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Basic blue 99 can be used as a pharmaceutical raw material.
Basic Blue 99 (C.I. 56059, CAS 68123-13-7) is a naphthoquinoneimine cationic dye (C₁₉H₂₀BrClN₄O₂, MW 451.75). It is a direct, non-oxidative dye that deposits color without requiring a developer.
Key Applications
Hair dyeing: Direct colorant in temporary/semi-permanent hair dyes and coloring conditioners
Textiles: Dyes acrylic fibers, modified polyester, silk, and wool
Paper & leather: Provides vivid blue shades
Laboratory: Biological stain for microscopy
Key Selling Points
Intense steel-blue color strength at low concentrations
Direct application — no oxidizing agent needed
Strong cationic substantivity to anionic substrates
Versatile blending with other direct dyes
Cost-effective due to high tinctorial strength
Regulatory Note
The EU SCCS (Feb 2026) flagged genotoxicity and sensitization concerns, restricting cosmetic use. Industrial textile/paper applications remain viable.
Items | Specifications | Results |
Appearance | Blue Powder | Complies |
Solubility in water | Soluble | Soluble |
Maximum Absorption | 574nm±3 | 574.681 |
Absorbance(20ppm) | ＞0.35 | 0.399 |
PH Value | 2.00-5.00 | 4.15 |
Conductivity | ＞3ms/cm | 3.09 |
△E | ＜1.5 | 1.2 |
Storage Conditions | Room temperature storage. Store in ventilated,dry place and store in an airtight container. | |
Conclusion | The product conforms to the above specifications. | |
Welcome to inquire us to get the complete COA
| Product parameters | |
| Cas number: | 68123-13-7 |
| Appearance: | Blue powder |
| Purity: | 99%min |
| Package details: | 10kg/package |
| Brand: | Fortunachem |
Uses:
Basic Blue 99 — Comprehensive Overview (Dyes Grade)
What is Basic Blue 99?
Basic Blue 99 (C.I. 56059, CAS No. 68123-13-7, EC No. 268-544-3) is a naphthoquinoneimine cationic dye belonging to the basic dye class. It is a quaternary ammonium compound with the following chemical identity:
Chemical Name: 3-[(4-amino-6-bromo-5,8-dihydro-1-hydroxy-8-imino-5-oxo-2-naphthalenyl)amino]-N,N,N-trimethylanilinium chloride
Molecular Formula: C₁₉H₂₀BrClN₄O₂
Molecular Weight: 451.75
Appearance: Brown-to-black solid powder (in concentrated form); yields an intense blue hue when dissolved or applied
Water Solubility: ~1.37 g/L
Melting Point: 300–320 °C (with decomposition >200 °C)
LogP: −0.88 (hydrophilic)
Density: 2.19 g/cm³
It is a direct, non-oxidative dye, meaning it deposits color directly onto substrates without requiring a developer or oxidizing agent (such as hydrogen peroxide).
Commercial-grade Basic Blue 99 is typically a formulated mixture containing approximately 60–70% chromophore (color-bearing component), ~20% sucrose/sugar, ~7–12% inorganic salts (ZnCl₂, NaCl), and ~2–4% moisture/volatiles. The chromophore fraction consists mainly of brominated 4,8-diamino-6-(3-trimethylammonio)-phenylamino-1,5-naphthoquinone isomers.
Core Applications
Hair Dyeing & Cosmetics (Primary Use)
Direct hair colorant in temporary and semi-permanent hair dye formulations
Used in hair coloring conditioners, hair setting products, hair coloring shampoos, and hair care emulsions
Typical usage concentration: 0.004%–2% in finished cosmetic products
Imparts an intense steel-blue shade; commonly blended with other direct dyes (e.g., Basic Brown 16, Basic Brown 17) to achieve a range of fashion colors
Textile & Fiber Dyeing
As a cationic (basic) dye, it has strong affinity for negatively charged substrates including:
Acrylic fibers (its primary textile application)
Modified polyester and nylon
Silk and wool (under acidic conditions)
Paper pulp coloring
The quaternary ammonium group provides strong ionic bonding to anionic sites on fibers, yielding good wash-fastness on suitable substrates
Biological & Laboratory Staining
Used as a biological stain for microscopy and histological applications
Its strong blue coloration and cationic nature make it suitable for staining acidic cellular components (e.g., nucleic acids, certain polysaccharides)
Industrial & Specialty Applications
Paper dyeing — provides vivid blue shades in decorative and specialty papers
Ink formulations — used in specialty inks and coatings
Leather dyeing — applicable to chrome-tanned leathers
Wastewater research — frequently used as a model cationic dye in adsorption and bioremediation studies for dye removal from industrial effluents
Selling Points (Dyes Grade)
| Selling Point | Details |
|---|---|
| Intense Color Strength | Delivers a vivid, deep steel-blue shade with high tinctorial strength; effective at very low concentrations (0.004%–2%) |
| Direct Application | Non-oxidative dye — no developer or peroxide needed; simplifies formulation and reduces processing steps |
| Excellent Substantivity | Strong cationic charge ensures high affinity and rapid uptake on anionic substrates (hair keratin, acrylic fibers, paper) |
| Color Stability | Good resistance to fading under normal conditions; provides long-lasting color on hair and fiber substrates |
| Versatile Blending | Compatible with other direct dyes (Basic Browns, Basic Reds) for creating a wide color palette in hair and textile applications |
| Low Dose Efficiency | High molecular extinction coefficient means small quantities achieve target shade depth — cost-effective for manufacturers |
| Water Solubility | Adequate aqueous solubility (~1.37 g/L) allows easy incorporation into water-based formulations without organic co-solvents |
| Established Supply Chain | Globally sourced with multiple manufacturers (China, India, Germany, UK); TSCA-listed in the US |
⚠️ Critical Regulatory & Safety Advisory
Any commercial positioning of Basic Blue 99 must account for the following significant regulatory developments:
EU SCCS Final Opinion (February 2026)
The European Commission's Scientific Committee on Consumer Safety (SCCS) issued its final opinion (SCCS/1683/25) concluding that Basic Blue 99 is NOT SAFE for use in non-oxidative hair dye formulations at 1% concentration, based on:
Potential genotoxicity — evidence of possible DNA damage, meaning carcinogenic potential cannot be fully excluded
Skin sensitization — classified as a skin sensitizer based on batch data and published clinical cases
China Regulatory Status
As of the 2021 edition of China's Cosmetic Safety Technical Specification, Basic Blue 99 is not listed in the approved hair dye ingredient directory, meaning it currently lacks regulatory authorization for cosmetic use in China.
Allergenicity Concerns
Clinical case reports have documented Type I hypersensitivity reactions (contact urticaria, contact anaphylaxis) to Basic Blue 99, particularly in individuals over 50 and those with atopic histories. Patch testing at concentrations as low as 0.1% has yielded positive reactions.
Implications for Dyes Grade Sales
Cosmetic/hair dye markets (EU, China): Basic Blue 99 faces significant regulatory headwinds and potential market restrictions
Industrial textile/paper/leather applications: These non-cosmetic uses are less directly impacted by cosmetic-specific regulations, but general chemical safety obligations (REACH, GHS classification — H318: Causes serious eye damage) still apply
Recommended positioning: For dyes-grade sales, emphasize industrial and non-cosmetic applications (textiles, paper, leather, laboratory staining) where regulatory barriers are lower, while transparently disclosing cosmetic regulatory limitations to customers
Storage & Handling
Store at 2–8 °C, sealed, protected from moisture and light
GHS Signal Word: Danger (H318 — Causes serious eye damage)
Required PPE: protective gloves, eye protection, face protection
Also, if you have any other questions, you can contact us
FAQ From Wuhan Fortuna Chemical Co.,Ltd
Q1: Can I get a sample for free ?
A: For small QTY and low value product, we can provide sample for free exclude shipping cost. For high value sample, we will charge the basic sample cost, but we can refund all the cost if customers place order after sample test.
Q2: How to confirm the product quality before placing orders ?
A: Most of our products confirm to international standards like USP/EP/BP/JP/CP. We will provide COA/TDS/MSDS for customers to confirm the specification before placing order.
Q3: What is the payment you accept?
A: For small and low value order, we accept CreditCard, MaterCard,VISA,Western Union and T/T.For large order, we can do T/T and L/C. Any pay on delivery or pay-after are not available for us.
Q4: What is your shipment way ?
A: For less than 100kg gross weight order will ship with courier like FedEx or UPS, we support customers to place courier orders remotely by their account, we will package the goods well and wait for pick up.For more than 100kg goods, we will transport by Air or Sea according to customers' requirement.
Q5: How long is your after-sales service?
A: We accept customer’s quality complaint in three month after customer received the goods. We provide tech.support for all-life if customer place order from our company.
Q6: How do you treat quality complaint ?
A: We support customer to provide our products to any rightful third party testing organization to test our products according to the COA specification, if the test result is confirm with COA, we will take all the loss for customers.
Name:Wuhan Fortuna Chemical Co.,Ltd
Category:Others
Trade Category: Trading Company
Employees: 11 - 50 People
Address: Room 2015, No.2 Building, Kaixin Mansion No.107
Company Information: Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical and Intermediates, Food and Feed additives, Fine chemicals,Biochemical and Reagent, which is the members of Hubei E-commerce Chamber.
Our company has professional persons who major in chemical R&D and sicentific management, supply fine chemical products with high quality and close service, also supply custom-tailored products according to our clients' requirement.
We have a positive and self-motivated management work team with a common philosophy, caring and commitment through teamwork, our team strive to achieve success in delighting our clients and ourselves.
Since Wuhan Fortuna Chemical Co., Ltd founded, we continuously innovate our products and improve our service, sales network. Hence, we initiate the first sale mode on net in China, which is the retail trade of small package bring along wholesale of diversified management modes. Our products are exported widely to South Korea, Vietnam, Australia, Europe and South America, highly recommended by our clients.We insist on the management creed “Market is our compass, Quality is our life, Credit is our soul”. Clients’ trust is our forward power, their satisfaction is our struggling goal.
Wuhan Fortuna Chemical Co.,Ltd is a professional manufacturer which provide Basic blue 99 with good quality and best price, welcome to contact us to get COA/TDS/MSDS of Basic blue 99.
1. Guaranteed purity;
2. Large quantity in stock;
3. Largest manufacturer;
4. Best service after shipment with email;
5. High quality & competitive price;
Used as a dyestuff.
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