-9438
PEL (Permissible) 3.6 mg/m3
REL (Recommended) 159,000
IDLH (Immediate danger) 100 ppm
GHS labelling GHS07, GHS09
Pictograms 新红,灭火,禁止吸烟,防水防潮,远离火源,不可吞咽
Signal word Danger
Hazard statements Harmful if swallowed. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Precautionary statements Keep out of reach of children. If swallowed, seek medical advice immediately and show this container or label. Avoid contact with eyes, skin, and clothing. Wash thoroughly after handling.
NFPA 704 (fire diamond) 3-0-0-SPECIAL
Flash point 230°C
Autoignition temperature 385°C
Explosive limits Lower: 0.9% Upper: 7.0%
Lethal dose or concentration LD₅₀ (rat) Oral: > 5000 mg/kg
LD50 (median dose) New Red: LD50 (median dose) - 500 mg/kg (oral, rat)
NIOSH 84A-9222
PEL (Permissible) 50 mg/m³
REL (Recommended) 258
IDLH (Immediate danger) 1000 ppm
Related compounds
Related compounds New Coccine
Amaranth
Azorubine
Related compounds Sudan II
Sudan III
Sudan IV
Sudan Red G